Effects of Mo and VC on the Microstructure and Properties of Nano-Cemented Carbides

Authors

  • Jian Chen School of Electromechanical Engineering, Guangdong University of Technology
  • Wei Liu School of Electromechanical Engineering, Guangdong University of Technology
  • Xin Deng School of Electromechanical Engineering, Guangdong University of Technology
  • Shanghua Wu School of Electromechanical Engineering, Guangdong University of Technology

Abstract

In this study, four unique groups of nano-cemented carbides with 8 wt.% Co and trace amount of Mo and VC have been successfully synthesized. The effect of Mo and VC has been investigated comprehensively on both the microstructure and mechanical behavior of nano-cemented carbide. The results show that Mo significantly increases hardness but decreases the fracture toughnesses and VC slightly increases hardness and strongly increases fracture toughness of nano-cemented carbide. It is found that the optimum Mo and VC contents are both 0.5 wt.%. The average WC grain size is about 370 nm. The hardness is about 2350 HV30 and the fracture toughness is about 11.2 MPam-1/2.

Downloads

Published

2017-12-13

Issue

Vol. 48 No. 1 (2016)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors retain copyright of the published papers and grant to the publisher the right to publish the article, to be cited as its original publisher in case of reuse, and to distribute it in all forms and media. Articles will be distributed under the Creative Commons Attribution International License (CC BY 4.0).