Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effect of Stress on the Damping Capacity of Damaged Damping Alloy under Fatigue Stress

피로손상된 제진합금의 감쇠능에 미치는 피로 응력의 영향

  • Lee, Myeong-Soo (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Lee, Ye-Na (Dept. of Materials Science and Engineering, Pukyong National University) ;
  • Nam, Ki-Woo (Dept. of Materials Science and Engineering, Pukyong National University) ;
  • Kang, Chang-Yong (Dept. of Metallurgical Engineering, Pukyong National University)
  • 이명수 (부경대학교 금속공학과) ;
  • 이예나 (부경대학교 재료공학과) ;
  • 남기우 (부경대학교 재료공학과) ;
  • 강창룡 (부경대학교 금속공학과)
  • Received : 2018.08.06
  • Accepted : 2018.09.15
  • Published : 2018.10.27
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Abstract

This study investigates the effect of fatigue stress on the damping capacity in a damaged Fe-22Mn-12Cr-3Ni-2Si-4Co damping alloy under fatigue stress. ${\alpha}^{\prime}$ and ${\varepsilon}-martensite$ forms by fatigue stress in the damaged Fe-22Mn-12Cr-3Ni-2Si4-Co damping alloy under fatigue stress. The ${\alpha}^{\prime}$ and ${\varepsilon}-martensite$ forms with the specific direction and surface relief, or they cross each other. With an increasing fatigue stress, the volume fraction of ${\alpha}^{\prime}-martensite$ and ${\varepsilon}-martensite$ increases. With an increasing fatigue stress, the damping capacity increases with an increase in the volume fraction of ${\varepsilon}-martensite$. The increase in the damping capacity in the damaged Fe-22Mn-12Cr-3Ni-2Si-4Co alloy under fatigue stress strongly affects the increase of ${\varepsilon}-martensite$ formed by fatigue stress, but the damping capacity of the damaged Fe-22Mn-12Cr-3Ni-2Si-4Co damping alloy under fatigue stress is strongly controlled by a large amount of ${\alpha}^{\prime}-martensite$.

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References

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