5th International Conference on Advances in Solidification Processes (ICASP-5) 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5)

The formation of coarse Fe and Mn containing intermetallic particles during the DC casting of Al-Mn-Ti-Fe-Si alloys is detrimental to the alloys' cracking susceptibility, formability and even final mechanical/corrosion properties. In this talk, SEM/TEM are employed to reveal the microstructural features of the particles including composition, size distributions and morphologies. These experimental measurements are then compared with the predictions from Phase field method and Frequency Distribution Function method (implemented in our in-house software PreciMS). The combination of modeling and experimental approaches is able to shed some lights on the origins of these coarse particles. It is expected that this work is useful for the heat exchanger alloys composition design and casting parameters optimization.