A dual composite of WC-Co

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/s11661-999-0233-3· OSTI ID:20005989

Fang, Z; Lockwood, G; Griffo, A

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 microstructure 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.

• Research Organization: Smith International, Inc., Houston, TX (US)
• OSTI ID: 20005989
• Journal Information: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 12 Vol. 30; ISSN MMTAEB; ISSN 1073-5623
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT
COMPOSITE MATERIALS
CORRELATIONS
CUTTING TOOLS
FRACTURE PROPERTIES
PARTICULATES
TUNGSTEN CARBIDES
WEAR RESISTANCE