Hot Pressure Welding of Aluminum Alloys.
Abstract
The welding of butt joints in 1100, 6061, 7075 aluminum by the hot pressure welding process with a vacuum atmosphere has been studied. Solid cylinders were welded in a closed die. The tensile strength joint efficiency of 1100 aluminum welds was 100% at a welding temperature of 600 C with 24% weld deformation and also at 500 C and 44%. Alloy 7075 welded at 490 C and with 20-30% deformation exhibited a joint efficiency of 100% in the as-welded condition and 93% in the T6 condition. The tensile elongation of welds was good, except for 7075 aluminum in the T6 condition. This was about 1%, which increased to about 2% after postweld diffusion treatment. Abrasion of the faying surfaces by preweld relative movement of a ringshaped specimen on a flat sheet was of only limited effect in improving weld strength. Joint efficiencies of 100% (based on annealed strengths) were achieved with 1100 and 6061 aluminum, but not with 7075 aluminum. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1976
- Accession Number
- ADA025966
Entities
People
- Guinn E. Metzger
Organizations
- Air Force Research Laboratory