Journal
JOURNAL OF MATERIALS SCIENCE
Volume 39, Issue 15, Pages 4829-4834Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/B:JMSC.0000035321.65140.14
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The influence of powder metallurgy pressing procedure on 9% WC reinforced copper matrix composite was investigated, and the fracture surfaces of the composite in different states of process were observed by scanning electron microscope. The mechanism of fracture of the composite was analyzed. The results show that the pressing process apparently influences the properties and microstructure of the composite. The properties improved with processing sequence progression and the microstructure in terms of the distribution of WC particles in the composite became more uniform. The pressing process can improve the bonding at the interface between copper and WC particles and increases the critical stress for crack extension. (C) 2004 Kluwer Academic Publishers.
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