In-situ studies of γ-based Ti-Al alloys using synchrotron x-ray and neutron diffraction

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dc.contributor.authorLi, Xen_AU
dc.contributor.authorLiss, KDen_AU
dc.contributor.authorDippenaar, RJen_AU
dc.date.accessioned2022-05-30T04:35:45Zen_AU
dc.date.available2022-05-30T04:35:45Zen_AU
dc.date.issued2017-02-02en_AU
dc.date.statistics2021-10-11en_AU
dc.description.abstractBecause of their low density, good strength, corrosion resistance and high service temperature γ-based titanium aluminides are being considered as materials of choice in the aerospace and automobile industry. In our study, we focus on a series of interesting γ-based Ti-Al alloys with respect to the lattice evolution of Ti-45Al-7.5Nb-0.25C (at. %) during heating under a pressure of 10 GPa followed by synchrotron radiation; order-disorder transitions and shortrange-order in polysynthetic twinned Ti-Al single crystals using neutron scattering and phase transformation and texture evolution of high pressure torsion samples of Ti-45Al-7.5Nb by using complementary X-ray and neutron diffraction. Lattice parameter evolution can be separated into four contributions: thermal expansion, composition, order parameter and pressure. Diffuse scattering at reciprocal lattice positions provides evidence of short-range order, even in the disordered phase at very high temperature. Structural and atomic disorder is largely introduced by severe plastic deformation. These findings are fundamental to develop an improved understanding of the complex phase transformations. We report our first results of experiments performed under extremely high-pressure, relevant to advanced manufacturing processes.en_AU
dc.identifier.citationLi, Z., Liss, K.-D., & Dippenaar, R. (2017). In-situ studies of γ-based Ti-Al alloys using synchrotron x-ray and neutron diffraction. Poster presented to the 41st Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, NSW, Australia, 31st January - 3rd February 2017. (pp. 91). Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2017/Wagga_2017_Conference_Handbook.pdfen_AU
dc.identifier.conferenceenddate3 February 2017en_AU
dc.identifier.conferencenameAustralian and New Zealand Institutes of Physics 41st Annual Condensed Matter and Materials Meetingen_AU
dc.identifier.conferenceplaceWagga Wagga, NSWen_AU
dc.identifier.conferencestartdate31 January 2017en_AU
dc.identifier.otherTP15en_AU
dc.identifier.pagination91en_AU
dc.identifier.urihttps://physics.org.au/wp-content/uploads/cmm/2017/Wagga_2017_Conference_Handbook.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13233en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectAlloysen_AU
dc.subjectSynchrotronsen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectTitaniumen_AU
dc.subjectAerospace industryen_AU
dc.subjectOrder-disorder transformationsen_AU
dc.subjectCrystal latticesen_AU
dc.titleIn-situ studies of γ-based Ti-Al alloys using synchrotron x-ray and neutron diffractionen_AU
dc.typeConference Posteren_AU
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