AN IN SITU SURFACE COMPOSITE AND GRADIENT MATERIALOF Al-Si ALLOY PRODUCED BY ELECTROMAGNETIC FORCE
AN IN SITU SURFACE COMPOSITE AND GRADIENT MATERIAL OF Al-Si ALLOY PRODUCED BY ELECTROMAGNETIC FORCE

1. IntroductionAt present, the main processes fOr producing surface composite and gradient materialduring solidiflcation are casting infiltrationl1,2], electromagnetic stirring to separate eutec-tic process of the eutectic alloy3l4], electromagnetic ..nt.iiug.l casting5--7] and centrifugalcastings]. These processes, however, are complicated and require complex equipment;therefore, they are limited in application. The aim of this research is to develop a newmethod for production of in situ s…