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Browsing by Subject "Phase transformation"

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Dynamic globularization of a-phase in Ti6Al4V alloy during hot compression

Author: Mutombo, K ; Siyasiya, C ; Stumpf, WE Date: Dec 2013 Ti6Al4V samples were isothermally compressed using a Gleeble (supTM) 1500D thermo-mechanical simulator. Differential scanning calorimetry (DSC), microstructural analyses, and thermodynamic calculations were used to investigate the sequence ... Read more
Effects of laser bending on the microstructural constituents

Author: Tshabalala, Lerato C ; Pityana, Sisa L ; Mbaya, R Date: 2012 This article will illustrate the correlation between microstructural and microhardness changes in high-strength-low-alloy steel that occur as a result of laser-bending. Laser bending is a process of bending metal shapes using the laser beam ... Read more
In-situ LENS fabricated Ti–Al–Si alloy phase transformation and microstructural evolution after isothermal annealing heat treatments

Author: Raji, SA ; Popoola, API ; Pityana, Sisa L ; Popoola, OM ; Raji, NK ; Tlotleng, Monnamme Date: Feb 2022 Gamma titanium aluminide ( -TiAl) alloys are lightweight materials with potential application for high-temperature components. But their ductility at room temperature impedes widespread production of parts via traditional processing routes. ... Read more
Influence of stress relieving thermal cycles on AISI10 Mgspecimens produced by selective laser melting

Author: Mfusi, Busisiwe J ; Mathe, Ntombizodwa R ; Popoola, Patricia A ; Tshabalala, Lerato C Date: Oct 2019 The AlSi10Mg alloy is known for its castability, corrosion resistance, high heat conductivity, low weight and good weldability. The applications of the aluminium alloy components includes heat exchangers that are subjected to high temperatures ... Read more
Microstructure and phase transformation on milled and unmilled Ti induced by water quenching

Author: Bolokang, AS ; Phasha, MJ ; Motaung, DE ; Cummings, FR ; Muller, TFG ; Arendse, CJ Date: Oct 2014 Water quenching of unmilled Ti compact has yielded martensitic-type laths and fishbone-type twinned microstructures, with a', a'' and FCC phases induced. Upon quenching 30 h milled and (0+30) h mixed powders at 1200 °C, a', FCC, tetragonal ... Read more
Phase transformation and microstructural control of the a-solidifying -Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy

Author: Mathabathe, Maria N ; Govender, Gonasagren ; Bolokang, Amogelang S ; Mostert, RJ ; Siyasiya, CW Date: May 2018 The -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 analysis (HTDTA) was ... Read more
Phase transformation and microstructural control of the a-solidifying -Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy

Author: Mathabathe, Maria N ; Govender, Gonasagren ; Bolokang, Amogelang S ; Mostert, RJ ; Siyasiya, CW Date: Aug 2018 The -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 Widmanstatten laths. High temperature differential thermal analysis (HTDTA) was ... Read more

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Browsing by Subject "Phase transformation"

Browsing by Subject "Phase transformation"

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