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Production of feedstock material for semi-solid material processing by cooling slope casting process

Budiman H., and Omar M.Z., and Jalar A., and Syarif J., and Ghazali M.J., and Abdullah S., (2009) Production of feedstock material for semi-solid material processing by cooling slope casting process. International Journal of Mechanical and Materials Engineering, 4 (2). pp. 176-180. ISSN 1823-0334

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Official URL: http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=781

Affiliations

Universiti Kebangsaan Malaysia, Faculty of Engineering and Built Environment, Dept. Mechanical and Material Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering and Built Environment, Dept. Mechanical and Material Engineering
Universiti Kebangsaan Malaysia, Faculty Science and Technology, School of Applied Physics
Universiti Kebangsaan Malaysia, Faculty of Engineering and Built Environment, Dept. Mechanical and Material Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering and Built Environment, Dept. Mechanical and Material Engineering
Universiti Kebangsaan Malaysia, Faculty of Engineering and Built Environment, Dept. Mechanical and Material Engineering

Abstract

Semi-solid processing routes for metallic alloys require feedstock materials with non-dendritic microstructure in the semi-solid state. Cooling slope casting process is one of the methods used to produce such structure whereby molten alloy is poured onto a cooling slope into a mould before semi-solid metal processing is carried out. This paper discusses the resulting microstructures of the ingot cast via the cooling slope. Al-Si alloy was melted in crucible graphite with dry argon degassing then poured on mild steel cooling slope which is coated with Boron Nitride. In this experiment, comparison between cooling slope with and without water circulation was investigated. From the experiment, it can be concluded that the water circulation influenced the fraction volume of α-Al particle, grain size and shape factor (SF).

Item Type:Journal
Keywords:Semi-solid processing, Cooling slope casting, non-dendritic microstructure, water circulation
Subjects:T Technology, Engineering
ID Code:10303

Cardoso Legorreta E., 2004, The development of microstructure in the NRC process, PhD thesis, The University of Sheffield, UK.

Flemings, M.C.1991, Metall. Trans. A 22 957

Haga, T. and Suzuki S., 2001, Casting of Aluminium Alloy Ingots for Thixoforming Using a Cooling Slope, Journal of Materials Processing Technology, 118, pp. 169-172.

Haga, T., P. Kapranos, 2002, J. Mater. Proc. Technol. 130–131, 594

Motegi, T., Tanabe, F. and Sugiura, E.,2002, Continuous Casting of Semisolid Aluminium Alloys, Materials Science Forum, 396-402, pp. 203-208

Spencer, D.B., Mehrabian, R. and Flemings, M.C., 1972, Rheological Behavior of Sn-15 Pct Pb in the Crystallization Range, Metall. Trans., 3, pp. 1925-1932.

Xia, K. and Tausing, G., 1998, Liquidus Casting of a Wrought Aluminium Alloy 2618 for Thixoforming, Materials Science and Engineering A, 246, Issues 1-2, pp.1-10

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