中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 21 No. 6 June 2011 |
AZ31 magnesium alloy with elasto-plastic self consistent model
（State Key Laboratory of Mechanical System and Vibration, School of Mechanical and
Power Energy Engineering, Shanghai Jiao Tong University, Shanghai 200240, China）
Abstract:To gain a better understanding about texture evolution during rolling process of AZ31 alloy, polycrystalline plasticity model was implemented into the explicit FE package, ABAQUS/Explicit by writing a user subroutine VUMAT. For each individual grain in the polycrystalline aggregate, the rate dependent model was adopted to calculate the plastic shear strain increment in combination with the Voce hardening law to describe the hardening response, the lattice reorientation caused by slip and twinning were calculated separately due to their different mechanisms. The elasto-plastic self consistent (EPSC) model was employed to relate the response of individual grain to the response of the polycrystalline aggregate. Rolling processes of AZ31 sheet and as-cast AZ31 alloy were simulated respectively. The predicted texture distributions are in qualitative agreement with experimental results.
Key words: AZ31 alloy; texture; rolling process; elasto-plastic self consistent (EPSC) model
