V Rahimi Dizaji - MSc. Student of Material Science and Engineering, Sharif University of Technology, Tehran, Iran.
H Dalir - MSc. Student of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
M Faghihi Sani - Assistant Professor of Material Science and Engineering, Sharif University of Technology, Tehran, Iran
Z Nemati - Associate Professor of Material Science and Engineering, Sharif University of Technology, Tehran, Iran

In this paper the effects of type and amount of various secondary carbides on the microstructure and cutting performance of Ti(C0.7N0.3)-12Co system have been investigated. Nine model alloys with different amount of WC, Mo2C and Ta0.7Nb0.3C additives were studied using scanning electron microscopy (SEM), Vickers hardness (HV), transverse rupture strength (TRS) and continuous turning tests. Alloys including Mo2C and WC presented finer carbonitride grain structure, as well as higher wear resistance resulting from their higher hardness and highly solution hardened binder phase.

Ti(C,N)-Based Cermets, Secondary Carbides, Vickers Hardness, Cutting Performance, Nose Wear