TY - CONF A1 - Le Quilliec, G. A1 - Leroy, R. A1 - Richard, C. A1 - Woydt, Mathias A1 - Morandeau, A. T1 - Comparison of the life-span of NbC-Co and WC-Co inserts during different machining operations on 100Cr6 (SAE 52100) bearing steel T2 - Proceedings of the International Symposium on Wear Resistant Alloy for the Mining and Processing Industry N2 - The aim of the study presented in this paper is to highlight the potential of niobium carbide cutting tool inserts for machining and to compare their performance to commercially available tungsten carbide inserts. In this work, a comparison between a conventional Wc-Co insert and NbC-Co inserts was carried out under hard machining conditions on specimens made of 100Cr6 bearing steel grade (SAE 52100). T2 - International Symposium on Wear Resistant Alloys for the Mining and Processing Industry CY - Sao Paulo, Brazil DA - 04.05.2015 KW - Niobium carbide KW - Cobalt KW - Fe3Al KW - Inserts KW - Cutting tools KW - Wear KW - Turning PY - 2018 SN - 978-0-692-05382-9 SP - 535 EP - 545 AN - OPUS4-44207 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Woydt, Mathias T1 - Dry turning with niobium carbide based tools N2 - The performance of straight and uncoated NbC grades under dry machining of 100Cr6 (SAE 52100), X90CrMoV18 (AISI 440B), 42CrMoV4 Q&T (AISI 4140), C45E (SAE 1045H) and grey cast iron GG35 in comparison to commercially available WC-xxCO and WC-xxCo-zMeC grades will be summarized. T2 - International Conference on Powder Metallurgy & Particulate Materials (POWDERMET 2018) CY - San Antonio, TX, USA DA - 17.06.2018 KW - Niobium carbide KW - Cutting tools KW - Hardness PY - 2018 AN - OPUS4-45389 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Genga, R. M. A1 - Polese, C. A1 - Glaser, D. A1 - Woydt, Mathias A1 - Cornish, L. A. T1 - Mechanical and machining properties of laser peened NbC cermets during face-milling of grey cast iron N2 - In the present work it was shown the improvement of cermet tool life which can be achieved by refinement of the microstructure to give increased hardness and by introducing resisdual stress by laser peening for increased toughness. T2 - 7th International Conference on Laser Peening and Related Phenomena CY - Singapore, Malaysia DA - 17.06.2018 KW - NbC cermets KW - Cutting tools KW - Hardness PY - 2018 AN - OPUS4-45849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Woydt, Mathias A1 - Huang, S. A1 - Vleugels, J. A1 - Mohrbacher, H. T1 - Niobium carbide NbC as cutting tool material and for wear protection N2 - The present paper illuminates the metallurgical progress on niobium carbide based hard metal developments, which are characterized by: a.) the substitution of cobalt binder by nickel, b.) the change from SPS to conventional sintering and c.) by switching from lab to pilot scale. The toughness was increased in the frame of these develop¬ments without loosening the hardness level. Stoichiometric and sub-stoichiometric, submicron NbC powders were used. The hardness-toughness profile of NbC grades match those of WC and cermet grades. Apart from the aforementioned parameters, the properties depend from the powder processing and sintering conditions. The functional profile of NbC and WC grades bonded by cobalt and nickel are benchmarked by 4-point bending strength, elastic moduli and hot hardness until 1000°C, dry sliding wear (T= 22/400°C; v= 0,1-10 m/s), abrasive wear (G65) and cutting performances under emulsion and coolant-free turning and milling against different alloys (C60, 100Cr6, 42CrMo4, X90CrMoV18, 300WA, GG35). T2 - 42nd International Conference and Exposition on Advanced Ceramics and Composites CY - Daytona Beach, FL, USA DA - 21.01.2018 KW - NbC KW - Cutting tools KW - Wear PY - 2018 AN - OPUS4-45854 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -