Accession Number : AD0714086

Title :   The Effects of Strain-Rate and Strain-Rate History on the Mechanical Properties of Several Metals.

Descriptive Note : Summary rept. Aug 68-Apr 69,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Nicholas,Theodore ; Whitmire,Jack N.

Report Date : AUG 1970

Pagination or Media Count : 61

Abstract : Constant and variable strain-rate test data are reported for 1100-0 and 1199-0 aluminum, AISI 1020 steel, and commercially pure 50-A titanium in shear. Torsion tests on thin-walled tubes covering a range in shear strain-rates from 0.0001 to 25/sec. up to 10 percent strain show that pure aluminum shows very little rate sensitivity while steel and titanium are noticeably rate sensitive. Variable rate tests show that subsequent dynamic loading on a statically prestrained specimen causes an increase in the flow stress in steel and a decrease in the flow stress in titanium. (Author)

Descriptors :   (*ALUMINUM ALLOYS, STRAIN(MECHANICS)), (*STEEL, STRAIN(MECHANICS)), (*TITANIUM, STRAIN(MECHANICS)), STRAIN HARDENING

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE