Metal Oxycarbides as Cutting Tool Materials

1976 ◽  
Vol 98 (1) ◽  
pp. 279-286 ◽  
Author(s):  
W. W. Carson ◽  
C. L. Leung ◽  
N. P. Suh
Keyword(s):  
Chemical Stability ◽  
Cutting Tool ◽  
Chemical Interaction ◽  
Free Energies ◽  
Wear Process ◽  
Tool Materials ◽  
Coated Tools ◽  
Free Energy Of Formation ◽  
Cemented Carbide Tools ◽  
Cutting Tool Materials

The role of chemical stability of cutting tool materials in tool wear was investigated by studying the wear characteristics of titanium oxycarbides. The oxycarbides TiC0.25O0.75, TiC0.5O0.5, TiC0.6O0.4, and TiC0.75O0.25 were produced by solid state interdiffusion of TiO and TiC. Their hardnesses and lattice spacings were determined as functions of their chemical composition. The chemical interaction of these oxycarbides with steel was investigated by diffusion couple experiments. Then commercially available cemented carbide tools were coated with TiC0.5O0.5 and TiC0.75O0.25 by RF diode sputtering. The wear resistance of these coated tools was determined by cutting tests. The wear rate of these oxycarbide coated tools was comparable to that of a TiC coated tool, although the free energies of formation of oxycarbides were lower and their hardnesses comparable. It is, therefore, concluded that while the data on free energy of formation and hardness can be useful in the initial screening steps of tool materials, the kinetics of the wear process needs to be more fully understood to define the chemical stability of tool materials in a cutting environment.

Research on Tool Materials for High-Speed Cutting

2014 ◽  
Vol 644-650 ◽  
pp. 4792-4794 ◽  
Author(s):  
Guo Ru Xie ◽  
Wei An Xie
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Research Direction ◽  
Advanced Manufacturing ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Coated Tools ◽  
Development Direction ◽  
Cutting Tool Materials

The high-speed cutting is an advanced manufacturing technology with efficient, high quality and low consume, it is also the development direction of cutting. The concept and characteristic of high-speed cutting is discussed. The performance and application of the major tool materials (such as ceramic cutting tools, diamond tools, CBN tools, coated tools) for high-speed cutting is described. At last, the paper discusses the developing prospect and research direction for high-speed cutting tool materials.

Cutting tool materials III

Metal Cutting ◽  
2000 ◽  
pp. 227-249 ◽  
Author(s):  
Edward M. Trent ◽  
Paul K. Wright
Keyword(s):  
Cutting Tool ◽  
Tool Materials ◽  
Cutting Tool Materials

Mechanical Properties and Microstructure of Self-Lubricating Ceramic Cutting Tool Materials

2004 ◽  
Vol 471-472 ◽  
pp. 221-224 ◽  
Author(s):  
Jian Xin Deng ◽  
Tong Kun Cao ◽  
Jia Lin Sun
Keyword(s):  
Mechanical Properties ◽  
Cutting Tool ◽  
Solid Lubricants ◽  
Polished Surface ◽  
Ceramic Tool ◽  
Tool Materials ◽  
Ceramic Cutting Tool ◽  
Micro Cracks ◽  
The Difference ◽  
Cutting Tool Materials

Al2O3/TiC ceramic tool materials with the addition of solid lubricants such as BN and CaF2 were produced by hot pressing. Effect of the solid lubricants on the microstructure and mechanical properties has been studied. Results showed that AlN phase resulted from the reaction of Al2O3 with BN was formed in Al2O3/TiC/BN composite after sintering. Significant micro-cracks resulted from the residual stress owing to the difference in the thermal expansion coefficient were found on the polished surface, and caused large mechanical properties degradation. While Al2O3/TiC/CaF2 composite showed higher flexural strength, fracture toughness, and hardness compared with that of Al2O3/TiC/BN composite owing its porosity absent and finer microstructure.

Microstructure-Level Model for the Prediction of Tool Failure in Coated WC-Co Cutting Tool Materials During Intermittent Cutting

2007 ◽  
Vol 129 (5) ◽  
pp. 893-901 ◽  
Author(s):  
Sunghyuk Park ◽  
Shiv G. Kapoor ◽  
Richard E. DeVor
Keyword(s):  
Cutting Tool ◽  
Machining Process ◽  
Thermal Boundary Conditions ◽  
Machining Process Simulation ◽  
Coated Tools ◽  
Model Predictions ◽  
Level Model ◽  
Interrupted Turning ◽  
Intermittent Cutting ◽  
Cutting Tool Materials

A model to predict failure of coated WC-Co grades due to chipping in intermittent cutting via microstructure-level finite element machining process simulation is presented and applied to various coated WC-Co tools. Coated tools were examined for the characterization and simulation of their microstructures. Model predictions of failure due to chipping for coated WC-Co systems were validated by continuous machining tests. In order to simulate cyclic loading conditions during intermittent cutting, mechanical and thermal boundary conditions were applied during cutting phases and removed during noncutting phases. Interrupted turning experiments were conducted to validate the model, and the results showed that the predictions agreed well with the observations from the experiments. The paper includes the application of this model to a problem of WC-Co grade design.

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