Mechanical properties of a hybrid cemented carbide composite

Microstructural effects on the mechanical properties of a hybrid metal matrix composite, double cemented (DC) carbide, have been investigated. DC carbide contains granules of WC/Co cemented carbide in a matrix of cobalt. Overall composite hardness increases with decreased granule cobalt content as w...

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Bibliographic Details
Published in:International journal of refractory metals & hard materials Vol. 19; no. 4; pp. 547 - 552
Main Authors: Deng, Xin, Patterson, B.R, Chawla, K.K, Koopman, M.C, Fang, Z, Lockwood, G, Griffo, A
Format: Journal Article
Language:English
Published: Elsevier Ltd 01.07.2001
Subjects:
Cemented carbide
Hardness
Hybrid composite
Toughness
Wear resistance
Cemented carbide
Toughness
Wear resistance
Hardness
Hybrid composite
ISSN:0263-4368
Online Access:Get full text
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Summary:Microstructural effects on the mechanical properties of a hybrid metal matrix composite, double cemented (DC) carbide, have been investigated. DC carbide contains granules of WC/Co cemented carbide in a matrix of cobalt. Overall composite hardness increases with decreased granule cobalt content as well as with decreased intergranular matrix fraction of cobalt. High-stress abrasive wear resistance also increases with decreased granule cobalt content and matrix fraction. Fracture toughness of the composite increases with increased cobalt matrix fraction and to a lesser extent with increased granule cobalt content. Increased granule size increases both fracture toughness and wear resistance. DC carbide exhibits a superior combination of fracture toughness and high-stress wear resistance than conventional cemented carbide. The combination of toughness and wear resistance in the composite improves with increased granule hardness.
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ISSN:0263-4368
DOI:10.1016/S0263-4368(01)00060-9