Copper alloy is a commonly used type of alloy.
According to the phase diagram of copper alloys,brass with less than 36%zinc has a microstructure of single-phase solid solution.Such brass can be referred to as alpha brass or single-phase brass.
For single-phase brass,after deformation and annealing,the crystal grains appear polygonal and contain numerous annealing twins.
Moreover,brass possesses very good plasticity,allowing various cold deformation processes.Meanwhile,brass can also have a two-phase microstructure,and this type of brass is called duplex brass(or two-phase brass).
Therefore,the phase in question is essentially an ordered solid solution based on electron compounds.It is relatively hard at low temperatures but exhibits good plasticity at high temperatures.
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