Numerical Model of Sic Particle Interaction with Solidification Front in Az91/(SiCp) Composite

• Main Authors: Żak P. L., Kalisz D., Rączkowski G.
• Format: Article
• Language: English
• Published: Polish Academy of Sciences 2017-09-01
• Series: Archives of Metallurgy and Materials
• Subjects: AZ91/(SiCp) composite; solidification front; modeling
• Online Access: http://www.degruyter.com/view/j/amm.2017.62.issue-3/amm-2017-0248/amm-2017-0248.xml?format=INT

Presented work focused on the movement of SiC particles in the vicinity of the solidification front in AZ91/(SiC)P composite. Authors describe the mathematical model that governs this phenomenon. On the base of following numerical model own computer program was prepared. The behavior of a particle moving parallel to the solidification front was analyzed. Three variants of local velocity gradient of liquid metallic phase were analyzed for a particle of radius 10, 50 and 100 μm. At a bigger velocity gradient the SiC particle was observed to go down quicker and to move towards the solidification front. This effect was stronger for SiC particles, which had a bigger radius, i.e. 100 and 50 μm