Abstract
The W–Cu–Zn alloy with α-brass matrix and low W–W contiguity was prepared by method of electroless copper plating combined with spark plasma sintering (SPS) method. The effects of process and parameters on the microstructure and mechanical properties of the alloy were investigated. The W–Cu–Zn alloy with a relative density of 96 % and a W–W contiguity of about 10 % was prepared by original fine tungsten particles combined with wet mixing method and SPS solid-state sintering method at 800 °C for 10 min. The microstructure analysis shows that Cu–Zn matrix consists of nano-sized α-brass grains, and the main composition is Cu3Zn electride. The nano-sized Cu was coated on the surface of tungsten particles by electroless copper plating method, and the fairly low consolidation temperature and short solid-state sintering time result in the nano-sized matrix phase. The dynamic compressive strength of the W–Cu–Zn alloy achieves to 1000 MPa, but the alloy shows poor ductility due to the formation of the hard and brittle Cu3Zn electrides. The fine-grain strengthening and the solution strengthening of the Cu–Zn matrix phase are responsible for the high Vickers microhardness of about 300 MPa for W–Cu–Zn alloy.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.