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Metals and Materials International

, Volume 25, Issue 1, pp 135–139 | Cite as

Influence of Gas Nitriding on the Damping Capacity of Fe-17Mn Alloy

  • Seon-Min Choi
  • Ji-Sook Park
  • Kyongjun An
  • Young-Kook LeeEmail author
Article
  • 130 Downloads

Abstract

Fe-17Mn alloy has been attracted as a high damping alloy due to its excellent damping capacity and tensile properties. For its industrial application, it is necessary to improve both wear resistance and anti-oxidation. To solve this problem, gas nitriding was performed at 520 °C for 10 h using cold-rolled specimens. The nitrided specimen revealed a thick nitride layer of ~ 68 μm with ~ 20%Mn and a hardness value of ~ 650 Hv on the matrix of ε martensite and γ austenite without the diffusion layer. The damping capacity of the nitrided specimen was decreased with increasing the thickness ratio of nitride layer to matrix. However, when the thickness ratio was ≤ 1.5%, the damping capacity of the nitrided specimen was similar to that of the nitride-free specimen. This indicates that the wear resistance and anti-oxidation of Fe-17Mn alloy can be improved by a thin nitride layer without the loss of its damping capacity.

Keywords

Fe–Mn alloy Gas nitriding Damping capacity Hardness test Optical microscopy 

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Copyright information

© The Korean Institute of Metals and Materials 2018

Authors and Affiliations

  • Seon-Min Choi
    • 1
  • Ji-Sook Park
    • 1
    • 2
  • Kyongjun An
    • 3
  • Young-Kook Lee
    • 1
    Email author
  1. 1.Department of Materials Science and EngineeringYonsei UniversitySeoulRepublic of Korea
  2. 2.Cold Rolling DepartmentPOSCOGwangyangRepublic of Korea
  3. 3.Heat Treatment GroupKorea Institute of Industrial TechnologyIncheonRepublic of Korea

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