In-situ characterization of phase transformations and microstructure evolution in a γ-TiAl based alloy

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dc.contributor.authorLiss, KDen_AU
dc.contributor.authorBartels, Aen_AU
dc.contributor.authorClemens, Hen_AU
dc.contributor.authorStark, Aen_AU
dc.contributor.authorBuslaps, Ten_AU
dc.contributor.authorPhelan, Den_AU
dc.contributor.authorYeoh, LAen_AU
dc.date.accessioned2011-02-03T00:35:48Zen_AU
dc.date.available2011-02-03T00:35:48Zen_AU
dc.date.issued2008-06-01en_AU
dc.date.statistics2008-06-01en_AU
dc.description.abstractPhase diagrams and microstructures of titanium aluminides are rather complex and, so far, little data were observed in-situ at elevated temperatures. We report on two-dimensional high energy X-ray diffraction and complementary laser scanning confocal microscopy to characterize the appearing phases and to follow the phase evolution in-situ and in real time. As an example, the microstructure evolution of a quenched γ-TiAl alloy, consisting of α2-Ti3Al grains at room temperature, has been followed in both reciprocal and direct space as a function of temperature up to 1400°C. At 700 – 800°C extremely fine γ-laths are formed in α2-grains occurring through an oriented rearrangement of atoms. Streaks linking reflections of both phases testify from coherent lattice and orientation gradients in the transforming crystallite. At temperatures around the eutectoid temperature recrystallization effects and the γ->α phase transition take place leading to grain refinement.en_AU
dc.identifier.bookchapternumber19en_AU
dc.identifier.booktitleStructural Aluminides for Elevated Temperatures: Gamma Titanium and Other Metallic Aluminidesen_AU
dc.identifier.citationLiss, K. D., Bartels, A., Clemens, H., Stark, A., Buslaps, T., Phelan, D., & Yeoh, L. A. (2008). In-situ characterization of phase transformations and microstructure evolution in a γ-TiAl based alloy. Paper presented to the 137th TMS Annual Meeting & Exhibition (TMS 2008) - "Linking Science and Technology for Global Solutions", 9th - 13th March 2008. Ernest N. Morial Convention Center: New Orleans, Louisiana, United States of America. In Y.W. Kim, D. Morris, R. Yang & C. Leyens (Eds.), Structural Aluminides for Elevated Temperatures: Gamma Titanium and Other Metallic Aluminides, (pp. 137-144). Warrendale, Pennsylvania, United States of America: The Minerals, Metals & Materials Society (TMS).en_AU
dc.identifier.conferenceenddate13 March 2008en_AU
dc.identifier.conferencename137th TMS Annual Meeting & Exhibition (TMS 2008) - 'Linking Science and Technology for Global Solutionsen_AU
dc.identifier.conferenceplaceNew Orleans, Louisianaen_AU
dc.identifier.conferencestartdate9 March 2008en_AU
dc.identifier.editorsY.W. Kim, D. Morris, R. Yang & C. Leyensen_AU
dc.identifier.govdoc3178en_AU
dc.identifier.isbn9780873397209en_AU
dc.identifier.pagination137-144en_AU
dc.identifier.placeofpublicationWarrendale, Pennsylvaniaen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2985en_AU
dc.language.isoenen_AU
dc.publisherThe Minerals, Metals & Materials Society (TMS)en_AU
dc.subjectTitaniumen_AU
dc.subjectPhase transformationsen_AU
dc.subjectSynchrotron radiationen_AU
dc.subjectLaser spectroscopyen_AU
dc.subjectMicrostructureen_AU
dc.subjectReal time systemsen_AU
dc.titleIn-situ characterization of phase transformations and microstructure evolution in a γ-TiAl based alloyen_AU
dc.typeConference Paperen_AU
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