Effects of Ti(C0.7N0.3) addition on the microstructure and properties of (Ti,W,Ta)C-Mo-Ni cermets
LIN Shaojiang1, CHEN Xiao2, XIONG Weihao2
1. School of Mechanical & Electrical Engineering of Hubei Polytechnic University, Huangshi 435003, China; 2. State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074, China
Abstract:The Ti(C,N)-based cermet materials were prepared by powder metallurgy using (Ti,W,Ta) C and Ti(C0.7N0.3) as hard phase materials. The effect of Ti(C0.7N0.3) additions on the microstructures and properties of (Ti,W,Ta)C-Mo-Ni cermets has been studied. The results indicate that the microstructure of (Ti,W,Ta)C-Mo-Ni cermets consist of black core-grey rim structure and white core-grey rim structure. The black cores is Ti(C0.7N0.3) particle and the white cores is (Ti,W,Ta)C particles. With increasing Ti(C0.7N0.3) addition, black cores increase and the rims become thinner. Adding Ti (C0.7N0.3) solid solution has little effect on the hardness of (Ti,W,Ta)C-Mo-Ni cermets, while the bending strength increases first and then decreases with the increase of Ti(C0.7N0.3). When the Ti(C0.7N0.3) content is 40%, the optimal properties of (Ti,W,Ta)C-Ti(C0.7N0.3)-Mo-Ni cermets is obtained, the hardness (HRA) is 90.3 and the bending strength is 1 748 MPa, respectively.
蔺绍江, 陈肖, 熊惟皓. Ti(C0.7N0.3)对(Ti,W,Ta)C-Mo-Ni系金属陶瓷组织与性能的影响[J]. 粉末冶金材料科学与工程, 2020, 25(1): 11-15.
LIN Shaojiang, CHEN Xiao, XIONG Weihao. Effects of Ti(C0.7N0.3) addition on the microstructure and properties of (Ti,W,Ta)C-Mo-Ni cermets. Materials Science and Engineering of Powder Metallurgy, 2020, 25(1): 11-15.
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