Abstract
The working principle and the peculiarities of a new electromagnetic rheocaster, which is based on the use of rotating permanent magnets, and which allows the production of intense three-dimesional multiphase flows in solidifying semisolid alloy slurries and metal matrix composites, are described. This process can be applied to the direct continuous casting of billets, tubes and slabs and is characterized by very low electric power consumption. Local measurement techniques are applied to the study of the evolution of non-newtonian magnetohydrodynamic multiphase flow phenomena with the rotational speed of the inductor, the solid fraction of the aluminium alloy matrix and the size and volume percentage of SiC particles. Satisfactory results concerning the microstructure of solidified aluminium slurries and aluminium matrix composites (homogeneity, crystal shape, grain size, fraction of primary solid, distribution of SiC particles) were obtained. A discussion is presented relating the metallurgical findings to the heat and three-phase flow measurements.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
