Irradiation behaviour of α2 and γ phases in He ion implanted titanium aluminide alloy

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dc.contributor.authorZhu, HLen_AU
dc.contributor.authorWei, Ten_AU
dc.contributor.authorBlackford, MGen_AU
dc.contributor.authorShort, KTen_AU
dc.contributor.authorCarr, DGen_AU
dc.contributor.authorHarrison, RPen_AU
dc.contributor.authorEdwards, Len_AU
dc.contributor.authorSeo, DYen_AU
dc.contributor.authorMaruyama, Ken_AU
dc.date.accessioned2017-01-11T04:39:51Zen_AU
dc.date.available2017-01-11T04:39:51Zen_AU
dc.date.issued2014-07-01en_AU
dc.date.statistics2017-01-11en_AU
dc.description.abstractA Ti–45Al–2Nb–2Mn + 0.8 vol.% TiB2 (at.%) alloy with fully lamellar microstructure consisting of hexagonal-close-packed (hcp) α2 and face-centred-tetragonal (fct) γ phases was irradiated by implanting helium ions to different fluences. Microstructural examination showed that helium cavities are formed in both the α2 and γ phases after He-ion irradiation. However, the helium cavities and their size change with fluence are much larger in the α2 phase than those in the γ phase, indicating that the γ phase exhibits better tolerance to the He-ion irradiation than the α2 phase. Since α2 and γ phases have different crystal structures, they possess differences in helium solubility and interstitial migration. These differences are responsible for the variation in radiation damage behaviour between the two phases. © 2014, Elsevier Ltd.en_AU
dc.identifier.citationZhu, H., Wei, T., Blackford, M., Short, K., Carr, D., Harrison, R., Edwards, L., Seo, D. & Maruyama, K. (2014). Irradiation behaviour of α2 and γ phases in He ion implanted titanium aluminide alloy. Intermetallics, 50, 28-33. doi:10.1016/j.intermet.2014.02.005en_AU
dc.identifier.govdoc7763en_AU
dc.identifier.issn0966-9795en_AU
dc.identifier.journaltitleIntermetallicsen_AU
dc.identifier.pagination28-33en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.intermet.2014.02.005en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/8239en_AU
dc.identifier.volume50en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectAlloysen_AU
dc.subjectMicrostructureen_AU
dc.subjectHeliumen_AU
dc.subjectIonsen_AU
dc.subjectRadiationsen_AU
dc.titleIrradiation behaviour of α2 and γ phases in He ion implanted titanium aluminide alloyen_AU
dc.typeJournal Articleen_AU
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