Journal of Korea Foundry Society (한국주조공학회지)
- Volume 11 Issue 4
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- Pages.314-322
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- 1991
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- 1598-706X(pISSN)
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- 2288-8381(eISSN)
A Study on the Effect of Modifiers Affecting the Modification of the Al-Si Alloys
Al-Si 합금의 개량화에 미치는 각종 개량화제의 영향에 관한 연구
- Park, Joon-Peuo (Dept. of Materials Eng., Hanyang Univ.) ;
- Kim, Kyoung-Min (Dept. of Materials Eng., Hanyang Univ.) ;
- Cho, Soon-Hyung (Dept. of Materials Eng., Hanyang Univ.) ;
- Yoon, Eui-Park (Dept. of Materials Eng., Hanyang Univ.)
- Published : 1991.08.20
Abstract
In this study, Na, Li, Sb, Sr were added as the modifiers to improve the mechanical proper ties of Al-Si alloys and their effects were compared one another Thermal analysis was carried out to measure the degree of undercooling, that is, the basic mechanism of modifying effect. The measurements of holding time and analyses of components of Al-Si alloys were carried out to compare the fading of the modifiers. Greater degree of undercooling was measured from the modified alloy than the normal alloys. In the modified alloy, the shape of Si was changed into a fine fiber phase or a lamellar phase from the coarse plate phase. There are not modifying effect of Sb below the
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