Micro-Shear Bands and Their Enhancement on High Temperature Strength of Mg-Gd-Y-Zr Alloy
Abstract
:1. Introduction
2. Experimental Procedures
3. Results
3.1. Microstructure
3.2. Mechanical Properties
4. Discussion
5. Conclusions
- The micro-shear bands can effectively hinder dislocation sliding and strengthen the alloy at elevated temperatures. When the temperature is higher than 250 °C, the enhancement effect decreases, which is mainly caused by the activation of grain boundary deformation.
- Due to dislocation-assisted precipitation during tension, the alloy exhibits higher strength at 200 °C than at room temperature.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Samples | σy (MPa) | σu (MPa) | Δ (%) |
---|---|---|---|
AE | 197 | 282 | 29 |
F-7 | 282 | 332 | 15 |
F-12 | 337 | 360 | 14 |
Samples | Temperature (°C) | σy (MPa) | σu (MPa) | Δ (%) |
---|---|---|---|---|
AE-A | 20 | 301 | 430 | 4.7 [10] |
200 | 315 | 377 | 12.0 | |
250 | 233 | 299 | 17.0 | |
300 | 156 | 185 | 40.0 | |
F-12-A | 20 | 386 | 500 | 4.0 |
200 | 402 | 450 | 10.4 | |
250 | 302 | 334 | 20.4 | |
300 | 165 | 198 | 42.0 |
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Xiao, H.; Yang, Z.; Li, J.; Wan, Y. Micro-Shear Bands and Their Enhancement on High Temperature Strength of Mg-Gd-Y-Zr Alloy. Materials 2021, 14, 3262. https://doi.org/10.3390/ma14123262
Xiao H, Yang Z, Li J, Wan Y. Micro-Shear Bands and Their Enhancement on High Temperature Strength of Mg-Gd-Y-Zr Alloy. Materials. 2021; 14(12):3262. https://doi.org/10.3390/ma14123262
Chicago/Turabian StyleXiao, Hongchao, Zhengjiang Yang, Jie Li, and Yingchun Wan. 2021. "Micro-Shear Bands and Their Enhancement on High Temperature Strength of Mg-Gd-Y-Zr Alloy" Materials 14, no. 12: 3262. https://doi.org/10.3390/ma14123262