MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
High Temperature Deformation of ZrC Particulate-Reinforced Nb-Mo-W Composites
Y. TanC. L. MaR. TanakaJ.-M. Yang
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JOURNALS FREE ACCESS

2006 Volume 47 Issue 6 Pages 1527-1531

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Abstract

The effect of incorporating ZrC particulates on the microstructure and mechanical behavior of Nb-Mo-W ternary alloy prepared through a powder metallurgy route was investigated. Microstructure of the alloy was examined by optical microscopy, X-ray diffractometry and electron probe microanalysis. Tensile tests were conducted from room temperature up to 1773 K. The results revealed that the incorporation of a small amount of ZrC particle is effective in improving the tensile strength and ductility of Nb-Mo-W alloy at elevated temperature. A transition of fracture mode from a brittle transgranular mode to ductile intergranular mode was observed in the composite with ZrC particles at elevated temperature.

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© 2006 The Japan Institute of Metals and Materials
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