Effect of laser spot offsets on microstructures and mechanical properties of LZ91 and TC4 alloys laser welding joint

Meng Li; Zhengwu Zhu; Qing Liu; Libo Wang

doi:10.1117/12.2690366

17 August 2023 Effect of laser spot offsets on microstructures and mechanical properties of LZ91 and TC4 alloys laser welding joint

Meng Li, Zhengwu Zhu, Qing Liu, Libo Wang

Author Affiliations +

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 1275708 (2023) https://doi.org/10.1117/12.2690366
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

The experimental results of laser welding of dissimilar alloys between Mg-Li and Ti alloy with different LSOs show that the IMC around the interface of LZ91 and TC4 improves the bonding strength of the BMs. When the LSO is -0.2mm, Mg₁₇Al₁₂ in the weld is evenly distributed in the α-Mg and β-Li solid solutions. At this time, the average microhardness and the tensile strength of the weld joint provided acceptable performance, 73.05HV and 124.06MPa, respectively.

Citation Download Citation

Meng Li, Zhengwu Zhu, Qing Liu, and Libo Wang "Effect of laser spot offsets on microstructures and mechanical properties of LZ91 and TC4 alloys laser welding joint", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 1275708 (17 August 2023); https://doi.org/10.1117/12.2690366

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