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Rare Metals

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Microstructure and properties of coarse-grained WC–10Co cemented carbides with different carbon contents during heat treatments

  • Yuan-Feng Xie
  • Xing-Cheng XieEmail author
  • Zhong-Wu Li
  • Rui-Jun Cao
  • Zhong-Kun Lin
  • Qing Li
  • Chen-Guang Lin
Article
  • 2 Downloads

Abstract

The effects of cryogenic treatment (CT) and tempering-cryogenic treatment (TCT) on the microstructure and properties of coarse-grained WC–10Co cemented carbides with different carbon contents were researched. The binder phase, WC mean grain sizes, W solubility in the binder, relative magnetic saturation, densities, hardness, wear resistance and second phase precipitation of cemented carbides with different heat treatments were discussed. The results show that there are significant changes of microstructure and properties in the samples with CT and TCT, especially due to the precipitation of metastable nanoparticles \({\text{W}}_{x} {\text{Co}}_{y} {\text{C}}_{z}\) in the binder during the heat treatments of CT and TCT. With the simultaneous combination of microstructure and nanoparticle-reinforced binder, a dramatically improved combination of hardness and wear resistance of the samples after TCT has been achieved.

Keywords

Cryogenic treatment Tempering Coarse-grained cemented carbide Carbon content Nanoparticle-reinforced binder 

Notes

Acknowledgements

This work was financially supported by the General Research Institute for Nonferrous Metals Youth Science Foundation (No. 52147).

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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Powder Metallurgy and Special Materials Research DepartmentGeneral Research Institute for Nonferrous MetalsBeijingChina

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