Title of article :
Crystal plasticity modeling of texture development and hardening in TWIP steels Original Research Article
Author/Authors :
S. Dancette، نويسنده , , L. Delannay، نويسنده , , K. Renard، نويسنده , , M.A. Melchior، نويسنده , , P.J. Jacques، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Pages :
11
From page :
2135
To page :
2145
Abstract :
A new crystal plasticity model for face-centered cubic metals exhibiting deformation twinning is presented and assessed based on a comprehensive and original experimental dataset for twinning-induced plasticity (TWIP) steel. Various scale transition schemes are tested, including a finite-element representation of the polycrystalline aggregate and a simplified Taylor-type modeling of pairwise interactions of adjacent grains. The same constitutive law is used at the grain level, relying on a dislocation-density-based description of work hardening and accounting for the latent hardening due to the presence of twins. At the macroscopic scale, the model provides improved predictions of the development of texture and hardening in uniaxial tension and during rolling. At the grain level, electron backscatter diffraction measurements confirm that the model properly estimates the volume fraction of twins inside individual grains as well as the average disorientation relative to the grain mean lattice orientation.
Keywords :
Crystal plasticity , Multisite model , Finite elements , Twinning , fcc Materials
Journal title :
ACTA Materialia
Serial Year :
2012
Journal title :
ACTA Materialia
Record number :
1146219
Link To Document :
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