Browsing Research Articles (Materials Science and Metallurgical Engineering) by UP Author "Mathabathe, Maria Ntsoaki"

Browsing Research Articles (Materials Science and Metallurgical Engineering) by UP Author "Mathabathe, Maria Ntsoaki"

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  • Cold-pressing and vacuum arc melting of γ-TiAl based alloys 
    Mathabathe, Maria Ntsoaki; Bolokang, A.S.; Govender, G.; Siyasiya, Charles Witness; Mostert, Roelf Johannes (Elsevier, 2019-12)
    Beta (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 ...
  • Deformation and fracture behaviour of the g-TiAl based intermetallic alloys 
    Mathabathe, Maria Ntsoaki; Bolokang, A.S.; Govender, G.; Siyasiya, Charles Witness; Mostert, Roelf Johannes (Southern African Institute of Mining and Metallurgy, 2021-04)
    The b-solidifying g-TiAl intermetallic alloys of nominal composition Ti-48Al (binary alloy), Ti-48Al-2Nb (ternary alloy), Ti-48Al-2Nb-0.7Cr (quaternary alloy), and Ti-48Al-2Nb-0.7Cr-0.3Si (quinary alloy) (in at.%) were ...
  • EBSD characterisation of the B2 orientation in -TiAl based alloy 
    Mathabathe, Maria Ntsoaki; Bolokang, A.S.; Govender, G.; Siyasiya, Charles Witness; Mostert, Roelf Johannes (IOP Publishing, 2019-11-09)
    Electron backscattered diffraction (EBSD) has been conducted to determine the orientation relationship of the remnant B2 phase in an -solidified -Ti-45Al-2Nb-0.3Si (at. %) based intermetallic alloy. The morphology and ...
  • Phase transformation and microstructural control of the α-solidifying γ-Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy 
    Mathabathe, Maria Ntsoaki; Govender, S.; Bolokang, A.S.; Mostert, Roelf Johannes; Siyasiya, Charles Witness (Elsevier, 2018-08)
    The γ-Ti-45Al-2Nb-0.7Cr-0.3Si based intermetallic alloy was developed. Microstructure evolution of the as-cast and heat-treated alloy yielded the spheriodised and Widmanstätten laths. High temperature differential thermal ...
  • Structure-property orientation relationship of a γ/α2/Ti5Si3 in as-cast Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy 
    Mathabathe, Maria Ntsoaki; Bolokang, A.S.; Govender, G.; Mostert, Roelf Johannes; Siyasiya, Charles Witness (Elsevier, 2018-10)
    Structure-property relationship of the as-cast γ-Ti-45Al-2Nb-0.7Cr-0.3Si based intermetallic alloy was examined. The phases stable at room temperature in the alloy were γ/α2/Ti5Si3, respectively; while their crystal ...
  • The vacuum melted ɣ-TiAl (Nb, Cr, Si)-doped alloys and their cyclic oxidation properties 
    Mathabathe, Maria Ntsoaki; Bolokang, A.S.; Govender, S.; Mostert, Roelf Johannes; Siyasiya, Charles Witness (Elsevier, 2018-08)
    The 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 ...