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Indexed by:会议论文

Date of Publication:2018-01-01

Included Journals:SCIE、CPCI-S

Volume:1

Issue:1

Page Number:94-100

Key Words:Laser-arc hybrid welding; Intermetallic; Welding mode; Magnesium; Aluminum

Abstract:Mg and Al alloys were joined by a laser-arc hybrid welding method with addition of Ni interlayer. The macrostructure and elements distributions of the joints were observed by the SEM and EPMA, and the plasma forms of the laser-arc hybrid welding sources were analyzed by the high speed camera. The results showed that the welding mode in Al fusion zone changed from conductive mode to keyhole mode, the intermetallic in the Al fusion zone increased obviously, which still influence the property of the joints evident. The effect of the laser induced arc was changed with the varying of laser and arc welding parameters, which made influence on the welding mode and reactions in the welding process. The regulation of the hybrid welding sources between the elements reactions was an important factor for the joining of dissimilar metals.