The Effect of Strain Rate and Microstructure on Strength and Ductility of 7075 Aluminum Alloy at 775F and 900F.
Abstract
The strength and ductility of 7075 aluminum alloy under hot-working conditions were explored by testing tensile specimens at 775F and 900F. The strain rates used were 0.4, 0.8, 1.6, and 4.0 in./in./sec. A small range in grain sizes was obtained by heating swaged samples at 900F for up to 144 hr, so larger grains were grown by straining specimens 6%, then heating them at 930F. The results showed increasing strength and decreasing ductility as the strain rate was increased, and decreasing strength with increasing temperature. Strain-rate sensitivity with temperature was experienced. No significant change in strength with grain size was found. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0859716
Entities
People
- Ronald W. Peterson
Organizations
- Air Force Institute of Technology