Mathabathe, Maria NtsoakiBolokang, A.S.Govender, G.Siyasiya, Charles WitnessMostert, Roelf Johannes2019-10-012019-12Mathabathe, 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. 2925-2939.0921-8831 (print)1568-5527 (online)10.1016/j.apt.2019.08.038http://hdl.handle.net/2263/71519Beta (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© 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.Aluminum alloysBinary alloysChromium alloysCompactionMeltingScanning electron microscopy (SEM)Ternary alloysTitanium alloysVacuum applicationsVacuum technologyCold pressingMicro-structural characterizationOrientation mappingPhase domainTiAl-based alloysVacuum arc meltingNiobium alloysElectron backscatter diffraction (EBSD)Blackburn orientation relationship (BOR)Energy dispersion spectroscopy (EDS)X-ray diffraction (XRD)Engineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-12SDG-12: Responsible consumption and productionPostprint Article