Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effects of Mg Content on the Properties and Casting Characteristics of Al-2Zn-0.2Fe-xMg Alloys

Al-2Zn-0.2Fe-xMg 합금의 물성 및 주조특성에 미치는 Mg함량의 영향

  • Kim, Jeong-Min (Division of Advanced Materials Engineering, Hanbat National University) ;
  • Park, Joon-Sik (Division of Advanced Materials Engineering, Hanbat National University) ;
  • Kim, Ki-Tae (Incheon R&D Center, Korea Institute of Industrial Technology) ;
  • Ko, Se-Hyun (Incheon R&D Center, Korea Institute of Industrial Technology)
  • 김정민 (한밭대학교 신소재공학과) ;
  • 박준식 (한밭대학교 신소재공학과) ;
  • 김기태 (한국생산기술연구원 인천연구센터) ;
  • 고세현 (한국생산기술연구원 인천연구센터)
  • Received : 2012.02.23
  • Accepted : 2012.04.03
  • Published : 2012.04.30
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Abstract

Aluminium-silicon based casting alloys have received an attention for high electrical and thermal conductivity applications, however relatively low conductivity of Al-Si alloys often limits the application. Efforts have been made to develop new high conductivity aluminium casting alloys containing no or less silicon. In this study Al-Zn-Fe based alloys were selected as the new alloys, and the effect of Mg additions on their properties and casting characteristics were investigated. As the magnesium content was increased, the tensile strength of Al-2Zn-0.2Fe based alloy was remarkably increased, while the electrical conductivity was deteriorated. It was observed that the fluidity of the alloys was generally inversely proportional to the Mg content but the hot cracking resistance was rather proportional to it. Cooling curve analyses were carried out to measure the actual solidification range and dendrite coherency temperature.

Keywords

References

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  1. Effects of Zn and Mg Amounts on the Properties of High Thermal Conductivity Al-Zn-Mg-Fe Alloys for Die Casting vol.33, pp.3, 2013, https://doi.org/10.7777/jkfs.2013.33.3.113