| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1613028 | Journal of Alloys and Compounds | 2014 | 11 Pages |
Abstract
In this study, cold metal transfer (CMT) spot plug joining of 1Â mm thick Al AA6061-T6 to 1Â mm thick galvanized steel (i.e., Q235) was studied. Welding variables were optimized for a plug weld in the center of a 25Â mm overlap region with aluminum 4043 wire and 100% argon shielding gas. Microstructures and elemental distributions were characterized by scanning electron microscopy with energy dispersive X-ray spectrometer. Mechanical testing of CMT spot plug welded joints was conducted. It was found that it is feasible to join Al AA6061T6-to-galvanized steel by CMT spot plug welding method. The process variables for two joints with Al AA6061T6-to-galvanized mild steel and galvanized mild steel-to-Al AA6061T6 are optimized. The strength of CMT spot welded Al AA6061T6-to-galvanized mild steel is determined primarily by the strength and area of the brazed interface. While, the strength of the galvanized mild steel-to-Al AA6061T6 joint is mainly dependent upon the area of the weld metal.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
R. Cao, Q. Huang, J.H. Chen, Pei-Chung Wang,