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

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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.

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Acknowledgments

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

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Authors and Affiliations

  1. Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Mickiewicz Avenue 30, 30-059, Kraków, Poland

    Dorota Tyrala, Andrzej Romanski & Janusz Konstanty

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  1. Dorota Tyrala
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  2. Andrzej Romanski
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  3. Janusz Konstanty
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Correspondence to Dorota Tyrala.

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Tyrala, D., Romanski, A. & Konstanty, J. The Effects of Powder Composition on Microstructure and Properties of Hot-Pressed Matrix Materials for Sintered Diamond Tools. J. of Materi Eng and Perform 29, 1467–1472 (2020). https://doi.org/10.1007/s11665-019-04485-2

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  • DOI: https://doi.org/10.1007/s11665-019-04485-2

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