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The Effects of Powder Composition on Microstructure and Properties of Hot-Pressed Matrix Materials for Sintered Diamond Tools

  • Dorota TyralaEmail author
  • Andrzej Romanski
  • Janusz Konstanty
Article
  • 35 Downloads

Abstract

The main objective of this investigation was to determine the effects of powder composition on microstructure and properties of iron-base materials used as matrices in sintered metal–diamond composites. Ball-milled Fe-Ni-Cu-Sn-C, Fe-Ni-Cu-Sn-C-Al2O3 and Fe-Ni-Cu-Sn-C-Al4C3 powders were tested. The powders were consolidated a virtually pore-free condition by the hot press route. Irrespective of their chemical composition, they were held for 3 min at 900 °C and 25 MPa. The as-sintered (micro-)structures were examined by scanning electron microscopy (SEM) and x-ray diffraction (XRD). All materials showed fine-grained microstructures and significant strengthening due to a martensitic transformation.

Keywords

ball milling diamond tools hot pressing microstructure 

Notes

Acknowledgments

The work was supported by AGH-University of Science and Technology through the Contract No. 16.16.110.663.

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Copyright information

© ASM International 2019

Authors and Affiliations

  • Dorota Tyrala
    • 1
    Email author
  • Andrzej Romanski
    • 1
  • Janusz Konstanty
    • 1
  1. 1.Faculty of Metals Engineering and Industrial Computer ScienceAGH University of Science and TechnologyKrakówPoland

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