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RESEARCH PAPERS

High Strain Rate Tensile Properties of Annealed 2 1/4 Cr-1 Mo Steel

[+] Author and Article Information
R. L. Klueh

Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn.

R. E. Oakes

Development Division, Union Carbide Nuclear Division, Oak Ridge, Tenn.

J. Eng. Mater. Technol 98(4), 361-368 (Oct 01, 1976) (8 pages) doi:10.1115/1.3443390 History: Received April 30, 1975; Revised September 08, 1975; Online August 17, 2010

Abstract

The high strain rate tensile properties of annealed 2 1/4 Cr-1 Mo steel were determined and the tensile behavior from 25 to 566°C and strain rates of 2.67 × 10−6 to 144/s were described. Above 0.1/s at 25°C, both the yield stress and the ultimate tensile strength increased rapidly with increasing strain rate. As the temperature was increased, a dynamic strain aging peak appeared in the ultimate tensile strength-temperature curves. The peak height was a maximum at about 350°C and 2.67 × 10−6 /s. With increasing strain rate, a peak of decreased height occurred at progressively higher temperatures. The major effect of strain rate on ductility occurred at elevated temperatures, where a decrease in strain rate caused an increase in total elongation and reduction in area.

Copyright © 1976 by ASME
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