Nanostructure of a cold drawn tempered martensitic steel

Details Nanostructure of a cold drawn tempered martensitic steel Nanostructure of a cold drawn tempered martensitic steel

2006-06-28

arxiv.org/abs/cond-mat/0606722v1

scripta materialia 54 (2006) p. 1099-1103

Physics

Condensed Matter

Materials Science

12 pages

Scientific paper

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.

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