Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Microstructure and Creep Property of Die-Cast AXE710 Mg Alloy

다이캐스팅으로 제조한 AXE710 Mg 합금의 미세조직 및 크리프 특성

  • Kang, Mun Gu (Magnesium Technology Innovation Center, Research Institute of Advanced Materials School of Materials Science and Engineering, Seoul National University) ;
  • So, Tae Il (Magnesium Technology Innovation Center, Research Institute of Advanced Materials School of Materials Science and Engineering, Seoul National University) ;
  • Jung, Hwa Chul (Magnesium Technology Innovation Center, Research Institute of Advanced Materials School of Materials Science and Engineering, Seoul National University) ;
  • Shin, Kwang Seon (Magnesium Technology Innovation Center, Research Institute of Advanced Materials School of Materials Science and Engineering, Seoul National University)
  • 강문구 (마그네슘기술혁신센터, 서울대학교 재료공학부) ;
  • 소태일 (마그네슘기술혁신센터, 서울대학교 재료공학부) ;
  • 정화철 (마그네슘기술혁신센터, 서울대학교 재료공학부) ;
  • 신광선 (마그네슘기술혁신센터, 서울대학교 재료공학부)
  • Received : 2011.07.04
  • Published : 2011.09.25
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Abstract

To develop creep resistant die-cast Mg alloys, various alloying elements, including Ca, Ce, and Sr, were added to a Mg-Al alloy. The AXE710 alloy was produced on a 320 ton high-pressure die casting machine. The microstructure and creep properties of the alloy were examined. The creep behavior was investigated at $150^{\circ}C$ for stresses ranging from 50 to 100 MPa. The stress exponent was derived from the relationship between normalized secondary creep rates and compensated effective stresses. It was found to be 4.9, indicating that the dislocation climb is a dominant creep mechanism.

Keywords

Acknowledgement

Supported by : 서울대

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