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Contribution à l’étude de l’amélioration de l’usinabilité des aciers – Analyse des Couches de Transferts Sélectifs (CTS) et caractérisation des conditions d’apparition

Abstract : Steels contain many inclusions essentially composed by manganese, aluminium, silicium, calcium. However the influence of the different inclusions on machinability is poorly quantified. One of our first tasks is to determine precisely the effect of the inclusions on the metal cutting process as well as on the cutting tools. Many research works highlight a solid lubricant provided by the material being machined and spread along the tool-chip interface. This coating is so called Build up Layer.This thesis is devoted to answer some important questions: what is the actual composition of the Build-up Layer? Is it always the same for a tool machining a steel grade? When and where will the Build-up Layer appear? Is it stable?
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  • HAL Id : tel-02612217, version 1

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Jean-Edouard Desaigues. Contribution à l’étude de l’amélioration de l’usinabilité des aciers – Analyse des Couches de Transferts Sélectifs (CTS) et caractérisation des conditions d’apparition. Matériaux et structures en mécanique [physics.class-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2015. Français. ⟨NNT : 2015ENAM0004⟩. ⟨tel-02612217⟩

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