A simplified hardness model for WC–Co–Cubic cemented carbides

J. Min. Metall. Sect. B-Metall., 57 (2) (2021) 253-259 DOI:10.2298/JMMB200930021P
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Available online 23 February 2021
(Received 30 September 2020; Accepted 23 February 2021)


Hardness is an essential mechanical indication of cemented carbides. The current work presents an approach to predict the hardness of three-phase WC–Co–Cubic cemented carbides, which establishes a relationship among composition, structure and mechanical performance. With the input of initial composition and grain sizes of carbides, structural parameters needed to predict the hardness can be calculated by thermodynamic calculations and diffusion simulations. The calculated hardness of a series of WC–Co–Cubic cemented carbides agrees reasonably with the experimental data. The present model is of reference to predict the hardness for multi-phase composites and design the new type of WC–Co-based cemented carbides.

Keywords: Hardness model; WC–Co–Cubic cemented carbides; CALPHAD
Correspondence Address:
Y. Du *; W.-B. Zhang **,
a State Key Lab of Powder Metallurgy, Central South University, Changsha, China;
b Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
(Ministry of Education), Shandong University, Jinan, China;,
email: This email address is being protected from spambots. You need JavaScript enabled to view it.



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