Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature

Zhao Qing; Chang Le; Zheng Yixiang; Song Gaofeng; Ye Youjun; Xie Yi; Tan Xuelong

doi:10.7513/j.issn.1004-7638.2022.05.012

Volume 43 Issue 5

Nov. 2022

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Zhao Qing, Chang Le, Zheng Yixiang, Song Gaofeng, Ye Youjun, Xie Yi, Tan Xuelong. Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 81-89. doi: 10.7513/j.issn.1004-7638.2022.05.012

Citation:

Zhao Qing, Chang Le, Zheng Yixiang, Song Gaofeng, Ye Youjun, Xie Yi, Tan Xuelong. Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 81-89. doi: 10.7513/j.issn.1004-7638.2022.05.012

Citation:

Zhao Qing, Chang Le, Zheng Yixiang, Song Gaofeng, Ye Youjun, Xie Yi, Tan Xuelong. Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 81-89. doi: 10.7513/j.issn.1004-7638.2022.05.012

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Tensile mechanical properties and constitutive model of commercial pure titanium TA2 welded joints at medium-low temperature

doi: 10.7513/j.issn.1004-7638.2022.05.012

1.
Jiangsu Province Special Equipment Safety Supervision Inspection Institute, Nanjing 210036, Jiangsu, China
2.
Nanjing Tech University, Nanjing 211816, Jiangsu, China

Received Date: 2022-05-21
Publish Date: 2022-11-01

Abstract

Abstract

In this paper, tensile tests of commercial pure titanium TA2 welded joints at different temperatures and strain rates were carried out to analyze the effects of temperature and strain rate on the flow stress and strength of the material. The yield strength of TA2 welded joints present a linear relationship with temperature and an exponential relationship with strain rate. The empirical formula between yield stress and temperature and strain rate was established. Based on the constitutive equations of Arrhenius, Johnson-Cook (JC) and Modified Zerili-Armstrong (MZA), the tensile flow stress of commercial pure titanium welded joints at medium-low temperature was predicted. The prediction accuracy of different constitutive models was quantitatively compared with experimental results. It was found that JC model has the lowest prediction accuracy and MZA model has the highest prediction accuracy. Current study provides data support for the application of titanium materials in pressure equipment, and it is useful for the design, manufacturing, fabrication and use of titanium pressure equipment.
- commercial pure titanium TA2,
- welded joint,
- medium-low temperature tension,
- mechanical properties,
- stress strain,
- constitutive model

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References(14)

References

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