A Study on Deformation and Removal Mechanisms of Tungsten Carbide Using Nanoindentation

2007 ◽  
Vol 329 ◽  
pp. 385-390 ◽  
Author(s):  
Han Huang ◽  
Rudy Irwan ◽  
Tsunemoto Kuriyagawa
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Material Removal ◽  
Critical Conditions ◽  
Full Potential ◽  
Removal Mechanisms ◽  
Microstructure Of The Material ◽  
Cemented Tungsten Carbide

Nanoindentation was used to study the deformation and removal mechanisms of cemented tungsten carbide. It was found that the microstructure of the material has significant influences on its mechanical properties, which determines the critical conditions for damage-free nanogrinding. The results also indicated that when material removal events occur at nanometric scale, such influences should be taken into account for gaining the full potential of nanogrinding.

scholarly journals Role of carbon addition on the microstructure and mechanical properties of cemented tungsten carbide and steel bilayer

2017 ◽  
Vol 92 (9-12) ◽  
pp. 3363-3371 ◽  
Author(s):  
O . J. Ojo-kupoluyi ◽  
S . M. Tahir ◽  
M. A. Azmah Hanim ◽  
B. T. H. T. Baharudin ◽  
K. A. Matori ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Carbon Addition ◽  
Microstructure And Mechanical Properties ◽  
Cemented Tungsten Carbide

scholarly journals Electrical Discharge Machinable Ytterbia Samaria Co-Stabilized Zirconia Tungsten Carbide Composites

Ceramics ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 408-421
Author(s):  
Maximilian Rapp ◽  
Andrea Gommeringer ◽  
Frank Kern
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Tungsten Carbide ◽  
Electrical Discharge ◽  
Material Removal ◽  
Removal Mechanism ◽  
Composite Ceramics ◽  
Material Removal Mechanism ◽  
Stabilized Zirconia ◽  
Electrically Conductive

Composite ceramics of stabilizer oxide coated ytterbia-samaria costabilized zirconia (1.5Yb1.5Sm-TZP) and 24–32 vol% of tungsten carbide as an electrically conductive dispersion were manufactured by hot pressing at 1300–1400 °C for 2 h at 60 MPa pressure. The materials were characterized with respect to microstructure, phase composition, mechanical properties and electrical discharge machinability by die sinking. Materials with a nanocomposite microstructure and a strength of up to 1700 MPa were obtained. An attractive toughness of 6–6.5 MPa√m is achieved as 40–50% of the zirconia transformed upon fracture. The materials show fair material removal rates of 1 mm³/min in die sinking. Smooth surfaces indicate a material removal mechanism dominated by melting.

A Grinding Protocol for the Fabrication of Micro/Meso Aspheric Moulds for Optic Applications

2012 ◽  
Vol 565 ◽  
pp. 111-116
Author(s):  
Han Huang
Keyword(s):  
Tungsten Carbide ◽  
Brittle Materials ◽  
Grinding Process ◽  
Grinding Wheels ◽  
Removal Mechanisms ◽  
Hard And Brittle Materials ◽  
Cemented Tungsten Carbide

This paper summarised our recent results on the development of grinding technologies for the fabrication of aspheric components at micro/meso scales made of cemented tungsten carbide. Based on these results, a grinding protocol was proposed for the fabrication of aspheric moulds. The protocol includes the understanding of deformation and removal mechanisms of hard and brittle materials involved in grinding, the preparation of grinding wheels, the compensation of profiling errors and the optimisation of the grinding process.

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