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Determination of stacking fault energy of austenite in a duplex stainless steel
Author(s) -
Reick Wolfgang,
Pohl Michael,
Padilha Angelo Fernando
Publication year - 1996
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199605486
Subject(s) - stacking fault energy , austenite , materials science , metallurgy , stacking fault , composite material , microstructure , dislocation
A determination of stacking fault energy (SFE) of the austenite phase of a duplex stainless steel, material no. 1.4462, has been carried out using transmission electron microscopy (TEM). Furthermore, cold rolling tests and microstructural analysis have been realized in order to allow a detailed discussion of the obtained SFE‐values. The results of this Investigation indicate that the stacking fault energy of the austenite phase within the duplex stainless steel Is lower than those of single‐phase austenitic stainless steels. This is justified by the chemical composition; mainly by the Cr and Ni alloying contents. Nevertheless, work hardening of the austenite during cold deformation is not as accentuated as expected by the low SFE‐values, because at higher deformation levels the deformation mainly occurs within the ferrite phase.