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RESEARCH PAPERS

Biaxial Low Cycle Fatigue of Unaged and Aged 1Cr-1Mo-1/4V Steels at Elevated Temperature

[+] Author and Article Information
M. Sakane, M. Ohnami

Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University, Kyoto, Japan

M. Sawada

Faculty of Science and Engineering, Toyota Motor Co. Ltd., Ritsumeikan University, Kyoto, Japan

J. Eng. Mater. Technol 113(2), 244-253 (Apr 01, 1991) (10 pages) doi:10.1115/1.2903399 History: Received May 17, 1989; Revised June 30, 1990; Online April 29, 2008

Abstract

This paper describes the biaxial low cycle fatigue of unaged and aged 1Cr-1Mo-1/4V rotor steels at 823 K in air. Combined push-pull and reversed torsion tests were carried out on these steels and the biaxial fatigue data were obtained. Aging significantly reduced the hardness of the steel but had no effect on the crack direction in biaxial low cycle fatigue. Aging also had no effect on the data correlation using the biaxial strain parameters, but had a significant effect on the data correlation using the biaxial stress parameters. The change in the effective stress parameter in correlating the biaxial fatigue data due to aging is discussed in connection with the material softening.

Copyright © 1991 by The American Society of Mechanical Engineers
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