Effect of duplex aging on microstructure and mechanical properties of cold-rolled nearly β titanium sheets with high strength

Kang Xudong; Chen Keru; Wang Zhen; Du Zhaoxin; Guo Wenxia

doi:10.7513/j.issn.1004-7638.2023.01.009

Volume 44 Issue 1

Feb. 2023

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Kang Xudong, Chen Keru, Wang Zhen, Du Zhaoxin, Guo Wenxia. Effect of duplex aging on microstructure and mechanical properties of cold-rolled nearly β titanium sheets with high strength[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 44-48. doi: 10.7513/j.issn.1004-7638.2023.01.009

Citation:

Kang Xudong, Chen Keru, Wang Zhen, Du Zhaoxin, Guo Wenxia. Effect of duplex aging on microstructure and mechanical properties of cold-rolled nearly β titanium sheets with high strength[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 44-48. doi: 10.7513/j.issn.1004-7638.2023.01.009

Citation:

Kang Xudong, Chen Keru, Wang Zhen, Du Zhaoxin, Guo Wenxia. Effect of duplex aging on microstructure and mechanical properties of cold-rolled nearly β titanium sheets with high strength[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 44-48. doi: 10.7513/j.issn.1004-7638.2023.01.009

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Effect of duplex aging on microstructure and mechanical properties of cold-rolled nearly β titanium sheets with high strength

doi: 10.7513/j.issn.1004-7638.2023.01.009

College of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, Inner Mongolia, China

Received Date: 2022-10-03
Publish Date: 2023-02-28

Abstract

Abstract

Ti-3.5Al-5Mo-6V-3Cr-2Sn-0.5Fe titanium alloy was subjected to duplex aging heat treatment, and the effect of double-stage aging on the microstructure and properties of high-strength β-titanium alloy was comparatively studied. The aging temperature was 650 ℃+450 ℃. The research results show that the mechanical properties of the alloy are significantly improved by the duplex aging treatment. When pre-aging is at 650 ℃, the matrix first precipitates α phase with a larger size, and the subsequent low temperature re-aging continues to precipitate secondary α phase with a smaller size. Under the combined action of two sizes of α phase, the alloy with the duplex aging obtains excellent mechanical properties with a strength of 1504 MPa and an elongation of about 10.3%.
- high-strength β-titanium alloy,
- cold-rolled sheets,
- duplex aging,
- microstructure,
- α phase,
- mechanical properties

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References(16)

References

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