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Meeting Materials Science & Technology 2017
Symposium Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
Presentation Title Sinter-forging and Spark Plasma Sintering of WC-Co for Enhanced Mechanical Properties
Author(s) Zhao Ding, Weiliang Yao , Leon Shaw, Elisa Torresani , Eugene Olevsky , Claude Estournes
On-Site Speaker (Planned) Leon Shaw
Abstract Scope In this study, nano-WC/Co powder was synthesized using a method termed as the integrated mechanical and thermal activation (IMTA) process. The nano-powder was converted to bulk material via sinter-forging and spark plasma sintering (SPS). With the controlled growth nano-WC grains could grow to have thin platelet geometry which offered simultaneous enhancements in both hardness and toughness. The thin thickness of WC platelets minimizes the mean free path of dislocations and thus offers high hardness, while the high aspect ratio of the platelets provides crack deflection and thus superior toughness. Sintering conditions of sinter-forging and SPS were compared to elucidate the influence of electric fields on microstructure evolution and the attainment of the thin WC platelet microstructure.
Proceedings Inclusion? Undecided


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