|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||A Modeling and Experimental Investigation on the Formation of Acicular Silicon and Sludge in High Pressure Die Casting of a Modified A383 Alloy
||Mikko Kärkkäinen, Laurentiu Nastac, Luke Brewer, Vishweshwar Arvikar, Ilya Levin
|On-Site Speaker (Planned)
A numerical model is being developed to predict the formation of sludge (e.g., Fe-rich intermetallics) during high pressure die casting (HPDC) of a modified A383 alloy. The sludge plays a major detrimental role in the mechanical properties, especially the fracture characteristics, of high pressure die cast engine components. The modelling approach consists of integrating a macroscopic model for prediction of fluid flow and solidification conditions in HPDC A383 components with a microscopic solidification structure model. The aim of the integrated model is to accurately predict the evolution of the solidification microstructure including the sludge formation in HPDC A383 components. The model predictions are being compared against experimental measurements (e.g., amount, type and size of sludge defects) in A383 samples extracted from various regions of an HPDC engine block. The validated model can then be applied to determine the effects of different solidification conditions on the formation of sludge.
||Planned: Supplemental Proceedings volume