Isothermal decomposition of the beta' phase in Cu-Zn-Al shape-memory alloys

The decomposition of the beta' phase in Cu-25.7Zn-3.1Al and Cu-17.9Zn-5.4Al shape-memory alloys was studied. The B2- > DO3 order transition was not completely suppressed by quenching in icy water. The aging process at temperatures below 400 deg C involved the formation of bainite or a phase....

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Published inMateriali in tehnologije Vol. 40; no. 4; pp. 153 - 156
Main Authors Asanovic, Vanja, Delijic, Kemal, Jaukovic, Nada
Format Journal Article
LanguageSlovenian
Published 01.07.2006
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Summary:The decomposition of the beta' phase in Cu-25.7Zn-3.1Al and Cu-17.9Zn-5.4Al shape-memory alloys was studied. The B2- > DO3 order transition was not completely suppressed by quenching in icy water. The aging process at temperatures below 400 deg C involved the formation of bainite or a phase. In specimens aged at higher temperatures the alpha phase was observed. The activation energies of a precipitation in the Cu-25.7Zn-3.1Al alloy and Cu-17.9Zn-5.4Al alloy were determined to be 109.85 kJ mol-1 and 132.12 kJ mol-1, respectively. The formation of gamma precipitates was not observed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1580-2949
1580-3414