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RESEARCH PAPERS

A Mathematical Description for the Stress-Strain Behavior of Annealed 2 1/4 Cr-1 Mo Steel

[+] Author and Article Information
R. L. Klueh, T. L. Hebble

Mathematics Research Staff, Metals and Ceramics Div., Oak Ridge National Lab., Oak Ridge, Tenn.

J. Pressure Vessel Technol 98(2), 118-125 (May 01, 1976) (8 pages) doi:10.1115/1.3454348 History: Received June 06, 1975; Online October 25, 2010

Abstract

We have conducted a detailed series of tensile tests on one heat of annealed 2 1/4 Cr-1 Mo steel over the range 25 to 593°C (75 to 1100°F) and at nominal strain rates of 0.4, 0.04, 0.004, and 0.0004/min. To determine an empirical relationship to represent the flow behavior, we fitted the true-stress true-strain data from these tests to several proposed models. The models fit were those proposed by Hollomon, Ludwik, Ludwigson, and Voce. From a comparison of the standard error of estimate, the Voce equation was concluded to be the best mathematical description of the data under most test conditions and the best single representation over the wide range of test conditions.

Copyright © 1976 by ASME
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