A dual composite of WC-Co

Hardness, fracture toughness, and wear resistance are strongly inter-related properties of cemented tungsten carbide. Higher hardness usually dictates higher wear resistance but at the cost of fracture toughness. A new dual composite of WC-Co, named DC carbide, is reported in this article. The new,...

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Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 1999-12, Vol.30 (12), p.3231-3238
Main Authors: ZHIGANG FANG, LOCKWOOD, G, GRIFFO, A
Format: Article
Language:English
Subjects:
Applied sciences
COBALT
COMPOSITE MATERIALS
CORRELATIONS
Cross-disciplinary physics: materials science
rheology
CUTTING TOOLS
Electron microscopes
Exact sciences and technology
FRACTURE PROPERTIES
Fracture toughness
Friction, lubrication, and wear
Grain size
MATERIALS SCIENCE
Metallurgy
Metals. Metallurgy
PARTICULATES
Physics
Treatment of materials and its effects on microstructure and properties
TUNGSTEN CARBIDES
WEAR RESISTANCE
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Summary:Hardness, fracture toughness, and wear resistance are strongly inter-related properties of cemented tungsten carbide. Higher hardness usually dictates higher wear resistance but at the cost of fracture toughness. A new dual composite of WC-Co, named DC carbide, is reported in this article. The new, hybrid, particulate composite material has higher fracture toughness than conventional WC-Co material at equivalent wear resistance. Moreover, it has higher wear resistance at equivalent fracture toughness when compared to tool steels. The improved properties are achieved by the composite microstracture that maximizes mean free path (MFP) between hard reinforcement particles. The new composite material is also unique in that the reinforcement phase is a composite material in and of itself. [PUBLICATION ABSTRACT]
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-999-0233-3