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Effect of carbon content on the Curie temperature of WC-NiFe cemented carbides
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0003-1102-4342
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-7656-9733
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2019 (English)In: International Journal of Refractory Metals and Hard Materials, ISSN 0263-4368, Vol. 78, p. 27-31Article in journal (Refereed) Published
Abstract [en]

We have investigated the effect of the carbon content on the Curie temperature of a cemented carbide composite material with a Ni-Fe alloy as the binder phase and WC as the hard phase. In the carbon concentration range from 5.72 to 5.83 wt% carbon, which covers the interval where WC coexists with fcc Ni-Fe without other phases (the ‘carbon window’), the Curie temperature rises from 200 to 527 °C. This result indicates the possibility to use the Curie temperature to determine the carbon balance in the system. With thermodynamic calculations and kinetic simulations we can quantitatively establish the correlation between the carbon and tungsten content of the binder phase and the Curie temperature. This strong compositional effect on the Curie temperature is quantitatively very different from the conventional Co-based cemented carbides, with Curie temperatures of about 950–1050 °C.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 78, p. 27-31
Keywords [en]
Alternative binder, Carbon window, Cemented carbide, Curie temperature, Hard metals, Binary alloys, Binders, Carbide tools, Carbides, Cobalt compounds, Iron alloys, Nickel alloys, Carbon concentrations, Cemented carbide composites, Cemented carbides, Compositional effects, Effect of carbons, Kinetic simulation, Thermodynamic calculations, Temperature
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-236334DOI: 10.1016/j.ijrmhm.2018.08.010ISI: 000451489300003Scopus ID: 2-s2.0-85052282006OAI: oai:DiVA.org:kth-236334DiVA, id: diva2:1262154
Note

QC 20181109

Available from: 2018-11-09 Created: 2018-11-09 Last updated: 2020-01-24Bibliographically approved
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Hedström, PeterForsberg, AnnikaStröm, Valter

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