|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||Microstructure and Mechanical Properties of High Entropy Ceramic/High Entropy Alloys Composite High Entropy Material
||Zhanjiang Li, Pinqiang Dai
|On-Site Speaker (Planned)
The (ZrTaMoTiW)C/FeCoCrNiAl composite high entropy material were fabricated by mechanical alloying and spark plasma sintering. It was found that the double-phase structured solid solution of face-centered cubic and hexagonal be obtained after 20 h milling and spark plasma sintering at 1400℃.With respect to the sinterability of high entropy ceramics, the addition of FeCoCrNiAl HEA can reduce sintering temperature of high entropy ceramics and the oxide impurities during sintering to enhance the sintered density. Comparing with the traditional sintering aid Co, HEA can decrease the solubility of high entropy ceramics in HEA and the solid-liquid surface energy to inhibit the grain growth. Moreover, an optimized combination mechanical properties was obtained for the (ZrTaMoTiW)C -6 wt.% FeCoCrNiAl composite high entropy material, including the relative density of 97.75±1%, the Vickers hardness of 1974.32±20HV10.