Melt Quenched High Pressure Die Casting (MQ-HPDC) of an A356 Alloy

Abstract:

Melt quenched high pressure die casting (MQ-HPDC) is a new die casting process developed recently for improving the casting quality of the conventional HPDC process. In the MQ-HPDC process, an alloy melt with a specified dose and superheat is quenched by directly pouring the alloy melt into a preheated metallic container. The thermal mass and preheating temperature of the container is selected so that the alloy melt is quenched just below the alloy liquidus and heterogeneous nucleation takes place during the melt quenching. The quenched alloy melt is then fed immediately into the shot sleeve for component casting. In this paper we present the MQ-HPDC process and the resultant microstructures and mechanical properties of a MQ-HPDC A356 alloy.

• Periodical: Materials Science Forum (Volume 765)
• Pages: 195-199
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.765.195
• Online since: July 2013
• Authors: Shouxun Ji, Bo Jiang, Wen Chao Yang, Zhong Yun Fan
• Keywords: High Pressure Die Casting (HPDC), Melt Quenching, Microstructural Evolution, Nucleation

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