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https://apo.ansto.gov.au/dspace/handle/10238/8239
Title: | Irradiation behaviour of α2 and γ phases in He ion implanted titanium aluminide alloy |
Authors: | Zhu, HL Wei, T Blackford, MG Short, KT Carr, DG Harrison, RP Edwards, L Seo, DY Maruyama, K |
Keywords: | Alloys Microstructure Helium Ions Radiations |
Issue Date: | 1-Jul-2014 |
Publisher: | Elsevier |
Citation: | Zhu, 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(0), 28-33. doi:10.1016/j.intermet.2014.02.005 |
Abstract: | A 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. |
Gov't Doc #: | 7763 |
URI: | http://dx.doi.org/10.1016/j.intermet.2014.02.005 http://apo.ansto.gov.au/dspace/handle/10238/8239 |
ISSN: | 0966-9795 |
Appears in Collections: | Journal Articles |
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