Effect of solution aging treatment on microstructure and properties of Ti60 alloy

Zhang Tianxin; Yue Ke; Hu Zhaohua; Guo Jie; Geng Naitao

doi:10.7513/j.issn.1004-7638.2022.06.012

Volume 43 Issue 6

Jan. 2023

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Zhang Tianxin, Yue Ke, Hu Zhaohua, Guo Jie, Geng Naitao. Effect of solution aging treatment on microstructure and properties of Ti60 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 78-83. doi: 10.7513/j.issn.1004-7638.2022.06.012

Citation:

Zhang Tianxin, Yue Ke, Hu Zhaohua, Guo Jie, Geng Naitao. Effect of solution aging treatment on microstructure and properties of Ti60 alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 78-83. doi: 10.7513/j.issn.1004-7638.2022.06.012

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Effect of solution aging treatment on microstructure and properties of Ti60 alloy

doi: 10.7513/j.issn.1004-7638.2022.06.012

1.
Vanadium Titanium Research Institute, Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
2.
Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China

Received Date: 2022-05-16
Publish Date: 2023-01-13

Abstract

Abstract

The effect of solution and aging treatment on the microstructure of Ti60 alloy was investigated by optical microscope and scanning electron microscope. Combined with the tensile tests at room temperature and 600 ℃, it is found out the 1/2 height area of forged billet is relatively uniform and suitable for the study of solution aging treatment and subsequent mechanical properties of Ti60 alloy. After solution and aging treatment at 1 035 ℃/2 h/WQ+700 ℃/5 h/AC, the tensile strength of Ti60 alloy at room temperature is 1193 MPa and the elongation is 6.7%. While tested at 600 ℃, the tensile strength is 751 MPa and the elongation is 20.3%. When crack source originates from the center of the sample, and the fracture is uneven, which shows a typical dimple fracture. When the crack source locates on the edge, it diverges explosively and the fracture has obvious tearing edges and smooth surface, which exhibits a typical brittle fracture mode. After long duration heat exposure at 600 ℃, oxidation occurs on the alloy surface, which reduces the thermal stability and plasticity of Ti60 alloy. The long duration stable service performance of Ti60 alloy was investigated at 600 ℃. The tensile strength at room temperature of as-forged Ti60 alloy was 1 064 MPa, and the elongation rate was 9.4%.After solution aging, the tensile strength and elongation of obtained alloy are 1 224 MPa and 4.7%, respectively.
- Ti60 alloy,
- solution aging,
- fracture morphology,
- thermal stability

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References(13)

References

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