Evaluation of heat transfer coefficient and solidified structure of Al-9Si3Cu alloy using thermal Analysis and inverse modeling method

In this investigation heat transfer coefficient at the interface of Al-Si melt and green sand mold was evaluated using thermal analysis and inverse modeling method. Also, the solidifying structure of sample was simulated by Cellular Automaton-Finite Element (CAFE) method. For this purpose, a cylindrical part of Al-413 alloy was cast in a green sand mold and the temperature changes versus time was measured by K-type thermocouple and the data was recorded using data logger apparatus at the interface of the cast/mold. Inverse modeling was carried out using traditional finite element ProCAST software equipped with CAFE module. Macrostructure of the solidified sample was evaluated and compared with the result of the CAFE to validate the simulation results. Good agreements between modeling and the experimental results were observed.

Keywords:

heat transfer coefficient , green sand mold , inverse modeling , thermal analysis , Cellular Automaton-Finite Element (CAFE)