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Additive manufacturing: Characterization of TI-6AI-4V alloy intended for biomedical application

Author: Ramosoeu, ME ; Chikwanda, HK ; Bolokang, AS ; Booysen, G ; Ngonda, TN Date: Oct 2010 Direct Metal Laser Sintering (DMLS) is one of the new Laser Additive Manufacturing (LAM) techniques used for producing complex topology components mostly found in medical applications. The work presented in this paper focuses on metallographic ... Read more
Corrosion fatigue performance in simulated sea water of aluminium 6061-T651 welded using ER4043 filler wire

Author: Mutombo, K ; Du Toit, M Date: Oct 2010 The fatigue life of Al6061-T651 for various applied stress amplitudes in the unwelded and welded conditions was significantly lower in 3.5% NaCl simulated sea water solution, compared to that in air. The damage ratio increased with a decrease ... Read more
Electrowinning molten titanium from titanium dioxide

Author: Van Vuuren, DS ; Engelbrecht, AD ; Hadley, TD Date: Oct 2005 The value chain of titanium products shows that the difference between the cost of titanium ingot and titanium dioxide is about $9/kg titanium. In contrast, the price of aluminium, which is produced in a similar way, is only about $1.7/kg. ... Read more
In search of low cost titanium: the Fray Farthing Chen (FFC) Cambridge process

Author: Oosthuizen, SJ Date: Oct 2010 This article explores the Fray Farthing Chen (FFC) Cambridge Process, a novel method for the electrochemical de-oxidation of metal oxides in molten salt, discovered at the University of Cambridge in 1997. The process was hailed as a highly ... Read more
Lighter, greener and strong: developing light metals for application in the aerospace industry

Author: Du Preez, W Date: Aug 2010 This presentation starts of by discussing the drivers of the international titanium industry, followed by drivers of the South African titanium industry. The Titanium Centre of Competence is then analysed. The conclusion is reached that the ... Read more
Mechanical properties of mill-annealed Ti6Al4V investment cast

Author: Mutombo, K ; Rossouw, P ; Govender, G Date: Jul 2011 Ti6Al4V alloy, produced by investment casting using yttria stabilized zirconia, was machined and then mill-annealed in vacuum furnace. The ultimate strength, yield strength and percentage elongation were largely improved compared to the same ... Read more
Microstructure and wear behaviour of Al/TiB2 metal matrix composite

Author: Popoola, AP ; Pityana, Sisa L ; Ogunmuyiwa, E Date: Oct 2010 Al/TiB2 metal matrix composite (MMCs) was fabricated on aluminium AA1200 with the aim of improving the wear resistance property of the substrate. The characterization of the MMCs was carried out by Optical Microscopy (OM), Scanning Electron ... Read more
Optimisation of the solution heat treatment of Rheo-processed Al-Cu-Mg-(Ag) Alloys A206 and A201

Author: Masuku, EP ; Moller, H ; Knutsen, R ; Ivanchev, L ; Govender, G Date: Jun 2009 The traditional solution treatment cycles that are currently applied to rheo-processed A201 are mostly those that are used for conventional castings. These solution treatments are not necessarily the optimum solution treatments for rheo-processing. ... Read more
Overview of materials research in South Africa

Author: Du Preez, W Date: Sep 2011 This presentation provides an overview of materials research in South Africa. It highlights research done on batteries, polymers, nanocomposites and nano-metal matrix composites, piezoelectric materials, light metals and laser processing of ... Read more
Reducing non value adding aluminium alloy in production of parts through high pressure die casting

Author: Pereira, MFVT ; Williams, M ; Du Preez, WB Date: Oct 2010 The difficulties and issues associated with the economics of the process and die life in casting Aluminium alloys, as experienced by the high pressure die casting industry, were reasons behind undertaking this research project. The use of a ... Read more
Rheological assessment of titanium MIM feedstocks [Conference paper]

Author: Benson, JM ; Richter, W ; Chikwanda, HC Date: Oct 2010 Titanium is an exciting structural material that can offer significant strength-to-weight advantages over currently used alloys. However its Achilles heel is its cost energy intensive production process that effectively eliminates it from ... Read more
Ti-Mg alloy powder synthesis via mechanochemical reduction of TiO2 by elemental magnesium

Author: Mushove, T ; Chikwanda, HK ; Machio, Christopher N ; Ndlovu, S Date: Apr 2009 This paper reports the preliminary results of an investigation on the synthesis of a Ti-Mg alloy powder through mechanochemical processing of TiO2 and Mg powders. TiO2 was mixed with elemental Mg according to a nominal stoichiometric composition ... Read more
Titanium: the innovators metal. Historical case studies tracing titanium process and product innovation [Conference paper]

Author: Oosthuizen, SJ Date: Oct 2010 This paper examines innovation in relation to the availability of a new material, specifically the metal titanium. The paper aims to highlight the need for the inclusion of entrepreneurial innovation as a necessary focus area in the development ... Read more

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Browsing by Subject "Light metals"

Browsing by Subject "Light metals"

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