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| Effect of Solution Treatment Temperature on Microstructure and Tensile Properties of Ti-4Al-6Mo-2V-5Cr-2Zr Alloy |
WANG Shengyuan1, ZHANG Haoyu1, ZHOU Ge1, CHEN Xiaobo2, CHEN Lijia1( ) |
1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
2.School of Engineering, RMIT University, Carlton 3053, Australia |
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Cite this article:
WANG Shengyuan, ZHANG Haoyu, ZHOU Ge, CHEN Xiaobo, CHEN Lijia. Effect of Solution Treatment Temperature on Microstructure and Tensile Properties of Ti-4Al-6Mo-2V-5Cr-2Zr Alloy. Chinese Journal of Materials Research, 2022, 36(12): 893-899.
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Abstract A novel metastable β-Ti alloy (Ti-4Al-6Mo-2V-5Cr-2Zr) was designed, melt and wrought to prepare plates. Then the effect of solution treatment temperature on the microstructure and room temperature tensile properties of the as wrought alloy was investigated. Results show that a large number of α-phase precipitates from the β-matrix and gathers near slip bands when the solution temperature is lower than the phase transition temperature of the alloy. As the solution temperature approaches the phase transition temperature, the quantity of α-phase decreases and a part of the slip bands disappears. When the solution temperature is above the phase transition temperature, the alloy microstructure is composed fully of β-phase, while the slip bands disappear completely. As the solution temperature continues to rise, β-phase grains tend to aggregate and grow up. The alloy presents a good matching of strength and plasticity after solution treatment at 750℃×1 h. The corresponding ultimate tensile strength, yield strength and elongation are 957 MPa, 887 MPa and 11.7%, respectively.
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Received: 26 October 2021
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| Fund: National Natural Science Foundation of China(52104379) |
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