Shape memory effect in a Cu-Zn-Al alloy with dual phase alpha / beta microstructure

The paradoxical decrease of the one way (OWSME) and the two-way shape memory effect (TWSME) with increasing volume fraction of martensite in dual phase microstructure obtained by quenching from dual phase equilibrium field alpha / beta in a Cu-Zn-Al alloy presented at Icomat '95 is re-evaluated...

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Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1998-12, Vol.273-275, p.415-419
Main Authors: Longauer, S, Makroczy, P, Janak, G, Longauerova, M
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container_title Materials science & engineering. A, Structural materials : properties, microstructure and processing
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creator Longauer, S
Makroczy, P
Janak, G
Longauerova, M
description The paradoxical decrease of the one way (OWSME) and the two-way shape memory effect (TWSME) with increasing volume fraction of martensite in dual phase microstructure obtained by quenching from dual phase equilibrium field alpha / beta in a Cu-Zn-Al alloy presented at Icomat '95 is re-evaluated. It is also found that TWSME degradation by thermal cycling increases with decreasing volume fraction of martensite. Both phenomena are accompanied by changes in degree of order in martensite, solution hardening of the alpha -phase and the stacking fault energy of martensite. They seem to be caused by the synergetic effect of changes in the stacking fault energy of martensite and solid solution hardening of the alpha -phase.
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title Shape memory effect in a Cu-Zn-Al alloy with dual phase alpha / beta microstructure
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