열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제36권6호
  • /
  • Pages.389-395
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  • 2023
  • /
  • 1225-1070(pISSN)
  • /
  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
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Mg-Al 및 Mg-Zn 고용체의 진동감쇠능 비교

Comparison of Damping Capacities in Mg-Al and Mg-Zn Solid Solutions

  • 전중환 (한국생산기술연구원 산업소재공정연구부문)
  • Joong-Hwan Jun (Industrial Materials Processing R&D Department, Korea Institute of Industrial Technology)
  • 투고 : 2023.11.06
  • 심사 : 2023.11.16
  • 발행 : 2023.11.30
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초록

Damping capacities of Mg-2.5%Al and Mg-2.5%Zn (in atomic) solid solutions were comparatively investigated in order to clarify the influence of solutionized Al and Zn elements on the damping characteristics of Mg. In this study, solid solutions with similar grain size were obtained by solution treatment at 678 K for different times (24 h for Mg-2.5%Al and 36 h for Mg-2.5%Zn), followed by water quenching at RT. The Mg-2.5%Al and Mg-2.5%Zn solid solutions showed similar damping capacities in the strain-amplitude independent region of 1 × 10-6 ~ 1 × 10-5 and in the strain-amplitude dependent region below 6 × 10-4, over which the Mg-2.5%Zn solid solution possessed better damping capacity than the Mg-2.5%Al solid solution. The damping tendencies depending on strain-amplitude for the two solid solutions were analyzed and discussed in terms of similar length between weak pinning points (solutes) and different solute/dislocation interaction forces in Granato-Lücke model.

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과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2021R1F1A1049912).

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