The Analysis of Energy Distribution Characteristics of Molten Pool in Welding of Aluminum Alloy with Oscillating Laser

Yuewei Ai (), Yachao Yan, Long Yu and Jian Cheng
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Yuewei Ai: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
Yachao Yan: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
Long Yu: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
Jian Cheng: School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China

Sustainability, 2023, vol. 15, issue 8, 1-13

Abstract: The energy distribution in molten pool is highly related to the quality of the weld formation in aluminum alloy welding. The forming defects in the weld are often improved by adjusting the molten pool dynamic behaviors affected by energy distribution. Therefore, the energy distribution characteristics in the molten pool during the welding of aluminum alloy with oscillating laser in the “∞” shaped path are explored in this paper. The pore defects are found to be greatly reduced in welds from the oscillating laser welding of aluminum alloy compared to those from non-oscillating laser welding. The corresponding distribution characteristics of energy in the molten pool of welding with oscillating laser are obtained and analyzed. The dynamic behaviors and forming process of welds under welding conditions of different distribution characteristics of energy in the molten pool are discussed. The obtained results are in good agreement with the experimental results. Therefore, the proposed method can provide the desired energy distribution for stable dynamic behaviors of molten pool to improve welding quality.

Keywords: distribution characteristics; oscillating laser; forming defects; aluminum alloy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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