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


한국주조공학회지 (36권5호 153-158)

Mechanical Properties and Mold Filling Capability of Al-Si-Mg Casting Alloy Fabricated by Lost Foam Casting Process

소실모형주조공정으로 제조한 Al-Si-Mg계 주조합금의 기계적 성질 및 주형 충전성

Jeong-Min Kim†, Tae-Hyung Ha and Kyeong-Hwan Choe*

Department of Advanced Materials Engineering, Hanbat National University, *Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology,



The lost foam casting process was used to fabricate Al-Si-Mg cast specimens, and the e effects of the chemical composition and process variables on the tensile properties a and the mold filling ability were investigated. Some porosity formation was observed in thick sections of the casting and better tensile properties were obtained for thin sections, presumably because of their lower porosity and the higher cooling rate. Tensile properties were not clearly enhanced by grain refining treatment with Ti; however, the elongation was significantly improved by Sr modification of the Al-Si-Mg alloy. The mold filling distance was generally proportional to the pouring temperature of the melt, and the distance was also increased by the addition of Ti.


Aluminum, Casting, Al-Si-Mg, Mechanical properties, Mold filling