TiC-CoCrFeNi composite was fabricated by mechanical alloying and consequently vacuum hot pressing sintering, and the effects of milling time on the microstructure and mechanical properties of the composite was investigated. The results show that a single-phase solid solution with fcc structure is obtained after milled for 10h of Co, Cr, Fe and Ni powders. TiC and Cr7C3 structured carbides are formed and dispersed in the CoCrFeNi solid solution after hot pressing sintered at 1200℃ for 1h. Milling time has a significant effect on the size and amount of TiC and Cr7C3 structured carbides, which can affect the mechanical properties of the composite. When the milling time reaches 10h, the hardness and yield strength of the composite reach the maximum values of 671HV and 1440MPa, respectively, which is probably attributed to the dramatically increasing of nano-sized TiC in sintered bodies.
王桂芳, 刘忠侠, 张国鹏. 球磨时间对热压烧结制备TiC-CoCrFeNi复合材料微观组织及力学性能的影响[J]. 材料工程, 2019, 47(6): 94-100.
Gui-fang WANG, Zhong-xia LIU, Guo-peng ZHANG. Effect of milling time on microstructure and mechanical properties of TiC-CoCrFeNi composites prepared by hot pressing sintering. Journal of Materials Engineering, 2019, 47(6): 94-100.
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