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Influence of mould parameters on the microstructure of cast copper aluminium bronze

Published online by Cambridge University Press:  15 April 2011

I. Cenoz
I. Cenoz*
Affiliation:
Department of Mech. Eng., Energy and Materials, Public University of Navarre, Spain. e-mail: isaac.cenoz@unavarra.es
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Abstract

The phases obtained in copper aluminium bronze alloy (Cu-10wt.%Al-2wt.%Fe) cast into a permanent mould were investigated. The parameters examined were the thickness of the graphite coating of the mould and its pre-heated temperature. The phases α and γ2 were detected as well as the metastable phases β′ and γ′. The intermetallics of the Fe-Al system were obtained in various stoichiometric compositions. The different cooling rates of the casting led to two mechanisms of transformation into α-phase grains out of the unstable β-phase, one being nucleation and growth producing needle-shaped grains, the other exhibiting a massive transformation into spherical grains.

Keywords

Aluminium bronzemetallographycoppernodular iron mouldBronze d’aluminiummétallographiecuivremoule en fonte nodulaire
Type
Research Article
Information
Metallurgical Research & Technology , Volume 107 , Issue 9 , October 2010 , pp. 387 - 392
Copyright
© EDP Sciences

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References

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