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http://dx.doi.org/10.7777/jkfs.2016.36.5.153

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

Kim, Jeong-Min (Department of Advanced Materials Engineering, Hanbat National University)
Ha, Tae-Hyung (Department of Advanced Materials Engineering, Hanbat National University)
Choe, Kyeong-Hwan (Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology)
Publication Information
Journal of Korea Foundry Society / v.36, no.5, 2016 , pp. 153-158 More about this Journal
Abstract
The lost foam casting process was used to fabricate Al-Si-Mg cast specimens, and the effects of the chemical composition and process variables on the tensile properties 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.
Keywords
Aluminum; Casting; Al-Si-Mg; Mechanical properties; Mold filling;
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1 S. Kumar, P. Kumar and H. S. Shan, J. Mater. Process. Tech., "Optimization of tensile properties of evaporative pattern casting process through Taguchi's method", 204 (2008) 59-69.   DOI
2 S. Sun, B. Yuan and M. Liu, Trans. Nonferrous Met. Soc. China, "Effects of moulding sands and wall thickness on microstructure and mechanical properties of Sr-modified A356 aluminum casting alloy", 22 (2012) 1884-1890.   DOI
3 L. Trumbulovic, Z. Acimovic, Z. Gulisija and L. Andric, Mater. Letters, "Correlation of technological parameters and quality of castings obtained by the EPC method", 58 (2004) 1726-1731.   DOI
4 H. Jafari, M. H. Idris and A. Shayganpour, Trans. Nonferrous Met. Soc. China, "Evaluation of significant manufacturing parameters in lost foam casting of thin-wall Al-Si-Cu alloy using full factorial design of experiment", 23 (2013) 2843-2851.   DOI
5 M. Karimian, A. Ourdjini, M. H. Idris and H. Jafari, Trans. Nonferrous Met. Soc. China, "Effect of pattern coating thickness on characteristics of lost foam Al-Si-Cu alloy casting", 22 (2012) 2092-2097.   DOI
6 W. Jiang, Z. Fan, D. Liu, D. Liao, X. Dong and X. Zong, Mater. Sci. Eng. A, "Correlation of microstructure with mechanical properties and fracture behavior of A356-T6 aluminum alloy fabricated by expendable pattern shell casting with vacuum and low-pressure, gravity casting and lost foam casting", 560 (2013) 396-403.   DOI
7 L. Wang and S. Shivkumar, J. Mater. Sci., "Strontium modification of aluminium alloy castings in the expendable pattern casting process", 30 (1995) 1584-1594.   DOI
8 F. Sonnernberg, Lost foam casting made simple, American Foundry Society, Schaumburg, IL, USA (2008) 41-57, 173-200.
9 K. Siavashi, Ph. D. Thesis, Univ. of Birmingham, "The effect of casting parameters on the fluidity and porosity of aluminum alloys in the lost foam casting process" (2011).
10 K. T. Akhil, S. Arul and R. Sellamuthu, Procedia Mater. Sci., "The effect of section size on cooling rate, microstructure and mechanical properties of A356 aluminium alloy in casting", 5 (2014) 362-368.   DOI
11 J. E. Gruzleski and B. M. Closset, The treatment of liquid aluminum-silicon alloys, American Foundrymen's Society, Inc., Des Plaines, IL, USA (1990) 57-73, 92-93.
12 E. N. Pan and K. Y. Liao, AFS Trans., "Study on flowability of EPC A356 Al alloys", 106 (1998) 233-242.
13 M. C. Flemings, Solidification Processing, McGraw-Hill, Inc., New York, USA (1974) 219-224.
14 Kwon YD and Lee ZH, Mater. Sci. Eng. A, "The effect of grain refining and oxide inclusion on the fluidity of Al-4.5Cu-0.6Mn and A356 alloys", 360 (2003) 372-376.   DOI