Microstructure and Mechanical Properties of WC-Co-Ti(C0.5, N0.5)-Mo Cemented Carbides

被引：0
作者：
G. Z. Sui
M. F. Gong
X. H. Wang
X. Q. Xia
D. Y. Mo
J. Dusza
机构：
[1] Electromechanical Engineering Institution,
[2] Lingnan Normal University,undefined
[3] Institute of Materials Research,undefined
[4] Slovak Academy of Sciences,undefined
[5] Additive Manufacturing Center for Mass Customization Production,undefined
[6] National Taipei University of Technology,undefined
来源：
Strength of Materials | 2022年 / 54卷
关键词：
cemented carbides; WC-Co-Ti(C; N; )-Mo; microstructure; mechanical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper reports the synthesis and properties of WC-Co-Ti(C0.5, N0.5)-Mo cemented carbides with various compositions by employing powder metallurgy processing technology. The effect of adding Mo to cemented carbides on their microstructure and mechanical properties is investigated. The volume shrinkage, porosity, microstructure characteristics, hardness, and indentation toughness are examined by analytical balance, indentation method, scanning electron microscope, and X-ray diffractometer, respectively. By adding 0.5 weight percent Mo to cemented carbides, the density and hardness can be increased to 14.12 g/cm3 and 1804.56 kgf/mm2, respectively, while the indentation fracture toughness remains at a tolerable level of approximately 7.6 MPa·m1/2. Furthermore, the addition of Mo to the WC-Co-Ti(C0.5, N0.5) cemented carbides can effectively inhibit Co loss, reduce microdefects in the systems, and improve the microstructure.
引用
收藏
页码：473 / 482
页数：9
相关论文
共 57 条
  • [1] Exner H(1979)Physical and chemical nature of cemented carbides Int. Mater. Rev. 24 149-173
  • [2] Roebuck B(1988)Deformation and fracture processes and the physical metallurgy of WC–Co hardmetals Int. Mater. Rev. 33 90-112
  • [3] Almond E(2013)Development of TiCN-based cermets: mechanical properties and wear mechanism Int. J. Refract. Met. H. 39 78-89
  • [4] Peng Y(2017)Wear resistance of iron matrix composites reinforced by mixed-type particles J. Mater. Eng. 45 62-67
  • [5] Miao H(2005)Effect of tin content on microstructures and mechanical properties of Ti(C, N)/NiCr cermets Acta Metall. Sin. 41 1121-1126
  • [6] Peng Z(2016)Molecular dynamics simulation of the diffusion behaviour between Co and Ti and its effect on the wear of WC/Co tools when titanium alloy is machined Ceram. Int. 42 17754-17763
  • [7] Cao X(2020)Relation between the nitrogen gas pressure and structure characteristics of WC–Ti(C, N)–Co graded cemented carbides J. Alloy. Compd. 831 286-292
  • [8] Jin JF(2007)Kinetics of cobalt gradient formation during the liquid phase sintering of functionally graded WC–Co Int. J. Refract. Met. H. 25 12-14
  • [9] Cao JY(2006)Study on the cutting property of the coated cemented carbide tips with gradient structure Rare Metals and Cemented Carbides 34 257-265
  • [10] Wang QZ(2001)Study of the mechanical properties of TiCN–Wc–Co hardmetals by the interpretation of internal friction spectra Int. J. Refract. Met. H. 19 168-172
123456