An in-situ high-energy X-ray diffraction study on the hot-deformation behavior of a β-phase containing TiAl alloy

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dc.contributor.authorSchmoelzer, Ten_AU
dc.contributor.authorLiss, KDen_AU
dc.contributor.authorKirchlechner, Cen_AU
dc.contributor.authorMayer, Sen_AU
dc.contributor.authorStark, Aen_AU
dc.contributor.authorPeel, MJen_AU
dc.contributor.authorClemens, Hen_AU
dc.date.accessioned2013-11-25T05:36:01Zen_AU
dc.date.available2013-11-25T05:36:01Zen_AU
dc.date.issued2013-08-01en_AU
dc.date.statistics2013-11-25en_AU
dc.description.abstractIn engineering materials, microstructural evolution during hot-working critically determines the properties of the finished part. Intermetallic TiAl alloys are no exception and numerous attempts have been made to improve their performance by subjecting them to harmonized hot-working steps. In the current work a novel in-situ diffraction technique along with conventional microscopic methods were employed to characterize the behavior of the individual phases at two different deformation temperatures. A so-called TNM™ alloy with a nominal composition of Ti-43.5 Al-4 Nb-1 Mo-0.1 B (in at%), which exhibits an adjustable fraction of disordered β-phase at elevated temperatures, was deformed isothermally at 1220 °C and 1300 °C. At 1220 °C three phases (α,β,γ) are present in thermodynamic equilibrium which reduces to two (α,β) at 1300 °C. It was possible to observe in-situ the individual behavior of the involved phases during deformation and the phenomena which accommodate the defects generated by hot-working. Results of post-mortem microscopic investigations were used to confirm the findings. The results of the in-situ experiments give unique insights into the hot-deformation behavior of multi-phase TiAl alloys, which can be used for specific process optimization and for further alloy development. © 2013, Elsevier Ltd.en_AU
dc.identifier.citationSchmoelzer, T., Liss, K. D., Kirchlechner, C., Mayer, S., Stark, A., Peel, M., & Clemens, H. (2013). An in-situ high-energy x-ray diffraction study on the hot-deformation behavior of a β-phase containing TiAl alloy. Intermetallics, 39, 25-33. doi:10.1016/j.intermet.2013.02.016en_AU
dc.identifier.govdoc5114en_AU
dc.identifier.issn0966-9795en_AU
dc.identifier.journaltitleIntermetallicsen_AU
dc.identifier.pagination25-33en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.intermet.2013.02.016en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4999en_AU
dc.identifier.volume39en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science Ltd.en_AU
dc.subjectTitaniumen_AU
dc.subjectMicrostructureen_AU
dc.subjectMicroscopyen_AU
dc.subjectDiffractionen_AU
dc.subjectAlloysen_AU
dc.subjectThermomechanical treatmentsen_AU
dc.titleAn in-situ high-energy X-ray diffraction study on the hot-deformation behavior of a β-phase containing TiAl alloyen_AU
dc.typeJournal Articleen_AU
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