Strengthening zones in the Co matrix of WC–Co cemented carbides

Strengthening zones in the Co matrix of WC–Co cemented carbides

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...

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Bibliographic Details
Published in:Scripta materialia Vol. 83; pp. 17 - 20
Main Authors: Konyashin, I., Lachmann, F., Ries, B., Mazilkin, A.A., Straumal, B.B., Kübel, Chr, Llanes, L., Baretzky, B.
Format: Journal Article Publication
Language:English
Published: Elsevier Ltd 15-07-2014
Subjects:
AGE
ALLOYS
Carbides
Carburs
Cemented carbides
Cobalt
Enginyeria dels materials
Fracture toughness
GRADES
HARDMETALS
HARDNESS
MICROSTRUCTURE
Nanoparticles
Nanoprecipitates
Precipitation
REINFORCED BINDER
Strength
Toughness
TUNGSTEN CARBIDE
Àrees temàtiques de la UPC
Toughness
Cemented carbides
Nanoprecipitates
Strength
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Summary: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 ∼3nm in size, coherent with the Co matrix and consist of a metastable phase.
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ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2014.03.026