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

  • 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.

Published
2017-12-13
Issue
Vol 48 No 1 (2016)
Section
Articles

Copyright 

Authors retain copyright of the published article and have the right to use the article in the ways permitted to third parties under the Creative Commons Attribution 4.0 International license. Full bibliographic information (authors, article title, journal title, volume, issue, pages) about the original publication must be provided and a link must be made to the article's DOI. This license allows to copy and redistribute the material in any medium or format, remix, transform, and build upon it for any purpose, even commercially, as long as appropriate credit is given to the original author(s), a link to the license is provided and it is indicated if changes were made.