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论文类型：期刊论文

发表时间：2015-01-01

发表刊物：MATERIALS TRANSACTIONS

收录刊物：SCIE、EI、Scopus

卷号：56

期号：8

页面范围：1242-1247

ISSN号：1345-9678

关键字：magnesium alloy; T-joint; laser-TIG hybrid heat source; weldability

摘要：The weldability of magnesium alloy T-joint using laser-TIG hybrid welding heat source with cold filler wire was studied in this paper. The effects of welding parameters (wire feeding angle a, wire feeding speed V-W, welding speed V shielding gas flow rate acts on either of the connect corner Q(C), the distance between filler wire and laser beam D-LW) on weld appearance and penetration were discussed. Results show that high-quality magnesium alloy T-joint can be achieved by adjusting the parameters. Shearing test result indicates that shear strength of the T-joint welded by laser-TIG heat source can be as high as 92.3% of that of base metal.