Self‐Consistent Modeling of Texture Evolution in TWIP Steel During Uniaxial Tension

Abstract

X-ray diffraction was used to track the evolution of texture in a fully recrystallized Fe-24Mn-3Al-2Si-1Ni-0.06C TWinning Induced Plasticity steel subjected to uniaxial tensile testing. The bulk texture measurements returned the characteristic double fiber for fcc materials with a relatively stronger k111i fiber and a weaker k100i fiber parallel to the tensile axis. The Visco-Plastic Self-Consistent model was used to simulate the macroscopic stress-strain response as well as to track the evolution of the bulk crystallographic texture by detailing the contribution of slip and twinning when latent hardening effects are excluded or included. The simulations revealed the dominant role of slip and the limited volume effect of twinning on the overall development of the bulk texture. The correlation between the latent hardening effects and the employed grain interaction scheme is highlighted.

Tensile elongation of lean-alloy austenitic stainless steels: Transformation-induced plasticity versus planar glide

“…This is in agreement with observations made for low SFE austenitic steels subjected to tensile straining or wire drawing [31–34]. According to viscoplastic self-consistent crystal plasticity calculations, <111> γ and <001> γ fibres are stable orientations under tensile loading conditions [34,35]. As the EBSD inverse pole figure map in Figure 4(a) shows, the high intensity of the <001> γ fibre is also due to the occurrence of deformation twins in grains oriented close to the <111> γ fibre.…”

“…The higher curvature and the denser packing of such features at 200°C (Figure 3 further indicates that a high density of grains are oriented with their < 111 > γ and < 001 > γ crystal axes parallel to the tensile direction ( < 111 > γ and < 001 > γ fibres, respectively). This is in agreement with observations made for low SFE austenitic steels subjected to tensile straining or wire drawing [31][32][33][34]. According to viscoplastic self-consistent crystal plasticity calculations, < 111 > γ and < 001 > γ fibres are stable orientations under tensile loading conditions [34,35].…”