Numerical investigating the behaviors of texture transition in polycrystalline pure aluminum during asymmetric accumulative roll-bonding (AARB)
摘要
After accumulative roll-bonding (ARB), shear texture and rolling texture develop at the surface and center of aluminum alloys, respectively, and texture transition between them occurs due to the stacking and rolling in the next cycle. In this report, crystal plasticity modeling of aluminum texture after asymmetric accumulative roll-bonding (AARB), which combines ARB and asymmetric rolling, was performed to investigate the texture transition. After being validated by the experimental observations, the numerically predicted overall textures and through-thickness texture were thoroughly characterized. The behaviors of texture transition between rolling texture and shear texture through the thickness were analyzed and the history of texture evolution in a particular layer after multiple ARB cycles was traced. Finally, the effect of ARB stacking pattern and asymmetric ratios on the behaviors of texture transition was discussed. This study is of help in understanding the behaviors of texture transition and tailoring the texture distribution.
Graphic Abstract