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http://dx.doi.org/10.7777/jkfs.2019.39.5.87

Effect of Mold Materials on the Microstructure and Tensile Properties of Al-Si based Lost Foam Casting Alloy  

Kim, Jeong-Min (Department of Advanced Materials Engineering, Hanbat National University)
Lee, Gang-Rae (Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology)
Choe, Kyeong-Hwan (Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology)
Publication Information
Journal of Korea Foundry Society / v.39, no.5, 2019 , pp. 87-93 More about this Journal
Abstract
The effects of mold materials on the microstructure and tensile properties were investigated to develop a mass production technique of aluminum alloy parts with excellent mechanical properties using a lost foam casting method. The microstructures of the plate-shaped cast alloy showed a tendency to be finer in proportion to the thickness of the plate, and a remarkably fine structure was obtained by applying a steel chill or a ball as a mold material compared to general sand. When a steel ball was used, it was observed that the larger the ball, the finer the cast structure and the better the tensile properties. The microstructure and tensile properties of the cast parts with complex shapes were greatly affected by the gating system, but the positive effects of the steel chill and the steel ball as a mold material were clear.
Keywords
Aluminum alloy; Lost foam casting; Microstructure; Tensile properties;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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