C. Keul, V. Wirths, and W. Bleck, New bainitic steels for forgings, Archives of Civil and Mechanical Engineering, vol.12, pp.119-125, 2012.

H. Bhadeshia, Bainite in steels : transformations, microstructure and properties, 2000.

Y. Ohmori and T. Maki, Bainitic Transformation in View of Displacive Mechanism, Materials Transactions JIM, vol.32, pp.631-641, 1991.

M. Hillert, The Nature of Bainite, ISIJ International, vol.35, pp.1134-1140, 1995.

H. Aaronson, W. Reynolds, G. Shiflet, and G. Spanos, Bainite Viewed Three Different Way, Metallurgical Transactions A, vol.21, pp.1343-1380, 1990.

B. Bramfitt and J. Speer, A perspective on the morphology of bainite, Metallurgical Transactions A, vol.21, pp.817-829, 1990.

S. Zajac, J. Komenda, P. Morris, P. Dierickx, S. Matera et al., Quantitative structure-property relationships fo complex bainitic microstructures, 2005.

G. Thewlis, Classification and quantification of microstructures in steels, Materials Science and Technology, vol.20, pp.143-160, 2004.

M. Takahashi and H. Bhadeshia, Model for Transition from upper to lower bainite, Materials Science and Technology, vol.6, pp.592-603, 1990.

S. Zajac, V. Schwinn, and K. Tacke, Characterization and quantification of complex bainitic microstructure in high and ultra-high strength linepipe steels, Materials Science Forum, pp.387-394, 2005.

E. Kozeschnik and H. Bhadeshia, Inlfuence of silicon on cementite precipitation in steels, Materials Science and Technology, vol.24, pp.343-347, 2008.

F. Caballero, C. Capdevila, J. Chao, J. Cornide, C. Garcia-mateo et al., Influence of bainite morphology on impact toughness of continuously cooled cementite-free bainitic steels, Materials Science and Technology, vol.28, pp.95-102, 2012.

L. Habraken, Sur la transformation bainitique dans les aciers, vol.53, pp.930-944, 1956.

L. Habraken and M. Economopolus, Transformation and Hardenability in Steels, Climax Molybdenum, 1967.

G. Miyamoto, N. Iwata, N. Takayama, and T. Furuhara, Reconstruction of parent austenite grain structure based on crystal orientation map of bainite with and without ausforming, ISIJ International, vol.7, pp.1174-1178, 2011.

C. Cayron, B. Artaud, and L. Briottet, Reconstruction of parent grains from EBSD data, Materials Characterization, vol.57, pp.386-401, 2006.

L. Germain, N. Gey, R. Mercier, P. Blaineau, and M. Humbert, An advanced approach to reconstructing parent orientation maps in the case of approximate orientation relations: Application to steels, Acta Materialia, vol.60, pp.4551-4562, 2012.

Q. Wang, C. Zhang, W. Xu, S. Zhao, X. Zhao et al., Refinement of Steel Austenite Grain Under an Extremely High Degree of Superheating, Journal of Iron and Steel Research, International, vol.14, pp.161-166, 2007.

T. Wada and G. Eldis, Transformation Characteristic of 2.25Cr-1Mo Steel, Application of 2.25Cr-1Mo Steel for Thick-wall Pressure Vessels, Application of 2 ¼ Cr-1 Mo steel for thick wall pressure vessels, ASTM STP 755, pp.343-362, 1982.

S. Kimmins and D. Gooch, Austenite memory effect in 1Cr-1 Mo-O-75V(Ti, B) steel, Metal Science, vol.17, pp.519-532, 1983.

E. Bain, Alloying element in steels, 1939.

G. Totten and M. Howes, Steel Heat Treatment Handbook, M. Dekker, 1997.

R. Hehemann, K. Kinsman, and H. Aaronson, A Debate on the Bainite Reaction, Metallurgical Transactions, vol.3, pp.1077-1093, 1972.

C. Zener, Kinetics of the decomposition of Austenite, Transactions of the AIME, vol.167, pp.550-583, 1946.

R. Houillier, G. Bégin, and A. Dubé, A study of the peculiarities of austenite during the formation of bainite, Metallurgical Transactions, vol.2, pp.2645-2653, 1971.

H. Bhadeshia and D. Edmonds, Tempered martensite embrittlement: role of retained austenite and cementite, Metal Science, vol.13, pp.325-334, 1979.

M. Hillert, L. Höglund, and J. Agren, Role of carbon and alloying elements in the formation of bainitic ferrite, Metallurgical and Materials Transactions A, vol.35, pp.3693-3700, 2004.

, ASM Handbook, Casting, vol.15, 1991.

J. Duy, M. Strangwood, and C. Davis, Effect of TiN Particles and Grain Size on the Charpy Impact Transition Temperature in Steels, Journal of Materials Science and Technology, vol.28, pp.878-888, 2012.

A. Ghosh, A. Ray, D. Chakrabarti, and C. Davis, Cleavage initiation in steel : Competition between large grains and large particles, Materials Science and Engineering A, vol.561, pp.126-135, 2013.

A. Ghosh, A. Sahoo, M. Ghosh, R. Ghosh, and D. Chakrabarti, Effect of microstructural parameters, microtexture and matrix strain on the Charpy impact properties of low carbon HSLA steel containing MnS inclusions, Materials Science and Engineering, vol.613, pp.37-47, 2014.

J. Gregg and H. Bhadeshia, Ti-rich mineral phases and the nucleation of bainite, Metallurgical and Materials Transactions A, vol.25, pp.1603-1611, 1994.

I. Madariaga and I. Gutierrez, Nucleation of acicular ferrite enhanced by the precipitation of CuS on MnS particles, Scripta Materialia, vol.37, pp.1185-1192, 1997.

C. Ouchi, T. Sampei, and I. Kozasu, The effect of hot rolling condition and chemical composition on the onset temperature of ?-? transformation after hot rolling, Transactions ISIJ, vol.22, pp.214-222, 1982.

M. Cohen and S. Hansen, On the fundamentals of HSLA steels, HSLA Steels : Metallurgy and Applications, Beijing, pp.61-72, 1985.

L. Meyer, F. Heisterkamp, and W. Mueschenborn, Columbium, titanium and vanadium in normalized thermo-mechanically treated and cold rolled steels, pp.153-167, 1977.

R. Priestner and M. S. Biring, Transformation of low-carbon austenite after small plastic strains, Metal Science Journal, vol.7, pp.60-64, 1973.

S. Liu and G. Zhang, The Effect of Mn and Si on the Morphology and Kinetics of the Bainite Transformation in Fe-C-Ti Alloys, Metallurgical Transactions A, vol.21, pp.1509-1515, 1990.

H. Grabke, K. Hennesen, R. Moller, and W. Wei, Effects of manganese on the grain boundary segregation, bulk and grain boundary diffusivity of P in ferrite, Scripta Metallurgica, vol.21, pp.1329-1324, 1987.

N. Usui, K. Sugimoto, E. Nishida, M. Kobayashi, and S. Hashimoto, CAMP-ISIJ, vol.3, pp.2013-2014, 1990.

K. Sugimoto, K. Nakano, S. Song, and T. Kashima, Retained austenite characteristics and stretch-flangeability of high-strength low-alloy TRIP type bainitic sheet steels, ISIJ International, vol.42, pp.450-455, 2002.

P. Manohar and T. Chandra, Continuous cooling transformation behaviour of high strength microalloyed steels for linepipe applications, ISIJ International, vol.38, pp.766-774, 1998.

A. Salak, M. Selecka, and H. Danninger, Machinability of powder metallurgy steels, 2005.

C. Sims and F. Dahle, Effect of aluminium on the properties of medium carbon cast steel, Transactions of the American Foundrymen's Ass, vol.46, pp.65-132, 1938.

K. Oikawa, H. Ohtani, K. Ishida, and T. Nishizawa, The control of the morphology of MnS inclusions in steel during solidification, ISIJ International, vol.35, pp.402-408, 1995.

D. Hilty and J. Farrel, Modification of inclusions by Ca, Iron Steelmaker, vol.2, pp.17-22, 1975.

G. Shiflet, H. Aaronson, and J. Bradley, On the influence of carbide formation upon the growth kinetics of proeutectoid ferrite in Fe-C-X alloys, Metallurgical Transactions A, vol.12, pp.1743-1750, 1981.

V. Ollilainen, W. Kasprzak, and L. Holappa, The effect of silicon, vanadium and nitrogen on the microstructure and hardness of air-cooled medium carbon low alloy steels, Journal of Materials Processing Technology, vol.134, pp.405-412, 2003.

M. Cai, H. Ding, J. Zhang, L. Li, X. Li et al., Transformation behavior of low carbon steels containing two different Si contents, Journal of Iron and Steel Research, International, vol.16, pp.55-60, 2009.

R. Larn and J. Yang, The Effect of Compressive of Austenite on the Bainitic Ferrite Transformation in Fe-Mn-Si-C Steels, vol.278, pp.278-291, 2000.

J. Wang, P. Van-der-wolk, and S. Van-der-zwaag, On the influence of alloying elements on the bainite reaction in low alloy steels during continuous cooling, Journal of Materials Science, vol.35, pp.4393-4404, 2000.

H. Bhadeshia and D. Edmonds, The Bainite Transformation in a Silicon Steel, Metallurgical Transactions A, vol.10, pp.895-907, 1979.

K. Tsuzaki, C. Nakao, and T. Maki, Formation Temperature of Bainitic Ferrite in Si-Containing Steels, Materials Transactions JIM, vol.32, pp.658-666, 1991.

V. Miihkinen and D. Edmonds, Microstructural examination of two experimental highstrength bainitic low-alloy steels containing silicon, Materials Science and Technology, vol.3, pp.422-431, 1987.

A. Zarei-hanzaki, P. Hodgson, and S. Yue, Retained Austenite Characteristics in Thermomechanically Processed Si-Mn Transformation-Induced Plasticity Steels, Metallurgical and Materials Transactions A, vol.28, pp.2405-2414, 1997.

P. Jacques, E. Girault, T. Catlin, N. Geerlofs, T. Kop et al., Bainite transformation of low carbon Mn-Si TRIP-assisted multiphase steels : influence of silicon content on cementite precipitation and austenite retention, Materials Science and Engineering A, pp.475-479, 1999.

Z. Tan, B. Bingzhe, H. Fang, and F. Yang, Effect of Si on the toughness of High Strength Mn-Si-Cr Series Bainitic Steels, Materials Science Forum, pp.213-216, 2005.

T. Suzuki, Y. Ono, G. Miyamoto, and T. Furuhara, Effects of Si and Cr on bainite microstructure of medium carbon steels, ISIJ International, vol.50, pp.1476-1482, 2010.

S. Han, S. Shin, C. Seo, H. Lee, J. Bae et al., Effect of Mo, Cr, and V additions on tensile and charpy impact properties of API X80 pipeline steels, Metallurgical and Materials Transactions A, vol.40, pp.1851-1862, 2009.

S. Honjo and Y. Saito, Numerical simulation of phase separation in Fe-Cr binary and Fe-Cr-Mo ternary alloys with use of the Cahn-Hilliard equation, ISIJ International, vol.40, pp.914-919, 2000.

M. Umemoto, T. Furuhara, and I. Tamura, Effect of austenitizing temperature on the kinetics of bainite reaction at constant austenite grains size in Fe-C and Fe-Ni-C alloys, Acta Metalurgica, vol.34, pp.2235-2245, 1986.

A. Joarder and D. Sarma, Bainite structure in 0.2C-3.6Ni steel, Materials Transactions JIM, vol.32, pp.705-714, 1991.

Y. Im, Y. Oh, B. Lee, J. Hong, and H. Lee, Effect of carbide precipitation on the strength and Charpy impact properties of low carbon Mn-Ni-Mo bainitic steels, Journal of Nuclear Materials, vol.297, pp.138-148, 2001.

T. Nelson, R. Bodnar, and J. Fielding, A critical assessment of ASTM A 508 class 2 steel for pressure vessel applications, Proceedings of the 32nd Mechanical Working and Steel Processing, pp.323-341, 1991.

L. Norstrom and O. Vingsbo, Influence of nickel on toughness and ductile brittle transition in low carbon martensite steels, Metal Science, vol.13, pp.677-684, 1979.

W. Leslie, The physical metallurgy of steels, p.302, 1981.

U. Hildebrandt and W. Dickenscheid, Plasticity and alloy softening in iron-nickelalloys, Acta. Metallurgica, vol.19, pp.49-55, 1971.

V. Sorokin, E. Vorob'eva, M. Gervas'ev, and N. Adamova, Effect of chromium and nickel content on the structure formation over the section of large forgings of Cr-Ni-Mo steels, Metal science and heat treatment, vol.30, pp.661-665, 1988.

H. Jun, J. Kang, D. Seo, K. Kang, and C. Park, Effects of deformation and boron on microstructure and continuous cooling transformation in low carbon HSLA steels, Materials Science and Engineering A, vol.422, pp.157-162, 2006.

M. Djahazi, Influence of boron distribution on precipitation and recrystallization in hot worked austenite, 1989.

M. Ueno and T. Inoue, Distribution of boron at austenite grain boundaries and bainitic transformation in low carbon steels, Transactions of the Iron and Steel Institute of Japan, vol.13, pp.210-217, 1973.

Y. Ohmori and R. Honeycombe, The isothermal transformation of plain carbon austenite, Proceedings of international Conference on the Science and Technology of Iron and Steel, vol.11, pp.1160-1165

J. Fisher, Influence of boron on hardenabilityof steel, Transactions of the AIME, vol.200, pp.1146-1147, 1954.

P. Maitrepierre, D. Thivellier, and R. Tricot, Influence of boron on the decomposition of austenite in low carbon alloyed steels, Metallurgical Transactions A, vol.6, pp.287-301, 1975.

T. Koseki, K. Amano, M. Imanaka, C. Shiga, and S. Ueda, Four transitional stages in hardenability of boron-bearing HSLA steel in direct-quenching process, Physical metallurgy of direct-quenched steels, pp.297-310, 1993.

D. Llewellyn and W. Cook, Metallurgy of boron-treated low-alloy steels, Metals Technology, pp.517-529, 1974.

K. Taylor, Grain-Boundary segregation and precipitation of born in 0.2 percent carbon steels, Metallurgical transactions A, vol.23, pp.107-119, 1992.

K. Zhu, J. Drillet, and M. Gouné, Mechanisms of boron hardenability in low carbon steels, 2007.

B. Serin, Y. Desalos, P. Maitrepierre, and J. Rofes-vernis, Characteristics of transformation and properties of low-carbon steels wity Nb-Bs, Mémoires Scientifiques de la Revue de Métallurgie, vol.75, pp.365-369, 1978.

Y. Jung, H. Ueno, H. Ohtsubo, K. Nakai, and Y. Ohmori, Effect of small amounts of B, Nb and Ti additions on nucleation and growth processes of intermediates transformation products in low carbon 3% Mn steels, ISIJ international, vol.35, pp.1001-1005, 1995.

K. Zhu, C. Oberbillig, C. Musik, D. Loison, and T. Iung, Effect of B and B+Nb on the bainitic transformation in low carbon steels, Materials Science and Engineering A, vol.528, pp.4222-4231, 2011.

T. Hara, H. Asahi, R. Uemori, and H. Tamehiro, Role of Combined Addition of Niobium and Boron and of Molybdenum and Boron on Hardnenability in Low Carbon Steels, ISIJ International, vol.44, pp.1431-1440, 2004.

S. Watanabe and H. Ohtani, Precipitation behavior of boron in high strength steel, Transactions of the Iron and Steel Institute of Japan, vol.23, pp.38-42, 1983.

H. Lin and G. Cheng, Analysis of hardenability effect of boron, Materials Science and Technology, vol.6, pp.724-730, 1990.

T. Baker, The role of zirconium in microalloyed steels, Materials Science and Technology, vol.31, pp.265-294, 2015.

S. Wang, The effect of titanium and nitrogen contents on the austenite grain coarsening temperature, Journal of Materials Science, vol.24, pp.105-109, 1989.

C. Feng, H. Fang, Y. Zheng, and B. Bai, Mn-series low-carbon air-cooled bainitic steel containing niobium of 0.02%, Journal of Iron Steel Research, International, vol.17, pp.53-59, 2010.

M. Thomas and G. , The influence of niobium and Nb(C,N) precipitation on the formation of proeutectoid ferrite in low alloy steels, Solid-Solid Phase Transformations, pp.469-473, 1981.

X. Yuan, Z. Liu, S. Jiao, L. Ma, and G. Wang, The Onset Temperatures of ? to ?-Phase Transformation in Hot Deformed and Non-deformed Nb Micro-alloyed Steels, ISIJ International, vol.46, pp.579-585, 2006.

T. Abe, K. Tsukada, and I. Kozasu, Role of interrupted accelerated cooling and microalloying on weldable HSLA steels, HSLA Steels : Metallurgy and Applications, Beijing, pp.103-112, 1985.

S. Hong, S. Lim, H. Hong, K. Lee, D. Shin et al., Effect of Nb on strain induced ferrite transformation in C-Mn steel, Materials Science and Engineering A, vol.355, pp.241-248, 2003.

P. Manohar, T. Chandra, and C. Killmore, Continuous cooling transformation behaviour of microalloyed steels containing Ti, Nb, Mn and Mo, ISIJ International, vol.36, pp.1486-1493, 1996.

G. Rees, J. Perdrix, T. Maurickx, and H. Bhadeshia, The effect of niobium in solid solution on the transformation kinetics of bainite, Materials Science and Engineering A, vol.194, pp.179-186, 1995.

L. J. Cuddy, The Effect of Microalloy Concentration on the Recrystallization of Austenite during Hot Deformation, Proc. Conf. Thermomechanical Processing of Microalloyed Austenite, pp.129-140, 1981.

R. Barbosa, Conf. Proc. Processing, Microstructure and Properties of HSLA Steels, pp.51-61, 1988.

Y. Cao, F. Xiao, G. Qiao, X. Zhang, and B. Liao, Quantitative research on effects of Nb on hot deformation behaviors of high-Nb microalloyed steels, Materials Science and Engineering A, vol.530, pp.277-284, 2011.

Z. Zhang, Y. Liu, X. Liang, and Y. She, The effect of Nb on recrystallization behavior of Nb micro-alloyed steel, Materials Science and Engineering A, vol.474, pp.254-260, 2008.

C. Miao, G. Zhang, and C. Shang, Effect of Nb content on hot flow stress, dynamic recrystallization and strain accumulation behaviors in low carbon bainitic steel, Materials Science Forum, pp.62-65, 2010.

A. Guo, R. Misra, J. Xu, B. Guo, and S. Jansto, Ultrahigh strength and low yield ratio of nobium-microalloyed 900MPa pipeline steel with nano/ultrafine bainitic lath, Materials Science and Engineering A, vol.527, pp.3886-3892, 2010.

T. Gladman, The effect of inclusions on recrystallisation and grain growth, The Institution of Metallurgist, p.172, 1979.

S. Yuan and G. Liang, Dissolving behaviour of second phase particles in Nb-Ti microalloyed steel, Materials Letters, vol.63, pp.2324-2326, 2009.

J. Cao, Q. Yong, Q. Liu, and X. Sun, Precipitation of MC phase and precipitation strengthening in hot rolled Nb-Mo and Nb-Ti steels, Journal of Materials Science, vol.42, pp.10080-10084, 2007.

H. Yi, L. Du, G. Wang, and X. Liu, Influence of holding time after deformation on bainite transformation in niobium microalloyed steel, Journal of Iron and Steel Research International, vol.14, pp.62-65, 2007.

C. Sellars, Modelling microstructural development during hot rolling, Materials Science and Technology, vol.6, pp.1072-1081, 1990.

H. Zurob, G. Zhu, S. Subramanian, G. Purdy, C. Hutchinson et al., Analysis of Mn Effect on Recrystallization Kinetics in High Nb Steels, pp.123-130, 2005.

C. Hutchinson, H. Zurob, C. Sinclair, and Y. Brechet, The comparative effectiveness of Nb solute and NbC precipitates at impeding grain-boundary motion in Nb steels, Scripta Materialia, vol.59, pp.635-637, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00358444

M. Akben, B. Bacroix, and J. Jonas, Effect of vanadium and molybdenum addition on high temperature recovery, recrystallization and precipitation behavior of niobium based steel, Acta metallurgica, vol.31, pp.161-174, 1983.

M. Akben, I. Weiss, and J. Jonas, Dynamic precipitation and solute hardening in AV microalloyed steel and two Nb steels containing high levels of Mn, Acta Metallurgica, vol.29, pp.111-121, 1981.

S. Kurokawa, J. Ruzzante, A. Hey, and F. Dyment, Diffusion of Nb in Fe and Fe alloys, Metal Science, vol.17, pp.433-438, 1983.

H. Mohrbacher, Combined effects of Nb and B microalloying in molybdenum based ultra low carbon bainitic (ULCB) steels, 6th International Conference on High Strength Low Alloy Steels (HSLA Steels, pp.785-791, 2011.

R. Fostini and F. Schoen, Effects of carbon and austenitic grain size on the hardenability of Mo steels, Transformation and Hardenability of Steels, Climax Molybdenum, pp.195-209, 1967.

S. Wang and P. Kao, The effect of alloying elements on the structure and mechanical properties of ultra low carbon bainitic steels, Journal of Materials Science, vol.28, pp.5169-5175, 1993.

C. Garcia-de-andrés, C. Capdevila, F. Caballero, D. , and S. Martin, Effect of Mo on continuous cooling transformations in two medium carbon forging steels, Journal of Materials Science, vol.36, pp.565-571, 2001.

M. Masimov and N. Kwiaton, A study of Mo-induced bainitic transformation in continously cooled steels by X-ray and electron diffraction, 2009.

Z. Tang and W. Stumpf, The role of molybdenum additions and prior deformation on acicular ferrite formation in microalloyed Nb-Ti low-carbon line-pipe steels, Materials Characterization, vol.59, pp.717-728, 2008.

W. Liu and M. Akben, Softening behavior of two Ti bearing steels during torsional simulation of rolling, Canadian Metallurgical Quarterly, vol.26, pp.145-153, 1987.

C. Chen, H. Yen, F. Kao, W. Li, C. Huang et al., Precipitation hardening of high-strength low-alloy steels by nanometer-sized carbides, Materials Science and Engineering, vol.499, pp.162-166, 2009.

Y. Funakawa, T. Shiozaki, K. Tomita, T. Yamamoto, and E. Maeda, Development of High Strength Hot-rolled Sheet Steel Consisting of Ferrite and Nanometer-sized Carbides, ISIJ International, vol.44, pp.1945-1951, 2004.

J. Jang, Y. Heo, C. Lee, H. Bhadeshia, and D. Suh, Interphase precipitation in Ti-Nb and Ti-Nb-Mo bearing steel, Materials Science and Technology, vol.29, pp.309-313, 2013.

J. Jang, C. Lee, Y. Heo, and D. Suh, and W) carbide in steels using first-principles calculations, Stability of (Ti,M)C (M = Nb, vol.60, pp.208-217, 2012.

C. Garcia-de-andrés, C. Capdevila, D. Martin, and F. Caballero, Effect of the microalloying elements on nucleation of allotriomorphic ferrite in medium C-Mn steels, Journal of Materials Science Letters, vol.20, pp.1135-1137, 2001.

C. Garcia-de-andrés, C. Capdevila, D. Martin, and F. Caballero, Effect of titanium on the allotriomorphic ferrite transformation kinetics in medium carbon-manganese steels, Materials Science and Engineering A, vol.328, pp.156-160, 2002.

M. Korchynsky-;-m.-korchynsky, A. J. Ardo, P. Regas, and G. Tither, Proceedings of the International Conference "Microalloying'95, pp.11-14, 1995.

S. Wang, The effect of titanium and nitrogen contents on the austenite grain coarsening temperature, Journal of Materials Science, vol.24, pp.105-109, 1989.

H. Adrian and F. Pickering, Effect of titanium additions on austenite grain growth kinetics of medium carbon V-Nb steels containing 0,008%-0,018%, Materials Science and Technology, vol.7, pp.176-182, 1991.

B. Mintz, J. Banerjee, and K. Banks, A regression equation for the Ar3 temperature for coarse grained as-cast steels, Ironmaking and Steelmaking, vol.38, pp.197-203, 2011.

B. Garbarz and F. Pickering, Effect of austenite grain boundary mobility on hardenability of steel containing vanadium, Materials Science and Technology, vol.4, pp.967-975, 1988.

S. Lee, J. Park, and Y. Lee, Effect of austenite grain size on the transformation kinetics of upper bainite in a low alloy steel, Scripta Materialia, vol.59, pp.87-90, 2008.

S. Yamamoto, H. Yokoyama, K. Yamada, and N. Niikura, Effects of the austenite grain size and deformation in the unrecrystallized austenite region on bainite transformation behavior and microstructure, ISIJ International, vol.35, pp.1020-1026, 1995.

E. Davenport, R. Grange, and R. Hafsten, Influence of austenite grain size upon isothermal transformation behavior of SAE 4140 steel, Transactions of the AIME, vol.145, pp.301-314, 1941.

K. Winterton, The effect of overheating on the transformation characteristics of a nickel-chromium-molybdenum steel, Journal of the iron and steel institute, vol.151, pp.79-85, 1945.

S. Cottrell and T. Ko, Effect of high temperature heating on the isothermal transformation of bainite, Journal of the iron and steel institute, vol.173, pp.224-228, 1953.

L. Graham and H. Axon, The effect of austenitizing treatment on formation of lower bainite in a plain carbon steels, Journal of the iron and steel institute, vol.191, pp.361-365, 1959.

J. Barford and W. Owen, Effect of the austenite grain size and temperature and the bainite formation, Journal of the iron and steel institute, vol.197, pp.146-151, 1961.

M. Umemoto, K. Horiuchi, and I. Tamura, Transformation kinetics of bainite during isothermal holding and continuous cooling, Transactions of the Iron and Steel Institute of Japan, vol.22, pp.854-861, 1982.

A. Matsuzaki and H. Bhadeshia, Effect of austenite grain size and bainite morphology on overall kinetics of bainite transformation in steels, Materials science and technology, vol.15, pp.518-522, 1999.

H. Yang and H. Bhadeshia, Austenite grain size and the martensite-start temperature, Scripta Materialia, vol.60, pp.493-495, 2009.

M. Zhao, K. Yang, F. Xiao, and Y. Shan, Continuous cooling transformation of undeformed and deformed low carbon pipeline steels, Materials Science and Engineering A, vol.355, pp.126-136, 2003.

X. Liu, J. Solberg, and R. , Measurement of austenite-to-ferrite transformation temperature after multi-pass deformation of steels, Materials Science and Engineering A, vol.194, pp.15-18, 1995.

J. Yang, Q. Liu, D. Sun, and X. Li, Microstructure and transformation characteristics of acicular ferrite in high niobium-bearing microalloyed steel, Journal of Iron and Steel Research International, vol.17, pp.53-59, 2010.

F. Xiao, B. Liao, Y. Shan, G. Qiao, Y. Zhong et al., Challenge of mechanical properties of an acicular ferrite pipeline steel, Materials Science and Engineering A, vol.431, pp.41-52, 2006.

C. Capdevila, J. Ferrer, C. Garcia-mateo, F. Caballero, V. Lopez et al., Influence of Deformation and Molybdenum Content on Acicular Ferrite Formation in Medium Carbon Steels, ISIJ international, vol.46, pp.1093-1100, 2006.

K. Fujiwara, S. Okaguchi, and H. Ohtani, Effect of hot deformation on bainite structure in low carbon steels, ISIJ International, vol.35, pp.1006-1012, 1995.

C. Chiou, J. Yang, and C. Huang, The effect of prior compressive deformation of austenite on toughness property in an ultra-low carbon bainitic steel, Materials Chemistry and Physics, vol.69, pp.113-124, 2001.

X. Jin, N. Min, K. Zheng, and T. Hsu, The effect of austenite deformation on bainite formation in alloyed eutectoid steel, Materials Science and Engineering A, pp.170-172, 2006.

R. Zhang and J. Boyd, Bainite transformation in deformed austenite, Metallurgical and Materials Transactions A, vol.41, pp.1448-1459, 2010.

H. Bhadeshia, Effect of stress and strain on formation of bainite in steels, Hot workability of steels and light alloys-composites, pp.543-556, 1996.

I. Yakubtsov and J. Boyd, Bainite transformation during continuous cooling of low carbon microalloyed steel, Materials Science and Technology, vol.17, pp.296-302, 2001.

J. Philibert, A. Vignes, Y. Bréchet, P. Combrade, and M. , , 2002.

J. Adamczyk and M. Opiela, Influence of the thermo-mechanical treatment parameters on the inhomogeneity of the austenite structure and mechanical properties of the Cr-Mo steel with Nb, Ti, and B microadditions, Journal of Materials Processing and Technology, pp.456-461, 2004.

S. Khan and H. Bhadeshia, The bainite transformation in chemically heterogeneous 300M high strenth steel, Metallurgical Transactions A, vol.21, pp.859-875, 1990.

J. Gautam, A. Miroux, J. Moerman, C. Barbatti, P. Van-liempt et al., Determination of the Non-Recrystallisation Temperature (Tnr) of Austenite in High Strength C-Mn steels, Materials Science Forum, pp.2722-2727, 2012.

F. Siciliano and J. Jonas, Mathematical modeling of the hot strip rolling of microalloyed Nb, multiply-alloyed Cr-Mo, and plain C-Mn steels, Metallurgical and Materials Transactions A, vol.31, pp.511-530, 2000.

J. Dong, F. Siciliano, and J. Jonas, Effect of Silicon on the Kinetics of Nb(C,N) Precipitation during the Hot Working of Nb-bearing steels, ISIJ International, vol.40, pp.613-618, 2000.

K. Irvine, F. Pickering, and T. Gladman, Grain-Refined C-Mn Steels, Journal of the Iron and Steel Institute, vol.205, pp.161-182, 1967.

A. Gorni, Steel forming and heat treating handbook, 2013.

W. Steven and A. Haynes, The Temperature of Formation of Martensite and Bainite in Low Alloy Steels, Journal of the Iron and Steel Institute, pp.349-359, 1956.

A. D. Schino, I. Gutierrez, B. López, E. Alonso, D. Jorge et al., Toughness and ductility improvement in complex microstructure HSS by means of microstructural parameters optimisation, 2010.

D. Das and P. Chattopadhyay, Influence of martensite morphology on the workhardening behavior of high strength ferrite-martensite dual-phase steel, Journal of Materials Science, vol.44, pp.2957-2965, 2009.

F. Caballero, J. Chao, J. Cornide, C. Garcia-mateo, M. Santofimia et al., Toughness deterioration in advanced high strength bainitic steels, Materials Science and Engineering, vol.525, pp.87-95, 2009.

C. Garcia-mateo and F. Caballero, The Role of Retained Austenite on Tensile Properties of Steels with Bainitic Microstructures, Materials Transactions, vol.46, pp.1839-1846, 2005.

S. Lee, S. Lee, and B. De-cooman, Austenite stability of ultrafine-grained transformation-induced plasticity steel with Mn partitioning, Scripta Materialia, vol.65, pp.225-228, 2011.

X. Xiong, B. Chen, M. Huang, J. Wang, and L. Wang, The effect of morphology on the stability of retained austenite in a quenched and partitioned steel, Scripta Materialia, vol.68, pp.321-324, 2013.

S. Zhang and K. Findley, Quantitative assessment of the effects of microstructure on the stability of retained austenite in TRIP steels, Acta Materialia, vol.61, pp.1895-1903, 2013.

F. Ghaith and F. Khan, Three dimensional non-linear finite element modeling of charpy impact test, International Journal of Mechanical Engineering and Technology, vol.4, pp.337-386, 2013.

A. , D. Schino, and C. Guarnaschelli, Effect of microstructure on cleavage resistance of high strength quenched and tempered steels, Materials Letters, vol.63, pp.1968-1972, 2009.

L. Rancel, M. Gomez, S. Medina, and I. Gutierrez, Measurement of bainite packet size and its influence on cleavage fracture in medium carbon bainitic steel, Materials Science and Engineering A, vol.530, pp.21-27, 2011.

H. Bhadeshia, About calculating the characteristic of the martensite-austenite constituent, Proceedings of the International Seminar on welding of high strength pipeline steels, pp.99-106, 2013.

F. Pickering, Transformations and hardenability in steels, Climax Molybdenum, 1967.

R. S. Chandel, R. F. Orr, J. A. Gianetto, J. T. Mcgrath, B. M. Patchett et al., The Microstructure-Mechanical Properties of Narrow Gap Welds in 2.25Cr±1Mo, 1985.

J. P. Naylor and P. R. Krahe, Effet of bainite packet size on toughness, Metallurgical Transactions, vol.5, pp.1699-1701, 1974.

P. Brozzo, G. Buzzichelli, A. Mascanzoni, and M. Mirabile, Microstructure and cleavage resistance of low-carbon bainitic steels, Metal Science, vol.11, pp.123-129, 1977.

Y. Ohmori, H. Ohtani, and T. Kunitake, Tempering of the bainite and the bainite/martensite duplex structure in a low carbon low alloy steel, Metal Science, vol.8, pp.357-366, 1974.

S. Parker, W. J. , I. Gutiérrez, R. Rodriguez, L. Vanderberghe et al., Property models for mixed microstructures, European Commission, 2003.

T. Gladman, D. Dulieu, and I. Mc-ivor, Structure/property relationships in high-strength micro-alloyed steels, pp.32-54, 1977.

F. Pickering, Physical Metallurgy and the Design of Steels, Applied Science Pub, 1978.

A. Iza-mendia and I. Gutierrez, Generalization of the existing relations between microstructure and yield stress from ferrite-pearlite to high strength steels, Materials Science and Engineering, vol.561, pp.40-51, 2013.

I. Gutierrez, A. Altuna, G. Paul, S. Parker, J. Bianchi et al., Mechanical property models for high-strength complex microstructures, 2008.

T. Barry and J. Schmitt, Durcissement des aciers -Mécanismes, Techniques de l'ingenieur, M4340, 2002.

T. Yokoi, M. Takahashi, N. Maruyama, and M. Sugiyama, Application of controlled Cu nano-precipitation for improvement in fatigue properties of steels, Nippon steel technical report, n°91, pp.49-55, 2005.

I. Madariaga, I. Gutierrez, and B. Lopez, Acicular ferrite microstructure and mechanical properties in a medium carbon forging steel, Materials Science Forum, vols, pp.419-426, 1998.

S. Song, J. Wu, D. Wang, L. Weng, and L. Zheng, Stress-induced non-equilibrium grain boundary segregation of phosphorus in a Cr-Mo alloy steel, Materials Science and Engineering A, vol.430, pp.320-325, 2006.

B. Chen, P. Flewitt, and D. Smith, Microstructural sensivity of 316H austenitic stainless steel: Residual stress relaxation and grain boundary fracture, Materials Science and Engineering A, vol.527, pp.7387-7399, 2010.

M. Paju and R. Möller, The effect of boron on phosphorus segregation in austenite, Scripta Metallurgica, vol.18, pp.813-815, 1984.

K. Zhu, O. Bouaziz, C. Oberbillig, and M. Huang, An approach to define the effective lath size controlling yield strength of bainite, Materials Science and Engineering, vol.527, pp.6614-6619, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00523140

J. Morris, Dislocation Plasticity: an overview, Encyclopedia of Materials Science and Technology, 2001.

M. Bush and P. Kelly, Strengthening mechanisms in bainitic steels, Acta Metallurgica, vol.19, pp.1363-1371, 1971.

G. Speich and R. Miller, Structure and properties of dual-phase steels, pp.145-182, 1979.

A. Kumar, S. Singh, and K. Ray, Influence of bainite/martensite-content on the tensile properties of low carbon dual-phase steels, Materials Science and Engineering, vol.474, pp.270-282, 2008.

A. Bag, K. Ray, and E. Dwarakadasa, Influence of Martensite Content and Morphology on Tensile and Impact Properties of High-Martensite Dual-Phase Steels, Metallurgical and Materials Transactions, vol.30, pp.1193-1202, 1999.

C. Lanzillotto and F. B. Pickering, Structure-propertiy relationships in dual-phase steels, Metal Science, vol.16, pp.371-382, 1982.

M. Mazinani, Deformation and fracture behaviour of low-carbon dual-phase steel, 2006.

U. Liedl, S. Traint, and E. Werner, An unexpected feature of the stress-strain diagram of dual-phase steel, Computational Materials Science, vol.25, pp.122-128, 2002.

L. Chang, Bainite Transformations and Novel Bainitic Rail Steels, 1995.

G. F. , Vander Voort, Metallography: Principles and Practice, 1999.

A. K. De, J. G. Speer, and D. K. Matlock, Color Tint-Etching for Multiphase Steels, Advanced Materials & Processes, pp.27-30, 2003.

B. L. Bramfitt and A. O. Benscoter, Metallographer's Guide: Practices and Procedures for Iron and Steels, 2002.

F. S. Lepera, Improved Etching Technique to Emphasize Martensite and Bainite in High-Strength Dua-Phase Steel, Journal of Metals, vol.32, pp.38-39, 1980.

T. Ferreira and W. Rasband, ImageJ User Guide, 2012.

H. Bhadeshia, The lower bainite transformation and the signifiance of carbide precipitation, Acta Metalurgica, vol.28, pp.1103-1114, 1980.

S. Nemecek, Z. Novy, J. Uhlir, J. Janovec, and M. Kusy, Evaluation of retained austenite in high strength steels, New developments on metallurgy and applications of high strength steels, pp.1159-1166, 2008.

P. Jacques, S. Allain, O. Bouaziz, A. De, A. Gourgues et al., On measurement of retained austenite in multiphase TRIP steels -results of blind round robin test involving six different techniques, Materials Science and Technology, vol.25, pp.567-574, 2009.
URL : https://hal.archives-ouvertes.fr/hal-00413810

S. Van-der-zwaag, L. Zhao, S. Kruijver, and J. Sietsma, Thermal and mechanical stability of retained austenite in aluminum-containing multiphase TRIP steels, ISIJ international, vol.42, pp.1565-1570, 2002.

M. Neilson and G. Brockman, The error associated with point counting, American Mineralogist, vol.62, pp.1238-1244, 1977.

M. Bach, N. Broll, A. Cornet, and L. Gaide, Diffraction X en traitements thermiques : dosage de l'austénite résiduelle par diffraction des rayons X, Journal de Physique III, vol.6, pp.887-895, 1996.

J. Drillet and L. Jantzen, Study of the influence of microstructural heroteneities on austenite stability by magnetism and X-ray diffraction, 2005.

L. Jantzen, Mesure de l'austénite résiduelle par sigmamétrie. Application à la détermination de la stabilité de l'austénite, 2000.

C. Garcia-de-andrés, M. Bartolomé, C. Capdevila, D. Martin, F. Caballero et al., Metallographic techniques for the determination of the austenite grain size in medium-carbon microalloyed steels, Materials Characterization, vol.46, pp.389-398, 2001.

C. Garcia-de-andrés, F. Caballero, C. Capdevila, D. , and S. Martin, Reaveling austenite grain boundaries by thermal etching : advantages and disavantages, Materials Characterization, vol.49, pp.121-127, 2003.

M. Humbert, F. Wagner, H. Moustahfid, and C. Esling, Determination of the orientation of the parent beta grain from the orientations of the inherited alpha plates in the phase transformation from bcc to hcp, Journal of Applied Crystallography, vol.28, pp.571-576, 1995.

M. Humbert and N. Gey, The calculation of the parent grain orientation from inherited variants for approximate (bcc-hcp) orientation relations, Journal of Applied Crystallography, vol.35, pp.401-405, 2002.
URL : https://hal.archives-ouvertes.fr/hal-00111699