Research on Effect of Cr3C2 Addition on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermets

Hai Long Wei; Hai Yan Lei; Guo Xiong Zhong; Hai Zhou Yu; Ping Feng

doi:10.4028/www.scientific.net/AMM.697.46

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 697Research on Effect of Cr3C2 Addition on...

Research on Effect of Cr₃C₂ Addition on Microstructure and Mechanical Properties of Ti(C,N)-Based Cermets

Abstract:

Four Ti (C,N)-based cermets with Cr₃C₂ content of 0.3%, 0.6%, 0.9% and 1.2 % in mass ratio were sintered in vacuum at 1430oC, 1450oC, 1465oC and 1480oC. The mechanical properties of the specimens were determinted and microstructures were observed using the scanning electron microscope (SEM) to study the effect of Cr₃C₂ content on mechanical properties and microstructure. The results show that the four Ti (C,N)-based cermets sintered at 1465oC have the best overall mechanical properties; and among them, the cermet with 0.6% Cr₃C₂ has the best overall mechanical properties, i.e. transverse rupture strength (TRS) 1967MPa, hardness 1556HV and fracture toughness (K_IC) 9.5MPa.m^1/2. With the increase of Cr₃C₂ content, the black core volume fraction firstly increases and then decreases, the white core decreases in a progressive and continuous manner, the rim phase firstly increases and then decreases, the binder phase firstly decreases and then increases.

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Periodical:

Applied Mechanics and Materials (Volume 697)

Pages:

46-50

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.697.46

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Online since:

November 2014

Authors:

Hai Long Wei, Hai Yan Lei, Guo Xiong Zhong, Hai Zhou Yu, Ping Feng

Keywords:

Chromium Carbide, Mechanical Property, Microstructure, Ti(c,n)-based Cermet

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