pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (37권6호 186-192)
Mold Filling and Mechanical Properties of Thin Sectioned Al-Si Alloy Fabricated by Lost Foam Casting Process
소실모형주조법으로 제조한 박판형 Al-Si합금에서의 주형 충전 및 기계적 성질
Jeong-Min Kim†, Jae-Cheol Lee, Jin-Young Choi, Jae-Ik Cho* and Kyeong-Hwan Choe**
Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Korea, *Seonam Regional Division, Korea Institute of Industrial Technology, Kwangju 61012, Korea, **Research Institute of Advanced Manufacturing Technology, Korea Ins
The lost foam casting method was used to fabricate Al-Si alloy thin sheet specimens; the effects of chemical composition and process variables on the mold filling and mechanical properties were investigated. The mold filling capability was observed to be proportional to the pouring temperature, and both the vibration imposed during the casting and the application of a pattern coating had rather negative effects. The mold filling capability also decreased with the addition of Mg or TiB. When the Mg content increased, the tensile strength of the cast alloy was enhanced, but the elongation decreased. However, after T6 heat treatment, both the strength and the elongation were improved. TiB addition for grain refining or pattern coating did not significantly affect the tensile properties.
Lost foam casting, Al-Si, Mold filling, Mechanical properties
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