Simulation of solidification behavior in spray deposited preform: I. Theoretical Analysis

Solidification in preform is an important stage during spray forming process, which shows great effect on the final formation of microstructure within the spray deposited preform. It is essential to make a full understanding of the solidification process to optimise the spray forming process and obtain desired preform microstructures. In this study, a concept of "vertual* solidification layer is applied to establish a theoretical model to simulate the solidification process in preform during spray forming, which will provide a theoretical tool for the further analysis of the solidification behavior in spray deposited preform.