Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 552, Issue -, Pages 427-433Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2012.05.065
Keywords
Tungsten cemented carbides; Spark plasma sintering; Sinter-HIP; Orientation relationship; Mechanical properties
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Funding
- Chinese National Programs for Fundamental Research and Development [2011CB612207]
- National Natural Science Foundation of China [51174009]
- Beijing Natural Science Foundation [2112006]
- State Key Laboratory of Powder Metallurgy of Central South University
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The spark plasma sintering (SPS) and hot isostatic pressing (sinter-HIP) were taken as the representative methods of rapid sintering and liquid-state sintering technologies, respectively, to fabricate the WC-Co cemented carbides. The microstructures and properties of the bulk materials prepared by the two techniques were characterized and compared systematically. It was demonstrated that the big difference in mechanical properties of the cemented carbides prepared by SPS and sinter-HIP depends on the configuration of WC and Co phases and the WC/Co orientation relationship, which result from the intrinsic features of the sintering technologies. The mechanisms for the excellent properties obtained in the cemented carbides prepared by sinter-HIP were proposed, based on which the favorable microstructures and optimized processing methods concerning liquid-state sintering may be developed. (c) 2012 Elsevier B.V. All rights reserved.
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