Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Effects of Alloying Elements on the Formation of Interfacial Reaction Layer between Molten Aluminium Alloys and STD61 Tool Steel

알루미늄 합금 용탕/STD61 공구강의 계면 반응층 형성에 미치는 합금원소의 영향

  • Park, Heung-Il (Dept. of Materials Processing and Engineering, Graduate School, Pukyong National University) ;
  • Park, Ho-Il (Dept. of Materials Processing and Engineering, Graduate School, Pukyong National University)
  • 박흥일 (부경대학교 대학원 소재프로세스공학과) ;
  • 박호일 (부경대학교 대학원 소재프로세스공학과)
  • Published : 2005.08.20
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Abstract

The experiment of hot dip interaction tests was carried out in order to study the formation behavior of interfacial reaction layer between as-received STD61 hot work tool steel and a commercial pure aluminum melt, Al-xwt.%Fe(x=0.2, 0.5, 0.8 and 1.1) alloys melt and Al-xwt.%Si(x=1.0, 4.0, 7.0 and 10.0) alloys melt, respectively. The results show that the reaction layer, over 300 ${\mu}m$ in thickness, is easily formed by the dissolution of silicon from as-received tool steel. When the iron content in the aluminum alloy is higher than 1.1 wt.%, the thickness of reaction layer decreases below 180 ${\mu}m$ by preventing iron dissolution from the tool steel. The silicon dissolved from tool steel acts as a strong promoter on the formation of reaction layer, but the alloyed silicon in molten aluminum alloys acts as an inhibitor on the formation of reaction layer.

Keywords

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