Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Low-Cycle Fatigue Behavior for Thermally-Aged 304 Stainless Steel

시효영향에 따른 304스테인리스강의저 사이클 피로 거동에 관한 연구

  • Baek, Nam-Ju ;
  • Lee, Sang-Mae (Dept.of Mechanical Engineering, Graduate School of Busan National University) ;
  • Lee, Min-U (Dept.of Mechanical Engineering, Graduate School of Busan National University)
  • 백남주 (부산대학교 생산기계공학과) ;
  • 이상매 (부산대학교 대학원 기계공학과) ;
  • 이민우 (부산대학교 대학원 기계공학과)
  • Published : 1987.03.01
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Abstract

Low Cycle fatigue data through stress controlled and strain controlled tests at room temperature were obtained for solution treated and thermally aged 304 stainless steel. All the tests were conducted with the greguency, 1Hz of stress controlled and the strain rate, 40%/min of strain controlled. The aged specimen had the longer fatigue life at the lower stresses than at the higher stresses. It is shown that the fatigue limit of the aged specimen was a little higher than that of the solution treated specimen. It is considered to be due to the presence of carbide precipitates at grain boundary which depressed the crack propagation. The aged specimen showed the larger alternating stress and the more rapid cyclic work harding than the solution treated specimen. Bauschinger effect of the aged specimen was not pronounced than that of the solution treated specimen.

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