scholarly journals Effect of bimodal WC particle size and binder composition on the morphology of WC grains in WC–Co–Ni3Al cemented carbides

2021 ◽  
Vol 12 ◽  
pp. 1747-1754
Author(s):  
Yingbiao Peng ◽  
Tao Li ◽  
Jianzhan Long ◽  
Haohan Li ◽  
Bizhi Lu ◽  
...  
Keyword(s):  
Particle Size ◽  
Cemented Carbides ◽  
Binder Composition

Effect of Binder Composition on WC Grain Growth in Cemented Carbides

2015 ◽  
Vol 98 (11) ◽  
pp. 3596-3601 ◽  
Author(s):  
Maxime Pellan ◽  
Sabine Lay ◽  
Jean-Michel Missiaen ◽  
Susanne Norgren ◽  
Jenny Angseryd ◽  
...  
Keyword(s):  
Grain Growth ◽  
Cemented Carbides ◽  
Binder Composition

High Energy Milling of WС-FeСr Cemented Carbide

2019 ◽  
Vol 799 ◽  
pp. 136-141
Author(s):  
Marek Tarraste ◽  
Jakob Kübarsepp ◽  
Kristjan Juhani ◽  
Märt Kolnes ◽  
Mart Viljus
Keyword(s):  
Particle Size ◽  
Ball Mill ◽  
Size Range ◽  
High Energy ◽  
Cemented Carbide ◽  
Cemented Carbides ◽  
Binder Phase ◽  
Metal Powders ◽  
Powder Mixtures ◽  
High Energy Milling

During production of cemented carbides hard and brittle tungsten carbide (WC) and ductile metal powders (mainly from Fe-group) are milled together. Complete milling results in a Gaussian distribution and narrow particle size range of the milled powder which promote the homogeneity and improve the properties of sintered composites. Cobalt, conventional metal employed in cemented carbides, possesses good comminution characteristics with WC powder. However, its toxicity and fluctuating price pushes researchers to find suitable alternatives and Fe-based alloys have shown most promising results. Cemented carbides with the Fe-Cr system as metal binder phase have potential to perform better than regular WC-Co composites in corrosive and oxidative environments. The goal of this paper was to prepare uniform cemented carbides powders with relatively high fraction of stainless Fe-Cr steel. To achieve a uniform powder mixture is a challenge at high ductile steel fraction. High energy milling (HEM) is a powerful technique for achieving (ultra) fine powder mixtures with narrow powder size range. HEM was carried out in a novel high energy ball mill RETSCH Emax. Milling in tumbling ball mill, which is the most widely used method, was employed for reference. Prepared powder mixtures were characterised in terms of particle size, size distribution and shape. In addition, powder mixtures were consolidated via spark plasma sintering to evaluate the effect of the milling method and the duration on the microstructure of final cemented carbide.

Influence of Tungsten-Carbide and Cobalt on Tool Wear in Cutting of Cemented Carbides with Polycrystalline Diamond Tool

2013 ◽  
Vol 7 (4) ◽  
pp. 433-438 ◽  
Author(s):  
Junsuke Fujiwara ◽  
◽  
Keisuke Wakao ◽  
Takeshi Miyamoto ◽  
Keyword(s):  
Particle Size ◽  
Tool Wear ◽  
Tungsten Carbide ◽  
Diamond Tool ◽  
Polycrystalline Diamond ◽  
Cemented Carbides ◽  
Large Particles

The influence of the tungsten-carbide (WC) particle size and Co contents of cemented carbides on polycrystalline diamond tool wear during turning was investigated experimentally. The main results obtained were as follows. (1) Tool wear increased with increasing Co content. (2) It is important to cut off the binder between the WC particles and the Co. (3) Cemented carbides containing small WC particles are more effective than cemented carbides containing large particles.

Preparation and mechanisms of cemented carbides with ultrahigh fracture strength

2015 ◽  
Vol 48 (4) ◽  
pp. 1254-1263 ◽  
Author(s):  
Xingwei Liu ◽  
Xiaoyan Song ◽  
Haibin Wang ◽  
Xuemei Liu ◽  
Xilong Wang ◽  
...  
Keyword(s):  
Particle Size ◽  
Fracture Strength ◽  
Growth Inhibitor ◽  
Mean Value ◽  
Crystallographic Analysis ◽  
Cemented Carbides ◽  
Composite Powders ◽  
Grain Growth Inhibitor ◽  
Carbon Concentrations

WC–Co cemented carbides were prepared by liquid-state sintering ofin situsynthesized composite powders with a constant Co content but different carbon concentrations, and with different size scales of VC particles as grain-growth inhibitor. With an optimized carbon addition and doping with microscale VC particles, an ultrahigh fracture strength with a mean value above 5000 MPa was achieved for cemented carbides. By detailed crystallographic analysis of the configuration and interactions of the WC, Co and VC phases, the effects of VC particle size on the microstructure and mechanical properties of cemented carbides are identified. The mechanisms by which the fracture strength depends on the VC particle size contain the effects on the changes in Co binder distribution, atomic matching at the phase boundary and WC grain size. The dominant factors for ultrahigh fracture strength of cemented carbides are proposed.

scholarly journals Effect of Metallic Binder Composition on Microstructure and Hardness of (W,Ti)C Cemented Carbides

2007 ◽  
Vol 14 (3) ◽  
pp. 208-214 ◽  
Author(s):  
Walid M. Daoush ◽  
Kyong-H. Lee ◽  
Hee-S. Park ◽  
Jong-J. Jang ◽  
Soon-H. Hong
Keyword(s):  
Cemented Carbides ◽  
Metallic Binder ◽  
Binder Composition
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