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


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.


ball milling diamond tools hot pressing microstructure 



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


  1. 1.
    W. Tillmann, C. Kronholz, M. Ferreira, A. Knote, W. Theisen, and P. Schütte, Comparison of Different Metal Matrix Systems for Diamond Tools Fabricated by New Current Induced Short-Time Sintering Processes, in PM2010 World Congress – Diam. Tools. Manuscr. Ref. by Dr José M Sanchez. CEIT, Spain, 2010Google Scholar
  2. 2.
    A. Romanski, T. Tokarski, and D. Tyrala, Sintered Fe-Ni-Cu-Sn-C Alloys Made of Ball-Milled Powders, Arch. Metall. Mater., 2014, 59, p 947–950CrossRefGoogle Scholar
  3. 3.
    K.J. An, Modeling of Densification During Hot Pressing of Fe-Cu-Co-Ni-W-Sn Powder Mixture, Mater. Trans., 2011, 52, p 1334–1337CrossRefGoogle Scholar
  4. 4.
    J. Konstanty, Powder Metallurgy Diamond Tools, Metal Powders Technology, Elsevier, Oxford, 2005Google Scholar
  5. 5.
    J. Konstanty and D. Tyrala, Wear Mechanism of Iron-Base Diamond-Impregnated Tool Composites, Wear, 2013, 303, p 533–540CrossRefGoogle Scholar
  6. 6.
    Anon, A New Generation of Powders for the Diamond Tool Industry, Marmo Mach. Int., 1997, 18, p 156–157Google Scholar
  7. 7.
    M. Bonneau, NEXT and NEXT Pre-mixed Powders, Diam. Appl. Technol., 1999, 18, p 45–52Google Scholar
  8. 8.
    Anon, Keen - A New Concept in Prealloyed Powders, Ind. Diam. Rev., 2005, 3, p 45–47Google Scholar
  9. 9.
    I.E. Clark and B.J. Kamphuis, Cobalite HDR - a New Prealloyed Matrix Powder for Diamond Construction Tools, Ind. Diam. Rev., 2002, 2, p 177–182Google Scholar
  10. 10.
    B.J. Kamphuis and A. Serneels, Cobalt and Nickel Free Bond Powder for Diamond Tools: Cobalite CNF, Ind. Diam. Rev., 2004, 64, p 26–32Google Scholar
  11. 11.
    M. del Villar, P. Muro, J.M. Sanxhes, I. Iturriza, and F. Castro, Consolidation of Diamond Tools Using Cu-Co-Fe Based Alloys as Metallic Binders, Powder Metall., 2001, 44, p 82–90CrossRefGoogle Scholar
  12. 12.
    N.C. Polvorosa, G. Pena, A. Fayanas, I. Guruceaga, C. Luno-Bilbao, and I. Iturriza, Bond Development, Diamond Stability and Wear Behavior in Diamond Impregnated Tools for Stone Cutting, in 5th International Conference on Powder Metallurgy in Asia, 19–21 Feb 2019, Pune, India, p 103–105Google Scholar
  13. 13.
    M. del Villar, J. Echeberria, I. Iturriza, and F. Castro, Sintering/HIPping of Cobalt Powders for Diamond Tools, in Proceedings 1998 PM World Congress and Exhibition, vol 4, Granada, Spain, 18–22 October, 1998, p 475–480Google Scholar
  14. 14.
    J. Konstanty, D. Tyrała, A. Radziszewska, and W. Ratuszek, Properties of Iron-Base Materials Manufactured from Premixed Powders by the Hot Press Process. in Proceedings of the 5th International Powder Metallurgy Conference, 8–12 October, 2008, Ankara, Turkey, p 149–158Google Scholar
  15. 15.
    J. Konstanty, Current Trends and Advances in the Fabrication and Application of Diamond Tools, Diam. Appl. Technol., 2019, 97, p 24–36Google Scholar
  16. 16.
    J. Konstanty, T.F. Stephenson, and D. Tyrala, Novel Fe-Ni-Cu-Sn Matrix Materials for the Manufacture of Diamond Impregnated Tools, Diam. Tool. J., 2011, 3, p 26Google Scholar
  17. 17.
    J. Konstanty, A. Romanski, and D. Tyrala, Ferrous Ball-Milled Powders for the Fabrication of Sintered Diamond Tools, Adv. Mater. Res., 2014, 1052, p 514–519CrossRefGoogle Scholar
  18. 18.
    K. Geels, The True Microstructure of Materials, Structure, 2000, 35, p 5–13Google Scholar

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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