A Constitutive Model for Metals Subjected to Cyclic Creep

[+] Author and Article Information
Z. L. Gong

Monac International Corp., Winnipeg, Manitoba, Canada R3B 1Y6

T. R. Hsu

Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2

J. Eng. Mater. Technol 113(4), 419-424 (Oct 01, 1991) (6 pages) doi:10.1115/1.2904120 History: Received May 14, 1990; Revised January 03, 1991; Online April 29, 2008


This paper presents a constitutive model which can be used to predict creep strains and rupture lives of engineering materials undergoing entire creep process, including primary, secondary, and tertiary stages. The model is constructed on the basis of two evolution rules: (1) the continuum damage evolution, and (2) the evolution of internal stresses. It can be used for materials subjected to either static or cyclic creep loadings. Excellent correlations of computed results from the proposed model and those measured from specimens made of 316L stainless steel and 2024-T4 aluminium alloy were obtained.

Copyright © 1991 by The American Society of Mechanical Engineers
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