Mécanismes et modélisation multi-échelle de la rupture fragile trans- et inter-granulaire des aciers pour réacteurs à eau sous pression, en lien avec le vieillissement thermique

Antoine Andrieu

Mechanisms and multi-scale modelling of the brittle fracture modifications induced by thermal ageing of a pressurised water reactor steel

Mécanismes et modélisation multi-échelle de la rupture fragile trans- et inter-granulaire des aciers pour réacteurs à eau sous pression, en lien avec le vieillissement thermique

Antoine Andrieu ¹

Abstract : The use of some PWR components at a relatively high temperature generates a drop of their fracture properties. This embrittlement is generally attributed to the segregation of some impurities at grains boundaries. This work aims at correlating the kinetics of this segregation to the embrittlement kinetics through a multi-scale approach, combining thermodynamical and micro-mechanical analysis.

Keywords : Multi-scale modelling Gain boundary Local approach to fracture Low alloyed steel Thermal ageing

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Theses

Domain :

Engineering Sciences [physics] / Other

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https://pastel.archives-ouvertes.fr/pastel-00957868
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Submitted on : Tuesday, March 11, 2014 - 11:19:12 AM
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2013ENMP0046.pdf

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