Abstract
With high module, high strength and good isotropy, SiCp/Al composite has been widely applied in the fields such as airspace, transportation vehicle and electronic packaging. Stir casting process with advantages of low cost, high efficiency and near-net shape has become a main production method, but the two-phase flow behavior of the SiCp/Al composite during casting process has greatly effect on particle distribution and ultimate properties of casting. In this work, a two-phase flow computational model was developed, and the filling flow process of SiCp/A357 composite based on a benchmark test die was numerically simulated with commercial software Fluent. The effects of SiCp volume fraction and SiCp size on the flow field of SiCp/A357 composite were investigated. The results showed that there existed difference of flow fields between A357 alloy and SiCp/A357 composite, and the simulation results would be helpful to optimize the casting process.
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