An Analysis of High Temperature Metal Creep—Part II: A Constitutive Formulation and Verification

[+] Author and Article Information
J. H. Laflen

Structural Materials and Tribology Section, Battelle Columbus Laboratories, Columbus, Ohio 43201

D. C. Stouffer

Department of Engineering Science, University of Cincinnati, Cincinnati, Ohio 45221

J. Eng. Mater. Technol 100(4), 371-380 (Oct 01, 1978) (10 pages) doi:10.1115/1.3443506 History: Received February 08, 1978; Revised June 21, 1978; Online August 17, 2010


A phenomenological development of a constitutive equation is presented for the high temperature viscoplastic flow of a metal. The development rests on a viscoelasticity foundation but incorporates several features of a classical metals theory. The one dimension representation is developed using the creep response, strain rate response, and stress rate response of wrought Udimet 700 at 926.7°C (1700°F). The strain response to several cyclic stress histories is successfully predicted using the model. A three dimensional theory is proposed.

Copyright © 1978 by ASME
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