Effect of Ball-Milling Time on the Microstructure and Mechanical Properties of Submicron Ti(C,N)-Based Cermets

Hui Jun Zhou; Chuan Zhen Huang; Bin Zou; Han Lian Liu; Hong Tao Zhu; Peng Yao; Jun Wang

doi:10.4028/www.scientific.net/KEM.589-590.584

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 589-590Effect of Ball-Milling Time on the Microstructure...

Effect of Ball-Milling Time on the Microstructure and Mechanical Properties of Submicron Ti(C,N)-Based Cermets

Abstract:

In this study, titanium carbonitride (Ti(C,N)) based cermets were prepared by submicron particles, sintered in a vacuum and hot-pressing furnace. And the effect of different ball-milling time (36 h, 48 h, 60 h and 72 h, respectively, mostly aimed for mixing) on the mechanical properties of Ti(C,N)-based cermets, including transverse rupture strength (TRS), Vickers hardness (HV20), fracture toughness (K_IC) and microstructure were investigated. The results showed that the TRS, hardness and fracture toughness were all improved with an increase in ball-milling time (not more than 60 h). Scanning electron microscopy (SEM) investigations on the microstructure of cermets with different ball-milling time revealed that the compound powders were not very well-distributed as a whole and there were coarse hard phase grains, but the microstructure was very homogeneous in parts, and the microstructure of cermets with a ball-milling time of 60 h is relatively more homogeneous. So a refinement to Ti(C,N) raw particles is needed in later studies.

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Periodical:

Key Engineering Materials (Volumes 589-590)

Pages:

584-589

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.589-590.584

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Online since:

October 2013

Authors:

Hui Jun Zhou, Chuan Zhen Huang, Bin Zou, Han Lian Liu, Hong Tao Zhu, Peng Yao, Jun Wang

Keywords:

Ball-Milling Time, Hot-Pressing Sintering, Mechanical Property, Microstructure, Ti(c,n)-based Cermet

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