Comparison between ultrafine-grained WC–Co and WC–HEA-cemented carbides |
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Authors: | P-F Zhou T-C Yuan |
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Affiliation: | State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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Abstract: | The AlFeCoNiCrTi high-entropy alloy (HEA) powders were prepared by high-energy ball milling. The ultrafine-grained WC–HEA and WC–Co-cemented carbides were fabricated through planetary ball milling and heat-pressure sintering. The microstructures and properties of the sintered alloys were compared using scanning electron microscope, X-ray diffraction, mechanical property testing and electrochemical testing. It has been shown that the AlFeCoNiCrTi HEA can be used as a binder for the ultrafine-grained WC-based cemented carbide. The WC–HEA-cemented carbide has better performances than the WC–Co-cemented carbide. The suitable contents of HEA can inhibit the WC grain growth and improve the mechanical properties and corrosion resistance of cemented carbides. |
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Keywords: | Ultrafine–grained-cemented carbide high-entropy alloys microstructure mechanical properties corrosion resistance |
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