Model of casting process of composites reinforced locally at inner wall of bush in electromagnetic field
Sławomir Golak
Quarterly No. 1, 2013 pages 65-71
DOI:
keywords: electromagnetic buoyancy, magnetohydrodynamics, functionally graded materials, metal matrix composites
abstract The methods of manufacturing composites with spatial variation in the reinforcement distribution which exploit reinforcement segregation in the liquid matrix are among the most effective ones. However, methods based on density differences such as gravitational casting and centrifugal casting have their limitations in the range of reinforcement configurations that are possible to obtain. An alternative is to exploit the phenomenon of electromagnetic buoyancy occurring in situations where the particles and the matrix have different electric conductivities. This paper presents some possibilities of exploiting this phenomenon to obtain the local reinforcement of a bush made of aluminum alloy AK12 with SiC particles at its inner wall. The paper discusses the model of such a process and the effect of its parameters on the trajectories of the particles moving in the molten matrix.