Crystal Plasticity Simulation of Cyclic Behaviors of AZ31B Magnesium Alloys via a Modified Dislocation-Twinning-Detwinning Model

Yingjun Sun; Ke Yue; Chongzhi Lin; Zhe Liu; Xiaochuan Sun; Guoliang Wang; Huamiao Wang

doi:10.3390/ma18010025

Crystal Plasticity Simulation of Cyclic Behaviors of AZ31B Magnesium Alloys via a Modified Dislocation-Twinning-Detwinning Model

Materials (Basel). 2024 Dec 25;18(1):25. doi: 10.3390/ma18010025.

Authors

Yingjun Sun¹, Ke Yue¹, Chongzhi Lin¹, Zhe Liu², Xiaochuan Sun³, Guoliang Wang⁴, Huamiao Wang⁵

Affiliations

¹ Chengdu Institute of Advanced Metallic Material Technology and Industry Co., Ltd., Chengdu 610300, China.
² Guangdong Provincial Key Laboratory of Material Joining and Advanced Manufacturing, China-Ukraine Institute of Welding, Guangdong Academy of Sciences, Guangzhou 510650, China.
³ State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
⁴ Key Laboratory of Solid State Physics and Devices Autonomous Region, School of Physics Science and Technology, Xinjiang University, Urumq 830046, China.
⁵ Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Frontier Science Center of Mechanoinformatics, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200072, China.

PMID: 39795668
DOI: 10.3390/ma18010025

Abstract

In this study, a probabilistic model within the dislotwin constitutive framework of DAMASK (the Düsseldorf Advanced Material Simulation Kit) was established to describe the cyclic loading behaviors of AZ31B magnesium alloys. Considering the detwinning procedure within the twinned region, this newly developed dislocation-twinning-detwinning model was employed to accurately simulate stress-strain behaviors of AZ31B magnesium alloys throughout tension-compression-tension (T-C-T) cycle loading. The investigations revealed that the reduction in yield stress during the reverse loading process was attributed to the active operation of twinning and detwinning modes. Furthermore, the evolution of the twin volume fraction during cycle loading scenarios was quantitatively determined. According to these results, the relative activities of plastic deformation modes during T-C-T loading were further analyzed.

Keywords: crystal plasticity; cycle deformation; detwinning; magnesium; modeling.