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Anisotropy of Retained Austenite Stability during Transformation to Martensite in a TRIP‐Assisted Steel
Author(s) -
Emadoddin Esmaeil,
Akbarzadeh Abbas,
Petrov Roumen,
Zhao Lie
Publication year - 2013
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201200197
Subject(s) - austenite , martensite , materials science , trip steel , metallurgy , ferrite (magnet) , plasticity , bainite , microstructure , diffusionless transformation , volume fraction , composite material
Retained austenite as a key constituent in final microstructure plays an important role in TRansformation Induced Plasticity (TRIP) steels. The volume fraction, carbon concentration, size, and morphology of this phase are the well‐known parameters which effects on the rate of transformation of retained austenite to martensite and the properties of steel, are studied by many researchers. Of the transformation of retained austenite to martensite under strain in a TRIP steel is studied in this paper. The experimental results show that the transformation rate of retained, austenite with similar characteristics, to martensite in differently processed TRIP steel samples, exhibits an anisotropic behavior. This phenomenon implies a kind of variant selection of martensitic reaction of retained austenite under strain and is explained by ferrite texture developed in steel.