Cold-pressing and vacuum arc melting of γ-TiAl based alloys

dc.contributor.authorMathabathe, Maria Ntsoaki
dc.contributor.authorBolokang, A.S.
dc.contributor.authorGovender, G.
dc.contributor.authorSiyasiya, Charles Witness
dc.contributor.authorMostert, Roelf Johannes
dc.date.accessioned2019-10-01T14:05:16Z
dc.date.issued2019-12
dc.description.abstractBeta (β) solidifying γ-TiAl intermetallic alloys of nominal composition Ti-48Al, Ti-48Al-2Nb, Ti-48Al-2Nb-0.7Cr alloys have been cold pressed and vacuum arc melted. The Al loss was due to compaction method used prior to the melting technique, since it was evident after compaction that Al particles migrated to the surface in contact with the die facets after cold pressing. Electron backscatter diffraction (EBSD)-orientation mapping demonstrated that the α-precipitation from the parent β-phase follows the Blackburn orientation relationship (BOR). Microstructural characterization of the alloys was studied by scanning electron microscopy (SEM) equipped with energy dispersion spectroscopy (EDS) for micro-analysis. X-ray diffraction (XRD) technique was used to detect phase compositions.en_ZA
dc.description.departmentMaterials Science and Metallurgical Engineeringen_ZA
dc.description.embargo2020-12-01
dc.description.librarianhj2019en_ZA
dc.description.sponsorshipDepartment of Science and Technology (DST) South Africa and Council of Scientific Industrial Research (CSIR).en_ZA
dc.description.urihttp://www.elsevier.com/locate/apten_ZA
dc.identifier.citationMathabathe, M.N., Bolokang, A.S., Govender, G. et al. 2019, 'Cold-pressing and vacuum arc melting of γ-TiAl based alloys', Advanced Powder Technology, vol. 30, no. 12, pp. 2925-2939.en_ZA
dc.identifier.issn0921-8831 (print)
dc.identifier.issn1568-5527 (online)
dc.identifier.other10.1016/j.apt.2019.08.038
dc.identifier.urihttp://hdl.handle.net/2263/71519
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Advanced Powder Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Advanced Powder Technology, vol. 30, no. 12, pp. 2925-2939, 2019. doi : 10.1016/j.apt.2019.08.038.en_ZA
dc.subjectAluminum alloysen_ZA
dc.subjectBinary alloysen_ZA
dc.subjectChromium alloysen_ZA
dc.subjectCompactionen_ZA
dc.subjectMeltingen_ZA
dc.subjectScanning electron microscopy (SEM)en_ZA
dc.subjectTernary alloysen_ZA
dc.subjectTitanium alloysen_ZA
dc.subjectVacuum applicationsen_ZA
dc.subjectVacuum technologyen_ZA
dc.subjectCold pressingen_ZA
dc.subjectMicro-structural characterizationen_ZA
dc.subjectOrientation mappingen_ZA
dc.subjectPhase domainen_ZA
dc.subjectTiAl-based alloysen_ZA
dc.subjectVacuum arc meltingen_ZA
dc.subjectNiobium alloysen_ZA
dc.subjectElectron backscatter diffraction (EBSD)en_ZA
dc.subjectBlackburn orientation relationship (BOR)en_ZA
dc.subjectEnergy dispersion spectroscopy (EDS)en_ZA
dc.subjectX-ray diffraction (XRD)en_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-07
dc.subject.otherSDG-07: Affordable and clean energy
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-12
dc.subject.otherSDG-12: Responsible consumption and production
dc.titleCold-pressing and vacuum arc melting of γ-TiAl based alloysen_ZA
dc.typePostprint Articleen_ZA

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