Paper Title:
Low Cycle Fatigue and Fracture Behavior of Nickel-Base Superalloy CM247LC at 760°C
  Abstract

Low cycle fatigue (LCF) behavior of coarse and fine grained superalloy CM247LC at 760°C has been investigated. Both coarse and fine grained CM247LC showed similar cyclic stress response, however, the fine grained CM247LC specimen exhibited relatively uniform and superior fatigue properties to the coarse grained one. It was found that fatigue crack initiation of the alloy was keen to the applied strain range. Fatigue crack initiated at the surface of the specimen with high strain range (∆εt≥( 0.7%) while the initiation site moved to the internal defects at low strain range (∆εt≤0.6%).

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
561-564
DOI
10.4028/www.scientific.net/MSF.449-452.561
Citation
S. M. Seo, I. S. Kim, C. Y. Jo, "Low Cycle Fatigue and Fracture Behavior of Nickel-Base Superalloy CM247LC at 760°C", Materials Science Forum, Vols. 449-452, pp. 561-564, 2004
Online since
March 2004
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Price
$32.00
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