The influence of welding speed on nanosecond laser welding of AZ31B magnesium alloy and 304 stainless steel

Wu, Zhe; Wan, Jiaqi; Zhang, Yang; Li, Chengwei; Liu, Yulong; Yang, Chunmei

doi:10.1016/j.optlastec.2023.109997

Optics & Laser Technology

2024

DOI: 10.1016/j.optlastec.2023.109997

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The influence of welding speed on nanosecond laser welding of AZ31B magnesium alloy and 304 stainless steel

Zhe Wu,

Jiaqi Wan,

Yang Zhang

et al.

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2024

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Cited by 4 publications

References 40 publications

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Formation and influencing mechanism of the intermetallic compound in the friction stir welding of immiscible AZ31 and SPHC steel using aluminium powder as an additive

Raja,

Yusof,

Muhamad

et al. 2024

Journal of Materials Research and Technology

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Formation and influencing mechanism of the intermetallic compound in the friction stir welding of immiscible AZ31 and SPHC steel using aluminium powder as an additive

Raja,

Yusof,

Muhamad

et al. 2024

Journal of Materials Research and Technology

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Effect of nanosecond pulse laser power on welding interface and mechanical properties of AZ31B Mg/6061 Al

Wu,

Zhang

et al. 2024

Optics & Laser Technology

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Research on the Mechanism of Femtosecond Laser Ablation Concave-Convex Microstructure Transformation

Cao,

Ma,

et al. 2024

Langmuir

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The phenomenon of femtosecond laser ablation of convex structures from the bottom to the top is interesting. In this study, AZ31B magnesium alloy was used as the substrate to analyze the impact of the laser pulse energy and scanning speed on the morphology of concaveconvex microstructures. Subsequently, a unified two-dimensional numerical model incorporating solid, liquid, and gas phases was established, and combined with experimental data, the mechanism and formation process of concave-convex transformation in magnesium alloy under laser ablation were revealed. The results indicate that the transition from concave to convex structures is significantly influenced by the laser scanning speed, whereas the laser pulse energy primarily affects the shape and size of the convex structures. During the ablation process, molten material is expelled and gradually accumulates on both sides of the ablation groove under the action of the recoil pressure. During cooling, the molten material at both ends of the groove merges to form protrusions under the combined effects of internal negative pressure, gravity, and Marangoni forces. Moreover, this method of femtosecond laser ablation for generating convex structures deviates from the traditional single-texture approach to concave structures, potentially broadening the application of laser composite processing surfaces.

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The influence of welding speed on nanosecond laser welding of AZ31B magnesium alloy and 304 stainless steel

Cited by 4 publications

References 40 publications

Formation and influencing mechanism of the intermetallic compound in the friction stir welding of immiscible AZ31 and SPHC steel using aluminium powder as an additive

Formation and influencing mechanism of the intermetallic compound in the friction stir welding of immiscible AZ31 and SPHC steel using aluminium powder as an additive

Effect of nanosecond pulse laser power on welding interface and mechanical properties of AZ31B Mg/6061 Al

Research on the Mechanism of Femtosecond Laser Ablation Concave-Convex Microstructure Transformation

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