Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route

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dc.contributor.authorGuo, Wen_AU
dc.contributor.authorQuadir, MZen_AU
dc.contributor.authorMoricca, SAen_AU
dc.contributor.authorEddows, Ten_AU
dc.contributor.authorFerry, Men_AU
dc.date.accessioned2015-09-30T01:45:10Zen_AU
dc.date.available2015-09-30T01:45:10Zen_AU
dc.date.issued2013-07-15en_AU
dc.date.statistics2015-09-28en_AU
dc.description.abstractBody centred cubic (BCC) β-phase multifunctional titanium alloys have been developed with a very unique combination of thermal and mechanical properties. In this investigation, a very low porosity Ti–36.8–Nb–2.7Zr–2.0Ta–0.44O (wt%) alloy was produced by powder sintering, hot forging, solution treatment and cold swaging. X-ray diffraction and transmission electron microscopy (TEM) of the solution treated alloy revealed the presence of a small amount of ω-phase in a predominantly BCC β-phase matrix. Electron backscatter diffraction (EBSD) of the swaged alloy revealed a highly elongated and fragmented microstructure, and a strong 〈110〉 fibre texture. TEM also revealed the existence of stress-induced twin lamella, dislocations and ω-phase. Consistent with previous studies on these types of alloys, the swaged alloy exhibited non-linear elasticity during tensile straining, low elastic modulus (45.4 GPa), high elastic limit (2.3%), high elongation to failure (8.1%), and a high yield strength (880 MPa) and tensile strength (940 MPa). The coefficient of thermal expansion was also low (∼5×10−6 K−1 between 50 and 300 °C) in this alloy. © 2013, Elsevier B.V.en_AU
dc.identifier.citationGuo, W., Quadir, M. Z., Moricca, S., Eddows, T., & Ferry, M. (2013). Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route. Materials Science and Engineering: A - Structural Materials Properties Microstructure and Processing, 575, 206-216. doi:10.1016/j.msea.2013.03.029en_AU
dc.identifier.govdoc6119en_AU
dc.identifier.issn0921-5093en_AU
dc.identifier.journaltitleMaterials Science and Engineering: A - Structural Materials Properties Microstructure and Processingen_AU
dc.identifier.pagination206-216en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.msea.2013.03.029en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6275en_AU
dc.identifier.volume575en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectTitanium alloysen_AU
dc.subjectForgingen_AU
dc.subjectSwagingen_AU
dc.subjectMicrostructureen_AU
dc.subjectTextureen_AU
dc.subjectMechanical propertiesen_AU
dc.titleMicrostructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy routeen_AU
dc.typeJournal Articleen_AU
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