Effects of pre-strain on tensile mechanical properties of commercially pure titanium TA2 welded joint

Zhao Qing; Chang Le; Zhou Changyu; Pu Jiang; Zheng Yixiang; Wang Zhicheng; Wang Bumei

doi:10.7513/j.issn.1004-7638.2023.03.010

Volume 44 Issue 3

Jun. 2023

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2023 > 44(3): 68-74

Zhao Qing, Chang Le, Zhou Changyu, Pu Jiang, Zheng Yixiang, Wang Zhicheng, Wang Bumei. Effects of pre-strain on tensile mechanical properties of commercially pure titanium TA2 welded joint[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 68-74. doi: 10.7513/j.issn.1004-7638.2023.03.010

Citation:

Zhao Qing, Chang Le, Zhou Changyu, Pu Jiang, Zheng Yixiang, Wang Zhicheng, Wang Bumei. Effects of pre-strain on tensile mechanical properties of commercially pure titanium TA2 welded joint[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 68-74. doi: 10.7513/j.issn.1004-7638.2023.03.010

Citation:

Zhao Qing, Chang Le, Zhou Changyu, Pu Jiang, Zheng Yixiang, Wang Zhicheng, Wang Bumei. Effects of pre-strain on tensile mechanical properties of commercially pure titanium TA2 welded joint[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 68-74. doi: 10.7513/j.issn.1004-7638.2023.03.010

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Effects of pre-strain on tensile mechanical properties of commercially pure titanium TA2 welded joint

doi: 10.7513/j.issn.1004-7638.2023.03.010

1.
Jiangsu Province Special Equipment Safety Supervision Inspection Institute, Nanjing 210036, Jiangsu, China
2.
College of Mechanical and Power Engineering, Nanjing TECH University, Nanjing 211816, Jiangsu, China

Received Date: 2022-09-12
Publish Date: 2023-06-30

Abstract

Abstract

In this paper, room temperature tensile mechanical properties of commercially pure titanium TA2 welded joint after pre-straining were studied. The results show that stress-strain curves rises and yield strength and tensile strength increase with the degree of pre-strain. With considering effects of pre-strain and strain rate, the empirical expression for the strength of the material after pre-strain was developed. According to Hollomon constitutive equation, the variations of strain rate sensitivity index and strain hardening exponent were analyzed. Meanwhile, the tensile constitutive equation for the pre-strained samples was determined. The observation of fracture surface indicates that the reduction of fracture surface and the size of dimples decreases after pre-straining due to the decrease of elongation of the material.
- TA2,
- welded joint,
- tensile properties,
- pre-strain,
- constitutive equation

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References(14)

References

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