대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제49권6호
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  • Pages.440-447
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  • 2011
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
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Ag첨가 마그네슘 합금의 이중열처리에 따른 미세조직 및 기계적 특성변화

Effect of Double Aging on Microstructure and Mechanical Properties of Ag Added magnesium Alloys

  • Lee, Byeong-Deok (Division of Material Science and Engineering, Inha University) ;
  • Baek, Ui-Hyun (Division of Material Science and Engineering, Inha University) ;
  • Jang, Kyoung-soo (Division of Material Science and Engineering, Inha University) ;
  • Han, Jeong-Whan (Division of Material Science and Engineering, Inha University) ;
  • Son, Hyeon-taek (Korea Institute of Industrial Technology (KITECH))
  • 투고 : 2010.11.08
  • 발행 : 2011.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

To improving the mechanical properties of Mg alloys at high temperature, we investigated the mechanical properties at high temperature and the change of microstructure of Mg-6 wt%Zn-0.4 wt%Mn and Mg-6 wt%Zn-0.4 wt%Mn-1 wt%Ag alloys on age treatment that have a stable MgZn phase at high temperature and $AgMg_4$ improving yield stress. In order to predict thermodynamic data of Mg alloys, a phase diagram and precipitation phase were calculated using a thermodynamic program, and it was confirmed that the MgZn and $AgMg_4$ phase existed as main precipitation in this alloys. The experimental data examined using DSC and XRD were comparable with the calculated data for reliability. In order to analysis the microstructure and precipitate phase during aging treatment, it was measured by SEM/EDS and TEM. Lastly, mechanical properties of the MgZn and $AgMg_4$ phase were measured by a tensile test at high temperature.

키워드

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