Abstract
Abstract The effects of Cr 3 C 2 and VC on densification behavior, grain growth and mechanical properties of the WC-8 wt% ZrO 2 composites were investigated, and the relationship between the mechanical properties and microstructure was studied. The addition of VC and Cr 3 C 2 not only retarded densification of the WC–ZrO 2 material, but also significantly suppressed the growth of WC-grains and ZrO 2 -particles. For the WC–ZrO 2 composite without VC and Cr 3 C 2 , microstructure coarsening at elevated temperatures caused degradation in hardness, whereas the hardness maintained a high value of ~22 GPa for the composite with VC and Cr 3 C 2 additives as the microstructure remained fine. The fracture toughness of the WC-based materials toughened by 8 wt% ZrO 2 seemed insensitive to the coarseness of microstructure, and achieved a value of ~11 MPa m 1/2 when VC and Cr 3 C 2 were added.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
