The vacuum melted ɣ-TiAl (Nb, Cr, Si)-doped alloys and their cyclic oxidation properties

dc.contributor.authorMathabathe, Maria Ntsoaki
dc.contributor.authorBolokang, A.S.
dc.contributor.authorGovender, S.
dc.contributor.authorMostert, Roelf Johannes
dc.contributor.authorSiyasiya, Charles Witness
dc.date.accessioned2018-06-01T07:11:16Z
dc.date.issued2018-08
dc.description.abstractThe γ-TiAl intermetallic alloy doped with Nb, Cr, and Si metals has been developed. It has emerged that the ternary Ti-48Al-2Nb and quinary Ti-48Al-2Nb-0.7Cr-0.3Si alloys yielded the best mechanical and cyclic oxidation properties. In particular, the quinary Ti-48Al-2Nb-0.7Cr-0.3Si alloy rapidly developed the protective stable Al2O3 oxide doped with nitrogen and titanium oxynitride during cyclic oxidation. This showed a lower hardness when compared to the other alloys after cyclic oxidation. The oxide layer proved to have a good adhesive relationship with the parent metal. The alloys microstructures were analysed with the scanning electron microscopy (SEM). The sample hardness test were conducted by Vickers hardness tester.en_ZA
dc.description.departmentMaterials Science and Metallurgical Engineeringen_ZA
dc.description.embargo2019-08-01
dc.description.librarianhj2018en_ZA
dc.description.sponsorshipDepartment of Science and Technology (HVD5S1X) and Council of Scientific and Industrial Research (CSIR).en_ZA
dc.description.urihttp://www.journals.elsevier.com/vacuumen_ZA
dc.identifier.citationMathabathe, M.N., Bolokang, A.S., Govender, G. et al. 2018, 'The vacuum melted ɣ-TiAl (Nb, Cr, Si)-doped alloys and their cyclic oxidation properties', Vacuum, vol. 154, pp. 82-89.en_ZA
dc.identifier.issn0042-207X (print)
dc.identifier.issn1879-2715 (online)
dc.identifier.other10.1016/j.vacuum.2018.04.055
dc.identifier.urihttp://hdl.handle.net/2263/65055
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2018 Elsevier Ltd. Notice : this is the author’s version of a work that was accepted for publication in Vacuum. 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 Vacuum, vol. 154, pp. 82-89, 2018. doi : 10.1016/j.vacuum.2018.04.055.en_ZA
dc.subjectScanning electron microscopy (SEM)en_ZA
dc.subjectOxynitridesen_ZA
dc.subjectCyclic oxidationen_ZA
dc.subjectVacuum melteden_ZA
dc.subjectTi-48Al-2Nb-0.7Cr-0.3Si alloyen_ZA
dc.subjectTi-48Al-2Nb alloyen_ZA
dc.subjectTitanium (Ti)en_ZA
dc.subjectNiobium alloysen_ZA
dc.subjectTitanium oxynitrideen_ZA
dc.subjectAluminaen_ZA
dc.subjectAluminum alloysen_ZA
dc.subjectAluminum oxideen_ZA
dc.subjectChromium alloysen_ZA
dc.subjectOxidationen_ZA
dc.subjectSilicon alloysen_ZA
dc.subjectTernary alloysen_ZA
dc.subjectTitanium alloysen_ZA
dc.subjectVickers hardnessen_ZA
dc.subjectLower hardnessen_ZA
dc.subjectNb alloysen_ZA
dc.subjectOxide layeren_ZA
dc.subjectParent metalen_ZA
dc.subjectSi alloysen_ZA
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherSDG-12: Responsible consumption and production
dc.subject.otherSDG-12: Responsible consumption and production
dc.subject.otherSDG-13: Climate action
dc.subject.otherSDG-13: Climate action
dc.titleThe vacuum melted ɣ-TiAl (Nb, Cr, Si)-doped alloys and their cyclic oxidation propertiesen_ZA
dc.typePostprint Articleen_ZA

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