Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effects of Heat Treatment on Damping Capacity and Mechanical Properties in as-cast and heat treated Fe-18wt%Mn Martensitic Alloy

Fe-18wt%Mn 마르텐사이트 합금에서 주조상태와 열처리한 상태의 기계적 성질과 진동감쇠능에 관한 연구

  • Baik, S.H. (Research Institute of Measuring Technology, Woojin OSK Corp.) ;
  • Kim, J.C. (Research Institute of Measuring Technology, Woojin OSK Corp.) ;
  • Jee, K.K. (Korea Institute of Science and Technology, Div. of Metals) ;
  • Shin, M.C. (Korea Institute of Science and Technology, Div. of Metals) ;
  • Choi, C.S. (Yonsei University, Department of Metallurgical Engineering)
  • 백승한 ((주)우진 계측기술연구소) ;
  • 김정철 ((주)우진 계측기술연구소) ;
  • 지광구 (한국과학기술연구원 금속연구부) ;
  • 신명철 (한국과학기술연구원 금속연구부) ;
  • 최종술 (연세대학교 공과대학 금속공학과)
  • Published : 1995.09.30
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Abstract

In recent work, we reported that a hot-rolled Fe-18wt%Mn alloy exhibited high damping capacity as well as excellent mechanical properties. It was also proposed that damping capacity of the alloy was proportional to the ${\gamma}/{\varepsilon}$ boundary area. In the present study, the effects of homogenization(12hrs at $1100^{\circ}C$) and solution treatment(1hr at $1050^{\circ}C$ before air cooling) on damping capacity and mechanical properties were investigated for as-cast and heat treated Fe-18wt%Mn alloy. The specimen subjected to both homogenization and solution treatment was found to show superior damping capacity and mechanical properties to the as-cast state due to removal of segregation and increase in ${\gamma}/{\varepsilon}$ boundary area.

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