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RESEARCH PAPERS

Life Estimation of Cracked Stainless Steel Components Under Creep Conditions

[+] Author and Article Information
V. M. Radhakrishnan, M. Kamaraj, V. V. Balasubramaniam

Metallurgical Engineering Department, Indian Institute of Technology, Madras-600036, India

J. Eng. Mater. Technol 113(3), 303-306 (Jul 01, 1991) (4 pages) doi:10.1115/1.2903410 History: Received May 02, 1990; Revised August 08, 1990; Online April 29, 2008

Abstract

Experimental investigations have been carried out to study the creep crack growth in types 316, 308 Cb, and 304 L stainless steel in the temperature range of 873–1073 K under plane stress condition. Testings have been carried out with both the base metal and the welded composite joints, because such joints are commonly used in nuclear power industries. Among the various parameters tried to correlate the creep crack growth, the energy rate line integral has been found to give the best description of the crack growth rate. The steady-state energy rate line integral has been found to correlate well with the rupture time. Based on this observation, life estimations are presented for thin components containing various initial defect sizes.

Copyright © 1991 by The American Society of Mechanical Engineers
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