Martensite destabilization in Au7Cu5Al4 shape-memory alloy

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dc.contributor.authorBhatia, VKen_AU
dc.contributor.authorKealley, CSen_AU
dc.contributor.authorPrior, MJen_AU
dc.contributor.authorCortie, MBen_AU
dc.date.accessioned2011-03-30T04:45:58Zen_AU
dc.date.available2011-03-30T04:45:58Zen_AU
dc.date.issued2011-03en_AU
dc.date.statistics2011-03en_AU
dc.description.abstractAging-induced changes in the austenite peak (Aρ) temperature of Au7Cu5Al4 shape-memory alloy are investigated. Whereas heat treating the parent phase at temperatures >140°C or aging the martensite for long times at room temperature both stabilized the Aρ to ~80°C, low-temperature excursions into the parent phase caused the subsequent Aρ to drop to ~60°C and the transformation hysteresis to decrease. The evidence indicates that this destabilization of the martensite is caused by time-dependent relaxation of elastic constraint due to parent-phase lath migration during the preceding low-temperature austenitizing treatment. This mechanism of aging is different from that of the better-known symmetry-conforming short-range order phenomenon. © 2011, Elsevier Ltd.en_AU
dc.identifier.citationBhatia, V. K., Kealley, C. S., Prior, M. J., & Cortie, M. B. (2011). Martensite destabilization in Au7Cu5Al4 shape-memory alloy. Acta Materialia, 59(5), 2193-2200. doi:10.1016/j.actamat.2010.12.021en_AU
dc.identifier.govdoc3328en_AU
dc.identifier.issn1359-6454en_AU
dc.identifier.issue5en_AU
dc.identifier.journaltitleActa Materialiaen_AU
dc.identifier.pagination2193-2200en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.actamat.2010.12.021en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3161en_AU
dc.identifier.volume59en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectAgingen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectShape memory effecten_AU
dc.subjectGold alloysen_AU
dc.subjectMartensiteen_AU
dc.titleMartensite destabilization in Au7Cu5Al4 shape-memory alloyen_AU
dc.typeJournal Articleen_AU
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