Research on TIG welding process of high strength titanium alloy

Feng Jing; Fan Limin; Geng Naitao; Yang Liu; Wu Shaojie; Cheng Fangjie

doi:10.7513/j.issn.1004-7638.2021.06.023

Volume 42 Issue 6

Dec. 2021

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Feng Jing, Fan Limin, Geng Naitao, Yang Liu, Wu Shaojie, Cheng Fangjie. Research on TIG welding process of high strength titanium alloy[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(6): 158-163. doi: 10.7513/j.issn.1004-7638.2021.06.023

Citation:

Feng Jing, Fan Limin, Geng Naitao, Yang Liu, Wu Shaojie, Cheng Fangjie. Research on TIG welding process of high strength titanium alloy[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(6): 158-163. doi: 10.7513/j.issn.1004-7638.2021.06.023

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Research on TIG welding process of high strength titanium alloy

doi: 10.7513/j.issn.1004-7638.2021.06.023

1.
School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
2.
Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
3.
Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China
4.
Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, China

Received Date: 2021-08-05
Publish Date: 2021-12-31

Abstract

Abstract

A new type of high strength Ti-V-Mo titanium alloy was used as raw material. Welding test was carried out respectively by TIG automatic wire feeding and manual wire filling. The microstructure, forming, and mechanical properties of the joint were analyzed. The results show that the weld appearance shape is very smooth with no splash and edge defects. The base material has a duplex microstructure with higher content of equiaxed α phase. The grain size of the heat affected zone of Ti-V-Mo titanium alloy is very rough with needlelike α' phase inside the alloy. The grain size of weld area is very bulky, made up of a large number of layer α transitional phase structure and a small amount of needlelike α' phase structure. The tensile strength of the joint by TIG automatic and manual wire filling is 822 MPa and 612 MPa, respectively. And the impact absorbing energy of heat affected zone by TIG automatic and manual wire filling is 72.2 J and 84.9 J respectively. It shows good toughness characteristics in heat affected zone through the TIG welding process.
- high-strength titanium alloy,
- TIG welding,
- manual wire-filled,
- automatic wire-feeding,
- microstructure,
- heat-affected zone

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References(11)

References

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