Influence of compressive pre-strain on tensile fatigue life in carbon steel S45C

Hirokazu Tamaki, Rumi Kitazawa, Makoto Yoshida, Susumu Horibe

Research output: Contribution to journalArticle

Abstract

For S45C carbon steel with three heat treatments, pulsating tension tests were carried out under controlled stress condition. The effect of compressive pre-strain, Bauschinger effect and controlling factors on fatigue life were examined. The following results were obtained. The decrease of pulsating fatigue life was caused by three factors, i.e. increase of the total plastic strain amplitude, cyclic plastic strain amplitude and cyclic creep rate. The increase of Bauschinger strain led to the increase of the value of the three factors. Then it resulted in shorter fatigue life. In order to examine the cyclic stress conditions to the fatigue life, the stress ratio was defined as the ratio of maximum cyclic stress to yield stress of each material. Bauschinger strain was occurred when the stress ratio was under the threshold for each material. As the result, cyclic plastic strain amplitude and cyclic creep rate were increased and then pulsating fatigue life was reduced.

Original languageEnglish
Pages (from-to)503-508
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume77
Issue number11
DOIs
Publication statusPublished - 2013 Nov 1

Keywords

  • Bauschinger effect
  • Carbon steel
  • Cyclic creep
  • Fatigue life
  • Plastic strain
  • Pre-strain

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Influence of compressive pre-strain on tensile fatigue life in carbon steel S45C'. Together they form a unique fingerprint.

  • Cite this