Fabrication of functionally graded materials by introducing wolframium carbide dispersed particles during centrifugal casting and examination of FGM's structure

摘要

The paper describes procedures developed for disperse powders introduction into metal melts. We propose to fabricate functionally graded materials by introducing WC particles into liquid metal during mould filling in centrifugal casting machine. A number of experimental studies have been conducted, samples with different WC content have been fabricated and their structure has been examined. The research has revealed that WC particles were distributed unevenly along the width of the samples with the highest concentration in the outer zone of the cylindrical samples. The particles considerably influenced macro-and microstructure causing its grade to decrease from 2 to 9.