Cu-Zn-Al shape memory alloys

The Cu-Zn-Al shape memory alloys are derived from the B2 CuZn phase by alloying with Al, and the composition of the 

It has to be emphasized that these structures are stable only at elevated temperatures whereas at room temperature they are only metastable, i.e. these alloys decompose if annealed at too low temperatures. 

As already mentioned for CuZn, the characteristics of such shape memory alloys have been discussed in detail with respect to crystallography, microstructure, 

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