Electromagnetic modification of faceted-faceted Ni 31Si 12-Ni 2Si eutectic alloy

Abstract

In an electromagnetic field, the morphology of a binary faceted-faceted (FF) Ni 31Si 12-Ni 2Si eutectic microstructure and the alloy's mechanical properties were investigated. Hardness experiments demonstrated that the solidified ingots were significantly strengthened, and the hardness was improved to 63.1 and 786.6 on the Rockwell hardness C and Vickers hardness scales, respectively. Tests of friction and wear in stirred FF eutectic alloys showed excellent anti-fatigue and anti-adhesion wear performance. Alloy changed from an anomalous microstructure to a refined quasi-regular structure, and there was an increase in the lamellar microstructure fraction. The formation process of the refined quasi-regular microstructure and the resulting mechanical properties were investigated. © 2012 The Author(s).