Effects of solution and aging temperature on microstructure and properties of as-cast TC18 alloy

Mu Pengwei; Lv Shufeng; Du Zhaoxin

doi:10.7513/j.issn.1004-7638.2023.02.009

Volume 44 Issue 2

Apr. 2023

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Mu Pengwei, Lv Shufeng, Du Zhaoxin. Effects of solution and aging temperature on microstructure and properties of as-cast TC18 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 61-66. doi: 10.7513/j.issn.1004-7638.2023.02.009

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Mu Pengwei, Lv Shufeng, Du Zhaoxin. Effects of solution and aging temperature on microstructure and properties of as-cast TC18 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 61-66. doi: 10.7513/j.issn.1004-7638.2023.02.009

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Effects of solution and aging temperature on microstructure and properties of as-cast TC18 alloy

doi: 10.7513/j.issn.1004-7638.2023.02.009

College of Science, Inner Mongolia University of Technology, Hohhot 010051, Inner Mongolia, China

Received Date: 2022-09-26
Publish Date: 2023-04-30

Abstract

Abstract

Titanium alloys have phase transformation complexity and phase transformation sensitivity, and the influence factors of solution aging process corresponding to microstructure and mechanical properties of high-strength titanium alloys after heat treatment need to be further studied. The TC18 titanium alloy with nominal composition of Ti-5Al-5Mo-5V-1Cr-1Fe was subjected to solution-aging treatment, and the effects of different solution temperatures and aging temperatures on microstructure and mechanical properties were comparatively studied. The research results show that the solution-aging heat treatment method has a significant effect on improving the properties of the alloy. The solution treatment leads to coarsening primary α phase remaining in the alloy matrix, and supersaturated solid solution in other areas. During the subsequent aging process, needle-like secondary alpha phase precipitates in the β matrix s. Combination of the primary and secondary α phases significantly contributes to the improved overall strength of the alloy.
- TC18 titanium alloy,
- solution,
- aging,
- secondary α phase,
- mechanical properties,
- microstructure

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References(16)

References

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