Development of Microstructure in Silicon-Aluminum-Bronze

J. Iqbal, F. Ahmed, F. Hasan

Abstract


The aim of present study was to determine the sequence of micro-structural development during continuous cooling from temperatures approaching the solidus, in an as cast silicon- aluminum bronze alloy having composition Cu-6 % Al-2% Si-0.6% Fe. This alloy has good resistance to seawater corrosion and low magnetic permeability. This alloy is used in marine and chemical applications where corrosion resistance is a prime requirement. A study of the development of microstructure during continuous cooling from the solidus temperature showed that at high temperatures the alloy consisted of β and α phases in which the α-phase had a Widmanstatten morphology. As the temperature is lowered Fe5Si3 particles formed throughout the microstructure and this is followed by the formation of Fe3Si2 precipitates in the α-grains. On further cooling the β phase is transformed into γ2

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References


Macken, P. J. and Smith, A. A.; The Aluminum Bronzes, CDA, London, 1966.

Lioyd, B. A. and Pyemont J. W.; Met. Tech., 1(1974) 534.

Cairns, W. J., Goodwin, R. J. and Stephens D. M.; J. Inst. Met., (1970) 244.

Upton, B.; Corrosion, 19(1963) 204.

Bradley, J. N.; Inst. Met. Rev., 17(1972) 88-92.

Dies, K.; Kupfer and Kupfer Legierungen in der Technik, Berlin, Springer-Verlag, 1967.

Newcombe, G.; Copper Conf., Cleveland, Ohio, New York, CDA, 1972.

Wilson, F. H.; Trans. AIME, 175(1948) 262.

Iqbal, J.; PhD Thesis, University of Manchester, 1985.

Hasan, F., Iqbal, J. and Ridlay, N.; J. Materials Sci. Tech., 1(1985) 312.

Hasan, F., Jahanfrooz, A., Lorimer, G. W. and Ridley, N.; Met. Trans., 13A(1982) 1337.






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