Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2015-01-01

Journal: MATERIALS TRANSACTIONS

Included Journals: Scopus、EI、SCIE

Volume: 56

Issue: 8

Page Number: 1242-1247

ISSN: 1345-9678

Key Words: magnesium alloy; T-joint; laser-TIG hybrid heat source; weldability

Abstract: 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.