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Indexed by:期刊论文

Date of Publication:2012-05-01

Journal:CHINESE SCIENCE BULLETIN

Included Journals:SCIE

Volume:57

Issue:13

Page Number:1595-1599

ISSN No.:1001-6538

Key Words:eutectic alloy; electromagnetic field; microstructure; mechanical properties

Abstract:In an electromagnetic field, the morphology of a binary faceted-faceted (FF) Ni31Si12-Ni2Si 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.