열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제37권5호
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  • Pages.221-227
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  • 2024
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  • 1225-1070(pISSN)
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  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
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Al 고용 강화가 Mg-Al 합금 고용체의 진동감쇠능에 미치는 영향

Effect of Al Solution Strengthening on Damping Capacities of Mg-Al Alloy Solid Solutions

  • 전중환 (한국생산기술연구원 소재.공급망연구부문)
  • Joong-Hwan Jun (Materials.Supply Chain R&D Department, Korea Institute of Industrial Technology)
  • 투고 : 2024.08.22
  • 심사 : 2024.09.10
  • 발행 : 2024.09.30
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초록

The damping capacities in the strain-amplitude dependent and strain-amplitude independent regions were comparatively investigated for pure Mg and Mg-X%Al solid solutions (X : 1, 2 at%) to clarify the role of Al solute in the damping properties of Mg-Al binary solid solution. In order to rule out the effect of grain size on damping capacity, grain sizes of the samples were adjusted to an almost similar level by changing the heat-treatment or solution treatment times at 683 K (12 h, 24 h and 32 h for pure Mg, Mg-1%Al and Mg-2%Al alloys, respectively). The damping capacities of the heat-treated pure Mg and Mg-X%Al solid solutions exhibited a decreasing tendency with an increase in Al concentration both in the strain-amplitude dependent and strain-amplitude independent regions. The observed damping trends depending on strain-amplitude were analyzed and discussed in association with decreasing length between weak pinning points (Al solutes) in Granato-Lücke model.

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과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(한국연구재단 과제번호 : No. 2021R1F1A1049912, 한국생산기술연구원 과제번호 : KITECH NP-23-0030).

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