WELDING 2014-T6 AND 2024-T86 ALUMINUM ALLOY SHEET,
Abstract
The objective of the work was to improve the mechanical properties of 2000 series aluminum alloy weldments. Major efforts were directed toward obtaining increased quenching rates and solidification rates in the weld beads and heat-affected zones, and minimization of heat-affected zone width. These effects were sought by preparing welds with minimum practicable energy inputs and, also, by precooling the materials to be welded to extreme subzero temperatures (-250F). The effects of weld bead removal and post-weld natural and artificial aging were also evaluated. Evaluation of the weldments was based primarily on the results of tensile and bulge tests. It was found that high joint efficiencies (about 90 percent) could be obtained in 2014-T6/4145 (base metal/filler metal) and 2024-T86/4145 weldments with minimal energy inputs, both with or without the use of coolants. Bead (reinforcement) removal had unfavorable effects on the mechanical properties of weldments. Artificial aging improved tensile, yield, and bulge strengths of weldments. There were slight losses in ductility of some portions of the weld composite, however, when artificial aging was performed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1965
- Accession Number
- AD0615735
Entities
People
- David E. Schillinger