Influences of Al Additive on Mechanical Properties of WC–AlxFeCoCrNi Cemented Carbides

• Published in: Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2024, Vol.55 (1), p.144-149
• Main Author: Zheng, Donghai
• Format: Article
• Language: English
• Subjects: Alloy powders; Body centered cubic lattice; Cemented carbides; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cobalt; Composite materials; Crystal structure; Face centered cubic lattice; Grain growth; Grain size; High entropy alloys; Materials Science; Mechanical properties; Metallic Materials; Microstructure; Nanotechnology; Original Research Article; Phase composition; Plasma sintering; Process controls; Room temperature; Sintering (powder metallurgy); Spark plasma sintering; Structural Materials; Surfaces and Interfaces; Temperature; Thin Films; Tungsten carbide
• ISSN: 1073-5623; 1543-1940
• DOI: 10.1007/s11661-023-07235-1

In this study, WC–Al x FeCoCrNi ( x  = 0 to 0.5) cemented carbides were prepared using spark plasma sintering, and the phase composition, microstructure, and mechanical properties of the WC–Al x FeCoCrNi composites were studied. The FeCoCrNi high-entropy alloy powder showed a single FCC crystal structure, and the Al additive created a BCC phase. The hardness of the WC–Al x FeCoCrNi ( x  = 0.1 to 0.5) composites at room temperature and 600 °C/800 °C was found to be higher than that of the WC–FeCoCrNi composite, mainly due to the suppression of WC grain growth by the Al additive and the formation of BCC phase.