Friction Stir Welding of Magnesium for Automotive Applications

2005-01-0730

04/11/2005

Event
SAE 2005 World Congress & Exhibition
Authors Abstract
Content
Friction stir welding (FSW) shows significant advantages in the joining of magnesium alloys. In this paper, the feasibility of FSW for several kinds of the automotive magnesium alloys and the dissimilar material joint of magnesium to aluminum alloys were studied. Butt welded magnesium alloys of wrought and die-cast show advantages expected of the FSW process, i.e. good appearance and joint integrity. The 0.2% proof stress and ultimate tensile strength of friction stir welds in AZ31 are almost the same as the annealed parent metal. In any die-cast AZ91D, AM50A and AM60B alloys, the hardness in the stir zone is higher than the base metal. The proof stress and the tensile strength of the AM50A and AM60B joints are almost at the same level as the base metal. In the case of dissimilar material joint, the material mixing is limited and a more mechanical interlocking joint forms. Furthermore, intermetallic phases about 2μm thick are formed so that the ductility of the dissimilar material joint is inferior to those of the parent metal.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-0730
Pages
7
Citation
Okamoto, K., Hunt, F., and Hirano, S., "Friction Stir Welding of Magnesium for Automotive Applications," SAE Technical Paper 2005-01-0730, 2005, https://doi.org/10.4271/2005-01-0730.
Additional Details
Publisher
Published
Apr 11, 2005
Product Code
2005-01-0730
Content Type
Technical Paper
Language
English