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pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (25권4호 161-167)

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

Heung-ll Park, Ho-Il Park

Pukyong National University


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 300μm 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 μm 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.


Molten aluminium alloys, Tool steel, lnterfacial reaction layer, Alloying elements.