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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.
J. Iqbal, F. Ahmed, F Hasan. (2008) Development of Microstructure in Silicon-Aluminum-Bronze, Pakistan Journal of Engineering and Applied Sciences, Volume 3, Issue 1.
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