High temperature transformations of the Au7Cu5Al 4 shape-memory alloy

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dc.contributor.author Cortie, MB
dc.contributor.author Kealley, CS
dc.contributor.author Bhatia, V
dc.contributor.author Thorogood, GJ
dc.contributor.author Elcombe, MM
dc.contributor.author Avdeev, M
dc.date.accessioned 2012-02-02T04:50:41Z
dc.date.issued 2011-02-24
dc.identifier.citation Journal of Alloys and Compounds, 2011, 509 (8), pp. 3502 - 3508
dc.identifier.issn 0925-8388
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/14574
dc.description.abstract The β-phase of Au7Cu5Al4 undergoes a reversible shape-memory phase transformation, however there has been some uncertainty regarding the crystal structure or structures of the parent phase. Here we show that, under equilibrium conditions, the parent phase possesses the L21 structure between its Ap (about 79 °C) and ∼630 °C, and the B2 primitive cubic structure between ∼630 °C and its melting point. It melts directly from B2 into the liquid state and hence never achieves the random bcc A2 structure that has been previously mooted. Splat-cast samples of the alloy are martensitic, proving that development of equilibrium order and defect concentration are not pre-requisites for the A → M transformation to occur. © 2010 Elsevier B.V. All rights reserved.
dc.language eng
dc.relation.hasversion Accepted manuscript version en_US
dc.relation.isbasedon 10.1016/j.jallcom.2010.12.068
dc.title High temperature transformations of the Au7Cu5Al 4 shape-memory alloy
dc.type Journal Article
dc.parent Journal of Alloys and Compounds
dc.journal.volume 8
dc.journal.volume 509
dc.journal.number 8 en_US
dc.publocation Lausanne en_US
dc.identifier.startpage 3502 en_US
dc.identifier.endpage 3508 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0204 Condensed Matter Physics
dc.personcode 020302
dc.personcode 103748
dc.personcode 103071
dc.percentage 100 en_US
dc.classification.name Condensed Matter Physics en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity WOS:000287570200016 en_US
dc.description.keywords Crystal structure
dc.description.keywords Intermetallic
dc.description.keywords Order-disorder effect
dc.description.keywords Shape memory
dc.description.keywords X-ray diffraction
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Open Access
utslib.copyright.date 2015-04-15 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history General (ID: 2)

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