Research on the microstructure and properties of titanium alloy weld metal by laser-arc hybrid welding with different filler wires

ZOU Shengguang; HE Mingtao; WANG Dafeng; JIANG Tong; ZHOU Honggang; ZHANG Wenzhi; HE Yifan

doi:10.7513/j.issn.1004-7638.2025.04.008

Volume 46 Issue 4

Aug. 2025

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ZOU Shengguang, HE Mingtao, WANG Dafeng, JIANG Tong, ZHOU Honggang, ZHANG Wenzhi, HE Yifan. Research on the microstructure and properties of titanium alloy weld metal by laser-arc hybrid welding with different filler wires[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 59-65. doi: 10.7513/j.issn.1004-7638.2025.04.008

Citation:

ZOU Shengguang, HE Mingtao, WANG Dafeng, JIANG Tong, ZHOU Honggang, ZHANG Wenzhi, HE Yifan. Research on the microstructure and properties of titanium alloy weld metal by laser-arc hybrid welding with different filler wires[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 59-65. doi: 10.7513/j.issn.1004-7638.2025.04.008

Citation:

ZOU Shengguang, HE Mingtao, WANG Dafeng, JIANG Tong, ZHOU Honggang, ZHANG Wenzhi, HE Yifan. Research on the microstructure and properties of titanium alloy weld metal by laser-arc hybrid welding with different filler wires[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 59-65. doi: 10.7513/j.issn.1004-7638.2025.04.008

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Research on the microstructure and properties of titanium alloy weld metal by laser-arc hybrid welding with different filler wires

doi: 10.7513/j.issn.1004-7638.2025.04.008

1.
Jiangsu University of Technology, Changzhou 213001, Jiangsu, China
2.
Ningbo Branch of China Ordnance Research Institute, Ningbo 315103, Zhejiang, China
3.
Jianglu Machinery & Electronics Group Co., Ltd., Xiangtan 411100, Hunan, China

More Information

Received Date: 2024-09-30
Available Online: 2025-08-31
Publish Date: 2025-08-31

Abstract

Abstract

To elucidate the evolution mechanism of the microstructure and properties of the titanium alloy during the welding process, deposited metal was prepared by oscillating laser-MIG hybrid welding with Ti-6Al-4V and Ti-4Al-3V-1.5Zr welding wires. Titanium alloy welding metal was characterized by X-ray detection, OM, SEM and EBSD to examine defects, tissue, phase composition, grain size, and fracture morphology. The tensile testing machine, impact testing machine and Vickers hardness instrument were employed to evaluate the strength, impact force, and hardness of the deposited metal. The results indicate that there are no obvious pores and cracks in the oscillating laser-arc hybrid welding titanium alloy. The deposited metal from Ti-6Al-4V wire consists of needle-like α phase and mesh-like β phase, with fine crystal grains averaging approximately 7.96 µm in size. The hardness (HV0.2), tensile strength, and impact absorption energy were measured at 257, 1057 MPa and 41.7 J, respectively. In contract, the deposited metal from Ti-4Al-3V-1.5Zr wire is primarily composed of lamellar α phase, with larger grains averaging 8.96 µm. And this deposited metal exhibits lower hardness and tensile strength but relatively higher impact absorption energy of 49.6 J. These differences are attributed to the melting process of oscillating laser welding, the second-phase enhancement and grain refinement induced by vanadium Ti-6Al-4V.
- titanium alloy welding wires,
- oscillating laser-arc hybrid welding,
- deposited metal,
- microstructure,
- mechanical properties

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References(16)

References

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