Misorientation-Dependent Twinning Induced Hardening and Texture Evolution of TWIP Steel Sheet in Plastic Deformation Process

Abstract

Abstract:The quantitative contribution of twinning to hardening behavior and its effect on crystal orientation need to be explored in greater depth for design and forming of twinning-induced-plasticity (TWIP) steel products. To address this issue, the characteristics of twinning formation in the plastic deformation of Fe-30Mn-3Si-2Al TWIP steel are investigated in terms of intergranular misorientation distribution using electron back-scattering diffraction (EBSD), which reveals that most deformation twins adhere to the high-angle grain boundaries (HAGBs) of the face-center-cube (FCC) type TWIP steel. Texture measurements are conducted to show a stable volume fraction of major components including Goss, S and A orientations, while Copper shifts towards Brass orientation. A crystal plasticity finite element (CPFE) model based on virtual polycrystalline microstructure adopting representative volume element (RVE) is employed to simulate the deformation to reveal the correlation between misorientation-dependent twinning and hardening behavior of TWIP steel. The results demonstrate that the proportion of twinning hardening to overall hardening is larger than slip hardening. The stability of texture evolution is simulated to predict the anisotropy of TWIP steel. This research substantiates the twinning induced hardening and texture evolution in deformation of TWIP steel and thus is essential for accurate prediction of the mechanical behaviors.

Analysis of size dependent earing evolution in micro deep drawing of TWIP steel by using crystal plasticity modeling

“…The final values adopted for a series of material parameters for TWIP steel together with elastic tensors are determined and illustrated in Table 1. The methods for determining the material parameters refer to the study of Guo et al [29]. The detailed analysis of the plastic parameters sensibility has been given in the previous work by Sun et al [30].…”

Simulation and Microstructural Analysis of Twin-Induced Plasticity Steel Cylinder Deep Drawing

“…The texture of grain is formed by the preferred orientation during deformation, so it is of great significance to control the formation of specific texture by changing the processing method, to realize the macro-control performance [ 19 ]. There are few studies on the corresponding texture evolution of TWIP steel and its interactions with twinning [ 20 , 21 ]. Investigations into texture development in TWIP steels have mainly focused on the behavior during cold rolling and uniaxial tensile deformation [ 22 , 23 ].…”