Laser oscillation welding process control of LZ91 magnesium-lithium alloy/TC4 titanium alloys

Libo Wang; Zhengwu Zhu; Qing Liu; Meng Li

doi:10.1117/12.2690252

17 August 2023 Laser oscillation welding process control of LZ91 magnesium-lithium alloy/TC4 titanium alloys

Libo Wang, Zhengwu Zhu, Qing Liu, Meng Li

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 1275709 (2023) https://doi.org/10.1117/12.2690252
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

In this experiment, the LZ91 Mg-Li alloy and TC4 titanium alloy were joined with a thickness of 2 mm by using a fiber laser, which investigated the effect of beam stirring frequency on the microstructure and mechanical properties of welded joints. The results showed that the oscillation of the beam would improve the molten pool stirring driving force and helped the Al element in the base material of TC4 titanium alloy flow to the molten pool, which caused the Mg-Al reinforced phase precipitated at the intersection of LZ91 and TC4 to significantly improve the bond strength of the weld, with the maximum microhardness reached 71.32 HV and the maximum tensile strength reached 153 MPa.

Citation Download Citation

Libo Wang, Zhengwu Zhu, Qing Liu, and Meng Li "Laser oscillation welding process control of LZ91 magnesium-lithium alloy/TC4 titanium alloys", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 1275709 (17 August 2023); https://doi.org/10.1117/12.2690252

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