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Dense Co- and Ni-bonded Ti(C0.6T0.4) matrix cermets with secondary carbides, i.e., WC, Mo2C, and NbC, were prepared by liquid phase sintering in vacuum for 60 min at temperatures ranging from 1410 to 1490 degrees C. The detailed microstructural and phase analysis was performed by scanning electron microscopy, electron probe microanalysis, and X-ray diffraction. The effect of sintering temperature on the microstructure, mechanical properties, and machining performance of cermets was investigated. The results show that sintering temperature has a significant impact on the microstructural characteristics of (Ti, W, Mo, Nb)(C, N) -(Co, Ni) cermets. The total carbon content of cermets decreases with increasing the sintering temperature and a carbon-deficient phase (M6C) is observed in the cermet sintered at 1490 degrees C. The cermets sintered at temperatures of up to 1470 degrees C are composed of an fcc solid solution metal binder and two types of core-rim structured grains, i.e., cubic carbide solution and cubic Ti(C, N) solution phases. The best machining performance on continuous/interrupted turning is found in the cermet sintered at 1470 degrees C because of an optimum combination of hardness and transverse rupture strength.
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RARE METAL MATERIALS AND ENGINEERING
ISSN: 1002-185X
CN: 61-1154/TG
Year: 2021
Issue: 4
Volume: 50
Page: 1179-1186
0 . 5 3 7
JCR@2021
0 . 6 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:142
JCR Journal Grade:4
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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