CN 41-1243/TG ISSN 1006-852X
Volume 42 Issue 6
Jan.  2023
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ZHANG Bin, GUO Hongyi. Microstructures and mechanical properties of PCBN materials[J]. Diamond &Abrasives Engineering, 2022, 42(6): 699-704. doi: 10.13394/j.cnki.jgszz.2022.0078
Citation: ZHANG Bin, GUO Hongyi. Microstructures and mechanical properties of PCBN materials[J]. Diamond &Abrasives Engineering, 2022, 42(6): 699-704. doi: 10.13394/j.cnki.jgszz.2022.0078

Microstructures and mechanical properties of PCBN materials

doi: 10.13394/j.cnki.jgszz.2022.0078
  • Received Date: 2022-05-25
  • Rev Recd Date: 2022-07-26
  • The PCBN material was prepared by high temperature and high pressure method at 1 500℃ and different holding times with CBN-TiN-Ti-Al2O3 as the initial raw material. The phase compositions, microstructures, mechanical properties and cutting performance of PCBN under different sintering holding times were discussed. The results show that the holding time has no obvious effect on the phase compositions of PCBN, but it is helpful to improve its crystallinity and to realize its sintering uniformity and densification. When the holding time is 9.00 min, the PCBN material with the best comprehensive performance can be obtained with the relative density of 99.1%, the bending strength of 910.9 MPa, the wear ratio of 7120 and the microhardness of 33.5 GPa. The tool made of this PCBN can process up to 365 die steel parts.

     

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