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In Situ Synthesis of Cr2Nb Reinforced Copper Alloy by Liquid Metallurgy Route

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Abstract:

Cu-8Cr-4Nb alloy with high strength and high thermal conductivity have received a lot of attention over the last decades due to promising role in space application of rocket combustion chamber of reusable launch vehicle. In the present work, the copper alloy is synthesized in induction furnace by liquid metallurgy route wherein elemental powders of chromium and niobium was used added into premelted copper melt under argon atmosphere. The cast product is characterised for hardness, optical, SEM, EDS and XRD. It is possible to produce this alloy with reproducible average hardness of 135 VHN. The precipitate of Cr2Nb showed moderate distribution in and around the grain boundaries of copper with precipitate size varying from 1.33 μm to7.0 μm.

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Periodical:

Materials Science Forum (Volume 710)

Pages:

143-148

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.710.143

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Online since:

January 2012

Authors:

Narendra B. Dhokey, Sriganesh N. Sarve, Harshanand A. Lamsoge

Keywords:

Cr2Nb Precipitate, Cu-8Cr-4Nb, Cu-Cr2Nb Alloy, Liquid Metallurgy

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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