Coupling effect of ultrasonic vibration and beam oscillation on FQZ soften inhibition of laser welded Al-Mg alloy joints

•The UV-LBOW was applied on the welding of Al-Mg alloy.•The effect of hybrid energy field on mechanical properties of joints was studied.•The element distribution of Al-Mg alloy welded joint was analyzed.•A high tensile strength of 347 MPa was obtained by the UV-LBOW method. A novel ultrasonic vibra...

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Bibliographic Details
Published inMaterials letters. X Vol. 18; p. 100197
Main Authors Bi, Jiang, Wu, Liukun, Liu, Zeqi, Wang, Haixiang, Li, Qian, Yang, Zhuoyun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2023
Elsevier
Subjects
Aluminum alloy
Laser welding
Melt flow
Microstructure
Soften inhibition
Microstructure
Melt flow
Laser welding
Soften inhibition
Aluminum alloy
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Summary:•The UV-LBOW was applied on the welding of Al-Mg alloy.•The effect of hybrid energy field on mechanical properties of joints was studied.•The element distribution of Al-Mg alloy welded joint was analyzed.•A high tensile strength of 347 MPa was obtained by the UV-LBOW method. A novel ultrasonic vibration assisted laser beam oscillation welding (UV-LBOW) method was developed and applied on the butt-welding of Al-Mg alloy sheets. Due to the synergistic enhancement of the molten pool flow by ultrasound vibration and laser beam oscillation, the microstructure morphology of fusion zone (FZ) was comprised of equiaxed grains. Additionly, a uniform element distribution was generated from the boundary to the center of the FZ. An enhanced tensile strength of 347 MPa and a fraction elongation of 19.0 % were obtained due to the grain refinement and solid solution strengthening effects.
ISSN:2590-1508
2590-1508
DOI:10.1016/j.mlblux.2023.100197