• Characterization of 17-4ph single tracks produced at different parametric conditions towards increased productivity of lpbf systems—the effect of laser power and spot size upscaling 

  Makoana, Nkutwane Washington; Yadroitsava, Ina; Moller, Heinrich; Yadroitsev, Igor (MDPI Publishing, 2018-06-22)

  Global industrial adoption of laser-based powder bed fusion (LPBF) technology is still limited by the production speed, the size of the build envelope, and therefore the maximum part size that can be produced. The cost of ...
• Phase equilibria and thermodynamic evaluation of the Fe-V-O system in air 

  Malan, Willem Dutoit; Akdogan, Guven; Taskinen, Pekka; Hamuyuni, Joseph; Zietsman, Johannes Hendrik (Elsevier, 2018-12)

  Please read abstract in the article.
• Engineering education : an integrated problem-solving framework for discipline-specific professional development in mining engineering 

  Haupt, Maria Margaretha Catharina (Grietjie); Webber-Youngman, R.C.W. (Southern African Institute of Mining and Metallurgy, 2018-01)

  This article is based on the premise that the purpose of engineering education, in general, is to deliver engineering practitioners who are intellectually capable of identifying, structuring, and solving complex problems, ...
• Microstructural characterisation of laser beam and gas tungsten arc welded zirconium-2.5Nb 

  Mahlalela, S.S. (Sibusiso); Pistorius, P.G.H. (Pieter) (Southern African Institute of Mining and Metallurgy, 2017-10)

  The current study is intended to characterise the complex microstructure that results from autogenous welding of Zr-2.5Nb and its influence on mechanical properties. Laser beam welding (LBW) and gas tungsten arc welding ...
• Structure-property orientation relationship of a γ/α2/Ti5Si3 in as-cast Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy 

  Mathabathe, M.N.; Bolokang, A.S.; Govender, G.; Mostert, R.J. (Roelf); 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 ...
• Austenite grain growth kinetics after isothermal deformation in microalloyed steels with varying Nb concentrations 

  Annan, Kofi Ahomkah; Stumpf, Waldo E. (Iron and Steel Institute of Japan, 2018-02-15)

  Please read abstract in the article.
• Accurate measurement of polarization potentials during electrodeposition of nickel metal from sulphate electrolytes 

  Schoeman, Liezl; Sole, K.C. (Kathryn) (Southern African Institute of Mining and Metallurgy, 2017-07)

  Extraction of nickel from either laterite or sulphide ores involves various complex hydrometallurgical processes, the final step of which is often electrowinning to produce pure nickel metal. Methods to investigate, monitor, ...
• The vacuum melted ɣ-TiAl (Nb, Cr, Si)-doped alloys and their cyclic oxidation properties 

  Mathabathe, M.N.; Bolokang, A.S.; Govender, S.; Mostert, R.J. (Roelf); 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 ...
• Phase transformation and microstructural control of the α-solidifying γ-Ti-45Al-2Nb-0.7Cr-0.3Si intermetallic alloy 

  Mathabathe, M.N.; Govender, S.; Bolokang, A.S.; Mostert, R.J. (Roelf); 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 ...
• Identifying critical parameters in the settling of African kimberlites 

  Boshoff, E.T.; Morkel, Jacqueline; Naude, Natasia (Taylor and Francis, 2018)

  Kimberlite is the host rock of diamonds and varies widely in geological and mineralogical features as well as color, processing capability, and dewatering characteristics. This study investigated the dewatering behavior ...
• Upgrade of SLon concentrate with the use of froth flotation on a typical African iron ore 

  Kruger, M.; Naik, S.; Naude, Natasia (Taylor and Francis, 2018)

  This study focus on the upgrading of SLon concentrates, of a complex African iron ore, with the aid of flotation. Mineralogical studies indicated that the +38µm material was not liberated and required milling prior to ...
• MnO reduction in high carbon ferromanganese production: practice and theory 

  Coetsee, Theresa (Taylor and Francis, 2018-04)

  The SAF (submerged arc furnace) process is most widely used for industrial production of high carbon ferromanganese. Most plants use ore feed in the form of lump ore (−75 mm +6 mm), but long term supply is limited, and ...
• The effect of processing parameters on ferromanganese alloy carbon content in Mamatwan ore reduction 

  Coetsee, Theresa (Taylor and Francis, 2017-01)

  Industrial production of medium carbon ferromanganese is accomplished by decarburization of high carbon ferromanganese in an oxygen blown converter. In this study, the possible in situ refinement of high carbon ferromanganese ...
• Modeling of work hardening during hot rolling of vanadium and niobium microalloyed steels in the low temperature austenite region 

  Chalimba, S.A. (Stephen Akonda); Mostert, R.J. (Roelf); Stumpf, Waldo E.; Siyasiya, Charles Witness; Banks, K.M. (Kevin) (Springer, 2017-11)

  This work extends the application of the well-established Estrin and Mecking (EM) work-hardening model in unstable low temperature austenite region. The interaction between work hardening, recovery and softening attributed ...
• How to sustain mineral resources : beneficiation and mineral engineering opportunities 

  De Villiers, J.P.R. (Johan) (Mineralogical Society of America, 2017-10)

  The sustainability of a mineral resource depends, among other aspects, on what the mineral in question will be used for, price fluctuations, future resource requirements, and downstream manufacturing. A balance must be ...
• Roughing of thick, coarse-grained high-temperature-processing steels processed via compact strip production 

  Banks, K.M. (Kevin); Tuling, Alison; Maubane, Dannis Rorisang Nkarapa (Iron and Steel Institute of Japan, 2017)

  The roughing conditions required to avoid local heterogeneous regions in the final microstructure of high temperature processing (HTP) Nb linepipe steels have been investigated for quasi-compact strip production (CSP) ...
• Effects of roughing on finish rolling simulations in microalloyed strip steels 

  Chalimba, S.A. (Stephen Akonda); Mostert, R.J. (Roelf); Stumpf, Waldo E.; Siyasiya, Charles Witness; Banks, K.M. (Kevin) (Springer, 2017-11)

  Please read abstract in the article.
• Influence of a carboxymethyl cellulose (CMC) binder on the mechanical properties of iron ore pellets 

  Van der Merwe, M.C.J.; Garbers-Craig, Andrie Mariana (Southern African Institute of Mining and Metallurgy, 2017-04)

  Carboxymethyl cellulose is an organic binder used in the iron ore pelletizing industry. The basic principles of how carboxymethyl cellulose (CMC) solutions behave during the pelletizing process and how these principles ...
• The effect of coating parameters and annealing on the crushing strength of TRISO coated particles 

  Hancke, J.J.; Van Rooyen, Gerrit T.; De Villiers, J.P.R. (Johan) (American Nuclear Society, 2013-04)

  The crushing strength (load at fracture) of coated particles was measured by compression between soft metal anvils. The method requires no sample preparation and can be used as a quality control method as well as a valuable ...
• Repair welding of carbon steel that has been partially graphitized during service 

  Kruger, K.J.; Pistorius, P.G.H. (Pieter); Orsmond C.P.M. (Springer, 2017-06)

  Plain carbon steels that are in service at elevated temperatures (typically 400-450 °C) for prolonged periods of time (typically in excess of 20 years) may experience graphitization, often in the heat affected zone (HAZ). ...

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