Abstract
This article presents the investigations of durability of the cutting tools (insert cutting edges) made of the nanocrystalline sintered carbides. Cutting insert edges were sintered using the Pulse Plasma Sintering (PPS) method elaborated at the Department of Materials Science Warsaw University of Technology. This article contains the results of comparative investigations of durability of the cutting edges made of WC-5wt% Co nanocrystalline cemented carbides with the TaC-NbC or Cr3C2 growth inhibitor and without it sintered by the PPS method, and cutting edges made of a standard cemented carbides of the same chemical composition (obtained by the Hot Pressing (HP) method) during turning the EN-36CrNiMo4 (PN-36HNM) toughening steel. The nanocrystalline cemented carbides have much higher hardness and smaller average grain size than standard carbides with the same chemical composition. For these reasons, cutting inserts made of the nanocrystalline cemented carbides particularly with TaC-NbC inhibitor have significantly greater hardness and from here greater resistance to wear and greater durability during machining the toughening steel.
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Acknowledgements
The authors acknowledge the financial support of the Ministry of Science and Higher Education (Polish State Committee for Scientific Research, contract No. N N503 147734). The work was also performed from financial resources of a research project No. 02/22/DSPB/1433 DS. The authors thanks Prof. A. Michalski and Dr. M. Rosinski from Warsaw University of Technology and Dr. K. Jozwiak from Poznan University of Technology for preparation of the samples and for access to apparatus.
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Kupczyk, M.J., Komolka, J., Siwak, P. (2019). Comparative Investigations of Durability of Cutting Edges Made of Nanocrystalline Cemented Carbides with Different Growth Inhibitors. In: Silva, L. (eds) Materials Design and Applications II. Advanced Structured Materials, vol 98. Springer, Cham. https://doi.org/10.1007/978-3-030-02257-0_24
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DOI: https://doi.org/10.1007/978-3-030-02257-0_24
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