Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys》.pdf

Journal of Alloys and Compounds 646 (2015) 155 e160 Contents lists available at ScienceDirect Journal of Alloys and Compounds journal homepage: http://www.elsevier .com/locate/jalcom Effect of Mo addition on the microstructure and properties of WCeNieFe hard alloys Zhenye Zhao a, b, Jianwei Liu a, *, Huaguo Tang a, **, Xianfeng Ma a, Wei Zhao a a State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625 Renmin Street, Changchun, 130022, Jilin, China b University of Chinese Academy of Sciences, 100049, Beijing, China a r t i c l e i n f o a b s t r a c t Article history: In the research, an investigation has been carried out on the influence of Mo content and sintering Received 14 April 2015 temperature on the microstructure and mechanical properties of WCeNieFe hard alloys. The WCeNieFe Received in revised form hard alloys with various Mo contents were processed by powder metallurgy. The samples were prepared 21 May 2015 by vacuum sintering at various temperatures. The research results indicate that the addition of Mo was Accepted 24 May 2015 beneficial for increasing transverse rupture strength and inhibiting grain growth without an appreciable Available online 20 June 2015 influence on hardness at room temperature. The highest mechanical properties were obtained by the specimen in