Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Sphering of Primary Dendrites in Al-Si alloys by Mushy Zone Heat Treatments

고액 공존영역 온도 열처리에 의한 Al-Si합금의 초정 구형화

  • Ahn, Jung-Ho (Materials Research Center for Energy Systems Dept. of Materials Eng., Andong National Univ.) ;
  • Song, In-Hyuk (Korea Institute of Machinery & Metals, Dept. of Materials Processing) ;
  • Hahn, Yoo-Dong (Korea Institute of Machinery & Metals, Dept. of Materials Processing)
  • 안중호 (안동대학교 재료공학과) ;
  • 송인혁 (한국기계연구원 재료공정연구부) ;
  • 한유동 (한국기계연구원 재료공정연구부)
  • Published : 1996.12.20
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Abstract

In the present work, we have investigated the strain-induced melt activation (SIMA) process in Al-8%Si and Al-25%Si alloys. Primary dendrites were transformed into spherical microstrctures by mushy zone heat treatments of the cold-worked alloys. Various processing parameters which govern the sphering of the dendrites have been examined. The result showed that semi-solid alloys having a typically nondendritic spherical microstructure can be easily produced by this method.

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