Strengthening zones in the Co matrix of WC-Co cemented carbides
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For conventional structural and tool materials, in particular WC-Co cemented carbides, hardness and wear-resistance can usually be increased only at the expense of toughness and strength. For the first time we have achieved a dramatically increased combination of hardness, wear-resistance, fracture toughness and strength as a result of precipitation of extremely fine nanoparticles in the cobalt binder of cemented carbides. These nanoparticles are similar to 3 nm in size, coherent with the Co matrix and consist of a metastable phase. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
CitationKonyashin, I. [et al.]. Strengthening zones in the Co matrix of WC-Co cemented carbides. "Scripta materialia", 15 Juliol 2014, vol. 83, p. 17-20.