期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.07.010
关键词
AISI 201 stainless steel; Cold rolling; Strain-induced martensite; Strain partitioning; Texture
类别
资金
- FAPESP (Brazil) [2013/26506-8]
- CNPq
- Banco Santander
- CNPq [306.050/2013-7, 303.826/2015-0]
Strain partitioning and texture evolution of AISI 201 austenitic stainless steel were investigated upon cold rolling up to a true strain of epsilon = 0.92. epsilon-martensite formation is the main work hardening mechanism at low strains (epsilon = 0.11). With increasing strain, the volume fraction of alpha'-martensite increases with a sigmoidal-like behavior. Remaining untransformed austenite is intensely fragmented by mechanical microtwins. The in-grain mis-orientation increases for all phases up epsilon = 0.51 and then levels off for further strain. Strain partitions evenly between austenite and alpha'-martensite during cold rolling. X-ray texture measurements revealed that austenite develops Goss, Brass and S texture components up to the largest investigated strain. The presence of Brass component at the highest deformation seems to be assisted by mechanical twinning. The texture components of alpha'-martensite belong to the alpha- and gamma-fibers. Texture evolution of epsilon-martensite was followed by electron back scatter diffraction data and results show that texture evolves up to epsilon = 0.51 and remains nearly unchanged at larger strains, similarly as observed for austenite and alpha'-martensite.
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