Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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A study on Weibull Probability Statistics Characteristics for Vickers Hardness of Degraded Stainless Steel

열화된 스테인리스강의 비커스 경도에 대한 와이블 확률 통계 특성에 관한 연구

  • Nam, Ki-Woo (Department of Materials Science and Engineering, Pukyong National University) ;
  • Cho, Sung-Duck (Graduate School, UR Interdisciplinary Program of Mechanical Engineering, Pukyong National University) ;
  • Kim, Seon-Jin (Department of Mechanical Design Engineering, Pukyong National University) ;
  • Ahn, Seok-Hwan (Department of Mechatronics, Jungwon University)
  • 남기우 (부경대학교 재료공학과) ;
  • 조승덕 (부경대학교 학연협동기계공학) ;
  • 김선진 (부경대학교 기계설계공학과) ;
  • 안석환 (중원대학교 메카트로닉스학과)
  • Received : 2017.06.13
  • Accepted : 2017.09.08
  • Published : 2017.10.31
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Abstract

Vickers hardness is an important material in the design and reliability is required. Therefore, these values are very important as the basic data for design, manufacture and development, and the identification of quantitative probability distribution characteristics such as mean and dispersion is a very important parameter in design. In this study, Vickers hardness was measured after artificially heat-treated in the temperature range 753K, where chrome depletion near the grain boundary occurred for three kinds of stainless steels, and the Vickers hardness were evaluated. From the results, Vickers hardness increased with increasing heat treatment temperature. In Weibull distribution for Vickers hardness, the dispersion of STS310S at 813K and 873K was small, and the dispersion of STS316L at 753K, 933K and 993K was small. Also, STS347H exhibited the lowest dispersion at 753K in three kinds of stainless steels. The scale parameter increased with increasing heat treatment temperature in three kinds of stainless steels.

Keywords

References

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