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1 GPM - Groupe de physique des matériaux

Abstract : The carbon atom distribution in a tempered martensitic steel processed by cold drawing was investigated with a three-dimensional atom probe. Data clearly show that cementite starts to decompose at the early stage of deformation. This indicates that the driving force of cementite decomposition during plastic deformation is not related to a strong increase of the interfacial energy. Carbon atmospheres were also analysed. They probably result from pipe diffusion of carbon atoms along dislocations pined by Fe3C carbides.

Keywords : drawing three-dimensional atom probe martensitic steels carbides nanostructures





Autor: Xavier Sauvage - Xavier Quelennec - Jean-Jacques Malandain - Philippe Pareige -

Fuente: https://hal.archives-ouvertes.fr/



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