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Post‐Deformation Microstructure and Texture Characterization of Fe–18Mn–0.6C–1.5Al TWIP Steel
Author(s) -
Peng ChingTun,
Callaghan Mark D.,
Li Huijun
Publication year - 2015
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.201400403
Subject(s) - twip , microstructure , characterization (materials science) , materials science , texture (cosmology) , deformation (meteorology) , metallurgy , composite material , crystal twinning , nanotechnology , computer science , artificial intelligence , image (mathematics)
The superior features of high manganese TWIP steels under deformation are believed to be originated from the induced twinning boundaries acting as barriers, hence impeding the activity of dislocation slips. We investigate the effect of different deformation mechanisms and grain orientation on mechanical twinning in a low stacking fault energy, Fe–18Mn–0.6C–1.5Al TWIP steel, using microstructure characterization by electron back‐scattered diffraction. Samples were deformed at room temperature in tension and in compression with various strain rates at different strains. The microstructure revealed that under the same amount of deformation, the smaller grain size was found and less twinning boundaries were disclosed in compression. Texture measurements showed that grains strongly oriented to <1 1 1> fiber parallel to the tensile axis when subjecting to tensile loading, while in compression, the brass type component was mainly observed.