title: Effect of WC/Co coherency phase boundaries on Fracture toughness of the nanocrystalline cemented carbides.
abstract: The effect of coherency WC/Co phase boundaries on the fracture toughness of the nanocrystalline WC-Co cemented carbides is studied by MD simulation method. The simulation results show that the nanocrystalline WC-Co cemented carbides with coherency WC/Co phase boundaries has higher fracture toughness than that without coherency WC/Co phase boundaries. Moreover, the mechanism of why coherency WC/Co phase boundaries can improve the fracture toughness of the nanocrystalline cemented carbides is also investigated. It is found the fact that the separation energy of the coherent WC/Co phase boundary is larger than that of the incoherent WC/Co phase boundaries is the main reason for this excellent mechanical property.
authors.affiliation: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300132, China.|College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China.
authors.forename: Hongxian
authors.initials: H
authors.lastname: Xie
authors.affiliation: College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Song
authors.affiliation: Tianjin Key Laboratory of Materials Laminating Fabrication and Interface control Technology, Hebei University of Technology, Tianjin 300132, China.|Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300132, China.
authors.forename: Fuxing
authors.initials: F
authors.lastname: Yin
authors.affiliation: Tianjin Key Laboratory of Materials Laminating Fabrication and Interface control Technology, Hebei University of Technology, Tianjin 300132, China.|Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300132, China.
authors.forename: Yongguang
authors.initials: Y
authors.lastname: Zhang