Friction Stir Spot Welding of Aluminum and Magnesium Alloy Sheets

2005-01-1255

04/11/2005

Event
SAE 2005 World Congress & Exhibition
Authors Abstract
Content
This paper demonstrates the application of a displacement controlled friction stir spot welding machine in joining 1.5 mm sheets of Al 5754 aluminum and AM60 base materials. Higher fracture loads during overlap shear testing were produced when the projected bonded area immediately adjacent to the keyhole periphery and the energy input during FSW spot welding increased. Partial pull-out of the stir zone occurred in high energy input FSW spot welds with fracture initiating from unbonded regions located on either side of the welded joint.
FSW welding tools contaminated with magnesium had a markedly detrimental effect on the mechanical properties of Al 5754 spot welds. Mg-contamination decreased the energy input and the dimensions of the projected bonded area, and produced regions immediately adjacent to the keyhole periphery in Al 5754 spot welds, which contained brittle intermingled lamellae.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-1255
Pages
10
Citation
Su, P., Gerlich, A., and North, T., "Friction Stir Spot Welding of Aluminum and Magnesium Alloy Sheets," SAE Technical Paper 2005-01-1255, 2005, https://doi.org/10.4271/2005-01-1255.
Additional Details
Publisher
Published
Apr 11, 2005
Product Code
2005-01-1255
Content Type
Technical Paper
Language
English