This paper presents the application on nonlinear thermal expansion model for casted aluminum silicon carbide. Thermal expansion model was developed during filling process in the aluminum silicon carbide casting process. The application of nonlinear thermal expansion model was successfully performed in sand casting, low pressure die casting and investment casting. The coefficient of thermal expansion (CTEs) of fiber reinforced metal matrix composite material is significantly influenced by the thermal stresses and interfaces between matrix and fibers. The thermal expansion behavior of the aluminum silicon carbide relies on the thermal expansion of the fibers, and influenced by the onset of interfacial strength and residual stress state. The change in internal stress of fiber in composite is positive and increasing with the increasing temperature. By applying the nonlinear thermal expansion model to the casting processes could reduce the casting defects. In addition, nonlinear thermal expansion model can be applied to as references for the aluminum silicon carbide materials in casting processes.

Mathematical model, heat transfer, aluminum silicon carbide

• Ir. Taufik, S.T., M.M., Ph.D., IPM