The Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Novel Low-Cost Ti-3Al-5Mo-4Cr-2Zr-1Fe Alloy
Abstract
:1. Introduction
2. Experiment
3. Results and Discussion
3.1. Microstructure of Ti-35421 Alloy
3.1.1. Microstructure of As-Solutionized States
3.1.2. Microstructure of Aged Alloys
3.2. Mechanical Properties of the Alloy after Heat Treatment
3.2.1. Mechanical Properties of Solution-Treated Alloys
3.2.2. Mechanical Properties of Aged Alloys
3.3. Comparison with Ti-B19 Alloy
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Aging Time (h) | Primary α Phase | Secondary α Phase | ||
---|---|---|---|---|
Average Width (μm) | Volume Fraction (%) | Average Width (μm) | Volume Fraction (%) | |
2 | 0.249 ± 0.044 | 14.87 ± 1.57 | 0.0401 ± 0.007 | 28.40 ± 1.01 |
4 | 0.257 ± 0.015 | 15.44 ± 0.99 | 0.0451 ± 0.009 | 29.53 ± 1.48 |
8 | 0.283 ± 0.069 | 16.23 ± 1.19 | 0.0542 ± 0.006 | 30.61 ± 1.40 |
16 | 0.283 ± 0.061 | 16.43 ± 0.86 | 0.0567 ± 0.009 | 31.15 ± 1.73 |
Heat Treatment | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Reduction of Area (%) |
---|---|---|---|---|
760 °C/1 h | 944.8 | 932.3 | 15.5 | 46.0 |
780 °C/1 h | 984.2 | 967.0 | 8.8 | 32.6 |
820 °C/0.5 h | 913.4 | 886.0 | 8.6 | 23.8 |
840 °C/0.5 h | 887.6 | 864.0 | 9.4 | 27.1 |
760 °C/1 h + 500 °C/8 h | 1341.2 | 1268.5 | 6.1 | 19.8 |
760 °C/1 h + 520 °C/8 h | 1268.4 | 1203.2 | 9.5 | 24.3 |
760 °C/1 h + 540 °C/8 h | 1191.7 | 1142.8 | 10.1 | 32.5 |
760 °C/1 h + 560 °C/8 h | 1172.7 | 1135.1 | 11.8 | 30.3 |
780 °C/1 h + 500 °C/8 h | 1459.0 | 1355.5 | 5.2 | 7.5 |
780 °C/1 h + 520 °C/8 h | 1398.7 | 1321.7 | 6.0 | 11.3 |
780 °C/1 h + 540 °C/2 h | 1391.4 | 1318.6 | 5.3 | 14.3 |
780 °C/1 h + 540 °C/4 h | 1369.6 | 1300.1 | 6.4 | 16.7 |
780 °C/1 h + 540 °C/8 h | 1313.4 | 1240.8 | 8.6 | 17.6 |
780 °C/1 h + 540 °C/16 h | 1273.3 | 1216.5 | 7.6 | 18.1 |
780 °C/1 h + 560 °C/8 h | 1228.8 | 1170.6 | 11.2 | 24.0 |
820 °C/0.5 h + 500 °C/8 h | 1561.3 | - | 1.3 | - |
820 °C/0.5 h + 520 °C/8 h | 1541.7 | - | 1.7 | - |
820 °C/0.5 h + 540 °C/8 h | 1487.0 | - | 1.9 | - |
820 °C/0.5 h + 560 °C/8 h | 1402.7 | - | 1.7 | - |
840 °C/0.5 h + 500 °C/8 h | 1571.0 | - | 1.2 | - |
840 °C/0.5 h + 520 °C/8 h | 1520.0 | - | 1.4 | - |
840 °C/0.5 h + 540 °C/8 h | 1496.5 | - | 1.5 | - |
840 °C/0.5 h + 560 °C/8 h | 1418.7 | - | 2.0 | - |
Ti-3Al-5Mo-5V-4Cr-2Zr (Ti-B19) [10] | 1175–1360 | 1120–1325 | 7–10 | 17–32.5 |
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Sun, M.; Li, D.; Guo, Y.; Wang, Y.; Dong, Y.; Dan, Z.; Chang, H. The Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Novel Low-Cost Ti-3Al-5Mo-4Cr-2Zr-1Fe Alloy. Materials 2020, 13, 3798. https://doi.org/10.3390/ma13173798
Sun M, Li D, Guo Y, Wang Y, Dong Y, Dan Z, Chang H. The Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Novel Low-Cost Ti-3Al-5Mo-4Cr-2Zr-1Fe Alloy. Materials. 2020; 13(17):3798. https://doi.org/10.3390/ma13173798
Chicago/Turabian StyleSun, Meng, Dong Li, Yanhua Guo, Ying Wang, Yuecheng Dong, Zhenhua Dan, and Hui Chang. 2020. "The Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Novel Low-Cost Ti-3Al-5Mo-4Cr-2Zr-1Fe Alloy" Materials 13, no. 17: 3798. https://doi.org/10.3390/ma13173798