Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy
Abstract
:1. Introduction
2. Viscoplastic Self-Consistent Model
3. Experimental Method
4. Results and Analysis
4.1. Deformation Mechanism Opening Amount
4.2. Microstructure
4.3. Texture Evolution
5. Conclusions
- (1)
- An obvious difference in the loading direction leads to the obvious anisotropy of the tensile behavior. The flow stress and yield strength of the T0 sample with a base surface texture perpendicular to the extrusion direction are significantly higher than those of the T45 and T90 samples.
- (2)
- The microstructure results show that the reason for the large difference in the microstructure of different samples is the number of {10–12} tensile twins and {10–11} compression twins, which are mainly caused by the large difference in the loading direction.
- (3)
- Loading direction plays an important role in the texture evolution, particularly influencing the deformation mechanism during the stretching process: owing to the base surface slip and prismatic surface slip of the T0 sample, the {0001} pole figure is basically unchanged in the entire deformation process. In the later stage of deformation of the T45 specimen, the lattice rotation caused by the opening of the compression twins is the main reason for the peak load direction of the (0001) pole figure. The large number of tensile twins of the T90 sample is turned on, reducing the strength and range of the (0001) pole figure in the TD direction, and the c-axes of many crystal grains are turned to a direction perpendicular to the loading axis.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Deformation Mode | τ0/MPa | τ1/MPa | θ0/MPa | θ1/MPa |
---|---|---|---|---|
Basal <a> | 28 | 60 | 185 | 16 |
Prismatic <a> | 85 | 10 | 200 | 250 |
Pyramidal <c + a> | 110 | 15 | 120 | 400 |
Extension twin | 45 | 0 | 150 | 400 |
Compression twin | 210 | 100 | 345 | 400 |
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Li, Y.; Han, T.; Chu, Z.; Xue, C.; Yang, Q.; Zhao, X.; Gao, H. Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy. Crystals 2021, 11, 1193. https://doi.org/10.3390/cryst11101193
Li Y, Han T, Chu Z, Xue C, Yang Q, Zhao X, Gao H. Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy. Crystals. 2021; 11(10):1193. https://doi.org/10.3390/cryst11101193
Chicago/Turabian StyleLi, Yuyu, Tingzhuang Han, Zhibing Chu, Chun Xue, Qianhua Yang, Xiaodong Zhao, and Hong Gao. 2021. "Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy" Crystals 11, no. 10: 1193. https://doi.org/10.3390/cryst11101193