Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effects of carbon content and Titanium Addition on Damping Capacity in Fe-17wt%Mn Alloy

Fe-17wt%Mn 합금의 진동감쇠능에 미치는 탄소와 티타늄 첨가의 영향

  • 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 : 1996.03.31
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Abstract

Effects of carbon and Ti on damping capacity are investigated in an Fe-17%Mn alloy. The suppressive force of carbon against ${\gamma}{\rightarrow}{\varepsilon}$ transformation increases linearly with an increase in its content, lowering Ms temperature and volume fraction of ${\varepsilon}$ martensite. Carbon deteriorates damping capacity by reducing the interfacial area of damping sources and mobility of the boundaries contributing to anelastic deformation. The reduction in damping capacity is accelerated when carbon-containing alloy is aged at higher temperatures above room temperature. The effect of Ti on damping capacity is found to be benificial in carbon-containing alloy, which is attributed to the depletion of carbon solute due to the formation of TiC.

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