열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제35권5호
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  • Pages.255-261
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  • 2022
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  • 1225-1070(pISSN)
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  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
권호 표지
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시효한 Mg-5%Sn 합금의 경도와 진동감쇠능 변화

Changes in Hardness and Damping Capacity of Aged Mg-5%Sn Alloy

  • 전중환 (한국생산기술연구원 산업소재공정연구부문)
  • Jun, Joong-Hwan (Industrial Materials Processing R&D Department, Korea Institute of Industrial Technology)
  • 투고 : 2022.08.01
  • 심사 : 2022.08.22
  • 발행 : 2022.09.30
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초록

In this work, the strain-amplitude independent and strain-amplitude dependent damping capacities of Mg-5%Sn alloy have been investigated as a function of its age-hardening response. The hardness increased with an increase in aging time, reached a peak value after 48 h, and then it gradually decreased. The damping capacities of the Mg-5%Sn alloy exhibited a decreasing tendency in the order of solution-treated, under-aged, peakaged, and over-aged states in the strain-amplitude dependent region, whereas they increased continuously with aging time in the strain-amplitude independent region. The microstructural examination during aging revealed that the lower concentration of Sn solutes in the α-(Mg) matrix and the lower density of the Mg2Sn precipitate particles may well be the crucial factors for better damping values in the strain-amplitude independent and strain-amplitude dependent regions, respectively.

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과제정보

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

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