Numerical Simulation and Analysis of Spray-Deposited Silicon-Aluminum Alloys

The numerical simulation of solidification processing for Si-Al alloys prepared by spray forming was adopted by considering heat radiation in the cooling process of droplets. A relationship among droplet velocity, heat transfer coefficient, droplet temperature, cooling velocity of droplets, solid fraction and axial distance was acquired. The variations of droplet temperature and solid fraction before and after heat radiation is considered. The influence of atomization pressure and axial distance on solid fraction was also discussed.