[KSCI] Korea Science Citation Index Service

A Numerical Study of the Effect of Casting Temperature and Rotational Frequency of Mold on the Functionally Graded Microstructure in Centrifugal Casting of Hyper-eutectic Al-Si Alloy

Park, Jeong-Wook (Dept. of Metallurgical System Eng., Pukyong National Univ.)
Kim, Heon-Joo (Dept. of Metallurgical System Eng., Pukyong National Univ.)

Publication Information

Journal of Korea Foundry Society / v.29, no.2, 2009 , pp. 78-85 More about this Journal

Abstract

Functionally graded microstructure of centrifugal cast Al-Si alloy, especially distribution of primary Si particles according to the changes of melt pouring temperature and rotation frequency was investigated by numerical simulation. Moving velocity of Si particles increased as the melt pouring temperature and rotational frequency of mold increased. Therefore, segregation tendency of primary Si particles toward inner side of cylindrical sample increased as the melt pouring temperature and rotational frequency of mold increased. Rich distribution region of particles was located at 0.9, 0.7, 0.4 mm from inner surface of cylindrical sample under the centrifugal cast condition of $750^{\circ}C$ melt pouring temperature and 1500, 2000 and 2500 rpm mold rotational frequencies, respectively, by numerical simulation.

Keywords

Hyper-eutectic Al-Si alloy; Functionally graded material; Numerical simulation; Centrifugal casting;

Citations & Related Records

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