Abstract
The microstructure of a WC–Co based cemented carbide has been investigated before and after plastic deformation at high temperatures. The material was fabricated with a Co binder phase content of 16vol.% and smaller additions of Cr. Hot compressive creep tests were performed under an applied load of 900MPa at 1000 and 1100°C. The test bars were deformed to 10 or 20% strain at 1000°C, and to 7% strain at 1100°C. Quantitative microscopy using SEM suggests that WC grain growth took place during the creep tests, and that the growth took place preferentially in the plane perpendicular to the load axis. TEM showed that there was an increased dislocation density in the WC grains after creep deformation. Deformation was also associated with a redistribution of the WC grains resulting in the formation of intergranular binder phase lamellae and cavities. EBSD showed that there was an increased spread in the crystallographic orientation of the binder phase after deformation.
Sign-in/Register to access full text options 
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 callMore From: International Journal of Refractory Metals and Hard Materials
Disclaimer: 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.
