Creep and Plastic Strains Under Side Steps of Tension and Torsion for 304 Stainless Steel at 593°C

[+] Author and Article Information
U. W. Cho

University of Missouri-Columbia, Columbia, Mo. 65211

W. N. Findley

Brown University, Providence, R.I. 02912

J. Appl. Mech 50(3), 580-586 (Sep 01, 1983) (7 pages) doi:10.1115/1.3167094 History: Received January 01, 1982; Revised January 01, 1983; Online July 21, 2009


Results of nonproportional stress changes on creep and plastic strains resulting from abrupt changes in proportion of tension and torsion are reported. Both step-up and step-down changes are included. Constitutive equations based on data for single step creep and recovery tests previously reported are used to describe the test results. A viscous-viscoelastic model with aging effects and modifications for step-down tests predicted the creep behavior reasonably well. The prediction of time-independent plastic strains is also described.

Copyright © 1983 by ASME
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