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Low cycle fatigue data evaluation for a high-strength spring steel SCIE SCOPUS

Title
Low cycle fatigue data evaluation for a high-strength spring steel
Authors
Li, DMKim, KWLee, CS
Date Issued
1997-09
Publisher
ELSEVIER SCI LTD
Abstract
In the present investigation, low cycle fatigue (LCF) behavior is studied using the cylindrical smooth specimens under strain-controlled fully-reversed pull-push conditions for a high-strength spring steel heat-treated to different strength levels. During strain cycling the steel exhibits continuous softening independent of the applied strain levels and heat-treatments. Under the circumstances the saturation of the plastic strain energy density per cycle proves to be a valid criterion to determine the stable hysteresis loops for the cyclic stress-strain (CSS) curve formation. The strain-life curve calculated on the basis of the CSS relationship is in good agreement with the experimental counterpart, indicating a fine consistency between data from the CSS approach and from the strain-life approach. Then the LCF properties are discussed with regard to their dependence on the heat-treatments or strength levels of the steel. (C) 1997 Elsevier Science Ltd.
Keywords
low cycle fatigue; high-strength steel; cyclic stress-strain correlation; strain-life correlation
URI
https://oasis.postech.ac.kr/handle/2014.oak/20907
DOI
10.1016/S0142-1123(97)00074-1
ISSN
0142-1123
Article Type
Article
Citation
INTERNATIONAL JOURNAL OF FATIGUE, vol. 19, no. 8-9, page. 607 - 612, 1997-09
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