The Effect of Slow-Constant Strain Rates on the Tensile Properties of Selected Alloys at Room and Elevated Temperatures

[+] Author and Article Information
C. L. Dotson

Vulcan Testing Laboratory, Birmingham, Ala.

J. Eng. Mater. Technol 96(2), 115-122 (Apr 01, 1974) (8 pages) doi:10.1115/1.3443192 History: Received April 05, 1973; Online August 17, 2010


Tensile tests were performed at constant strain rates from 10−2 to 10−5 min−1 on 5454-O and 1100-O aluminum alloys, A515 Grade 70 steel and B166 nickel alloy at room temperature and at elevated-temperature ranges where the design stress basis normally changes from tensile to creep-rupture controlled. The results in general showed that the strength of the alloys decreased at lower strain rates, and the sensitivity to strain rate was greater at elevated temperatures except where metallurgical phenomena such as dynamic strain aging negate the effects of strain rate. At the highest temperature the decrease in strength properties ranged from 11 to 50 percent over the strain rate range for different alloys.

Copyright © 1974 by ASME
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