Accession Number : AD0859716
Title : The Effect of Strain Rate and Microstructure on Strength and Ductility of 7075 Aluminum Alloy at 775F and 900F.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Peterson, Ronald W.
Report Date : JUN 1969
Pagination or Media Count : 53
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)
Descriptors : (*ALUMINUM ALLOYS, HOT WORKING), TENSILE PROPERTIES, DUCTILITY, STRAIN(MECHANICS), MICROSTRUCTURE, GRAIN SIZE, THESES.
Subject Categories : Properties of Metals and Alloys
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE