Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of Subzero Treatment on the Mechanical Properties of Cold-Rolled High Manganese Austenitic Stainless Steel

냉간압연한 고 Mn 오스테나이트계 스테인리스강의 기계적 성질에 미치는 서브제로처리의 영향

  • Hwang, T.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Jung, M.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Lee, J.Y. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Lee, H.B. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Kang, C.Y. (Dept. of Metallurgical Engineering, Pukyong National University)
  • 황태현 (부경대학교 금속공학과) ;
  • 정목환 (부경대학교 금속공학과) ;
  • 이종영 (부경대학교 금속공학과) ;
  • 이향백 (부경대학교 금속공학과) ;
  • 강창룡 (부경대학교 금속공학과)
  • Received : 2012.07.09
  • Accepted : 2012.09.07
  • Published : 2012.09.30
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Abstract

The effect of subzero treatment on the mechanical properties of cold rolled high manganese austenitic stainless steel was investagated. ${\alpha}$'-martensite was formed by cold rolling, and it was formed with surface relief and specific direction or crossing each other. The volume fraction of martensite increased by subzero treatment, and it was increased with longer time of subzero treatment and higher temperature of subzero treatment. The hardness and strength increased by subzero treatment, while the elongation decreased. With the increase of volume fraction of martensite, the hardness and strength was increased steeply with proportional relationship, elongation was decreased slowly. The results show that the hardness and strength was strongly controlled by the volume fraction of martensite, and the elongation was affected by transformation behavior of deformation induced martensite in the initial stage of deformation.

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References

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