Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of Martensite Morphology on Damping Capacity and Mechanical Property of Fe-Ni-C Alloys

Fe-Ni-C 마르텐사이트 합금에서 마르텐사이트의 형상이 진동감쇠능과 기계적 성질에 미치는 영향

  • Lee, Young-Kook (Department of Metallurgical Engineering, Yonsei University) ;
  • Shin, Han-Chul (Department of Metallurgical Engineering, Yonsei University) ;
  • Choi, Chong-Sool (Department of Metallurgical Engineering, Yonsei University)
  • 이영국 (연세대학교 공과대학 금속공학과) ;
  • 신한철 (연세대학교 공과대학 금속공학과) ;
  • 최종술 (연세대학교 공과대학 금속공학과)
  • Published : 1997.09.30
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Abstract

Effect of martensite morphology on damping capacity and hardness of Fe-Ni-C martensitic alloys were studied. The morphologies of martensite such as lath, butterfly, lenticular and thin plate were prepared by adjusting nickel content and austenite grain size. The hardness increased in order of lath, lenticular, thin plate, butterfly. The damping capacities of the lath and butterfly martensites were higher than those of the other two morphologies, indicating that the dislocation substructure is more effective in the damping capacity than the twin substructure. Especially, the butterfly martensite showed the highest damping capacity among these morphologies because of presence of not tangled but free dislocations in there.

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Acknowledgement

Supported by : 교육부