期刊
TRIBOLOGY INTERNATIONAL
卷 191, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2023.109065
关键词
Abrasive; Three-body; Nanoindentation; Ceramic composite; Transmission electron
This study used fast hot pressing sintering to fabricate WC/AlCoCrFeNi2.1 metal matrix composites (MMCs). It was found that the addition of reinforced particles increased the microhardness, nanoindentation and wear resistance of the MMCs. During frictional processes, an oxide film formed, providing material protection, enhancing stability and reducing friction-induced losses.
The wear resistance of materials is crucial in mechanical component design, but there has been limited research on the tribological behavior of WC-reinforced high entropy alloy(HEA) to date. Therefore, this study used fast hot pressing sintering to fabricate WC/AlCoCrFeNi2.1 metal matrix composites (MMCs). It was observed that: 1. The HEAs matrix had a biphase eutectic structure with FCC and BCC phases, while the interfacial layer consisted of M7C3 and M23C6 (M=Cr, W). 2. MMCs showed proportional increases in microhardness, nanoindentation and wear resistance with reinforced particle addition. 3. During frictional processes, an oxide film formed providing material protection, enhancing stability and reducing friction-induced losses. Adhesive wear, abrasive wear, and three-body abrasion were identified as primary types of observed wear.
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