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RESEARCH PAPERS

Prediction of Yield in Ductile Materials Operating at Creep Temperatures

[+] Author and Article Information
G. M. Kurajian, T. Y. Na

Department of Mechanical Engineering, The University of Michigan—Dearborn, Dearborn, Mich.

J. Eng. Power 99(3), 425-428 (Jul 01, 1977) (4 pages) doi:10.1115/1.3446524 History: Received August 04, 1976; Online July 14, 2010

Abstract

Utilizing a thermodynamic approach, this paper provides the designer with formulations and data so that he can obtain or verify, and then employ, the yield strength (or yield point) value he may desire in the design of a particular ductile machine element operating in the creep temperature range. A previous paper by the authors [1] dealt with the prediction of failure of such elements in the range between room temperature and the lower creep temperature. Thus, the present paper in conjunction with [1], and the references in both, is to provide a thermodynamic explanation for failure of such elements operating in elevated temperature environments ranging from room through creep temperatures. Specific applications are taken for three selected categories of steel with good agreement between the theory and experimental data. However, with necessary data, the procedures in this paper, as it was in [1], is expected to be applicable to other ductile metals as well.

Copyright © 1977 by ASME
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