In situ synchrotron high-energy x-ray diffraction analysis on phase transformations in Ti-Al alloys processed by equal-channel angular pressing

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dc.contributor.authorLiss, KDen_AU
dc.contributor.authorWhitfield, REen_AU
dc.contributor.authorXu, Wen_AU
dc.contributor.authorBuslaps, Ten_AU
dc.contributor.authorYeoh, LAen_AU
dc.contributor.authorWu, XLen_AU
dc.contributor.authorZhang, DLen_AU
dc.contributor.authorXia, KNen_AU
dc.date.accessioned2009-11-23en_AU
dc.date.accessioned2010-04-30T05:05:06Zen_AU
dc.date.available2009-11-23en_AU
dc.date.available2010-04-30T05:05:06Zen_AU
dc.date.issued2009-11en_AU
dc.date.statistics2009-11en_AU
dc.description.abstractMixtures of 47-Al and 53-Ti powders (atomic %) have been consolidated using back pressure equal-channel angular pressing starting with both raw and ball-milled powders. In situ synchrotron high-energy X-ray diffraction studies are presented with continuous Rietveld analysis obtained upon a heating ramp from 300 K to 1075 K performed after the consolidation process. Initial phase distributions contain all intermetallic compounds of this system except Al, with distribution maxima in the outer regions of the concentrations (α-Ti, TiAl3). Upon annealing, the phase evolution and lattice parameter changes owing to chemical segregation, which is in favour for the more equilibrated phases such as γ-TiAl, α(2)-Ti3Al and TiAl2, were followed unprecedentedly in detail. An initial δ-TiH2 content with a phase transition at about 625 K upon heating created an intermediate β-Ti phase which played an important role in the reaction chain and gradually transformed into the final products. © 2009, Wiley-Blackwell.en_AU
dc.identifier.citationLiss, K. D., Whitfield, R. E., Xu, W., Buslaps, T., Yeoh, L. A., & Wu, X. L., Zhang, D. L., Xia, K. (2009). In situ synchrotron high-energy x-ray diffraction analysis on phase transformations in Ti-Al alloys processed by equal-channel angular pressing. Journal of Synchrotron Radiation, 16, 825-834. doi:10.1107/S090904950903711Xen_AU
dc.identifier.govdoc1333en_AU
dc.identifier.issn0909-0495en_AU
dc.identifier.journaltitleJournal of Synchrotron Radiationen_AU
dc.identifier.pagination825-834en_AU
dc.identifier.urihttp://dx.doi.org/10.1107/S090904950903711Xen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2432en_AU
dc.identifier.volume16en_AU
dc.language.isoenen_AU
dc.publisherWiley-Blackwellen_AU
dc.subjectPhase transformationsen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectPowder metallurgyen_AU
dc.subjectAluminiumen_AU
dc.subjectTitaniumen_AU
dc.subjectHigh energy physicsen_AU
dc.titleIn situ synchrotron high-energy x-ray diffraction analysis on phase transformations in Ti-Al alloys processed by equal-channel angular pressingen_AU
dc.typeJournal Articleen_AU
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