Author:Arthur, Nana KKDate:Apr 2019The laser engineered net shaping (LENS) system was used for the laser based manufacturing of a test geometry used to assess the performance of additive manufacturing systems. This system was preferred over a selective laser melting (SLM) ...Read more
Author:Kumpaty, S; Coen, B; Coen, L; Tlotleng, Monnamme; Arthur, Nana KK; Pityana, Sisa LDate:Nov 2021Ti-6Al-4V is a common alloy known for its use in aerospace and/or biomedical applications. In this study, Mo has been employed to increase the biocompatibility of Ti-6Al-4V. Two samples of Ti-6Al-4V with layers of differing percentages of Mo ...Read more
Author:Motha, S; Lekoadi, Paul; Raji, SA; Skhosane, Basebakhe S; Pityana, Sisa L; Tlotleng, MonnammeDate:Jun 2022Titanium alloys have two primary phases (a + ß) that are attributed to the a-stabiliser (aluminium) and ß-stabiliser (niobium). The latter stabilisers shift a-phase to higher temperature while the former stabilisers shift the ß-phase to lower ...Read more
Author:Willemse, MG; Siyasiya, CW; Marais, D; Venter, AM; Arthur, Nana KKDate:Feb 2023Although additive manufacturing is fast gaining traction in the industrial world as a reputable manufacturing technique to complement traditional mechanical machining, it still has problems such as porosity and residual stresses in components ...Read more
Author:Alabi, S; Popoola, API; Popoola, OM; Mathe, Ntombizodwa R; Abdulwahab, MDate:Feb 2023Energy is a requisite factor for technological advancement and the economic development of any society. Currently, global energy demand and supply largel rely on fossil fuels. The use of fossil fuels as a source of energy has caused severe ...Read more
Author:Mrwata, K; Siyasiya, C; Arthur, Nana KKDate:Nov 2023This study investigated the influence of beta stabilizer niobium on the microstructure and hardness of Ti-6Al-4V. The relationship between increased the concentration of alloying elements into Ti-6Al-4V is generally associated with an increase ...Read more
Author:Booysen, TN; Jamiru, T; Adegbola, T; Arthur, Nana KKDate:Nov 2023Three-dimensional printing (3D), also known as metal additive manufacturing (MAM), fabricates parts or components from different feedstocks: wires, powders or sheets. This process differs from traditional manufacturing techniques such as ...Read more
Author:Arthur, Nana KK; Siyasiya, C; Pityana, Sisa L; Tlotleng, MonnammeDate:May 2021Alloy development opens the way to create new materials for specialized processes, and attain materials that are usually difficult to acquire. Property enhancements and part performance is achievable in an exciting new way when this technique ...Read more
Author:Malatji, N; Lengopeng, T; Pityana, Sisa L; Popoola, APDate:Feb 2021AlCrFeNiCuWx high entropy alloys were fabricated on 316 L stainless steel substrate using laser metal deposition technique. The microstructural and mechanical characteristics of these alloys were studied by advanced characterization techniques. ...Read more
Author:Aramide, B; Sadiku, R; Popoola, P; Pityana, Sisa L; Jamiru, TDate:May 2022The upgrade of the anti-wear property of steel base-plate for soil-working tools was done by depositing chromium–vanadium carbide deposits in situ via powder imbuement of FeCrV15 powder through laser cladding. The created specimens were exposed ...Read more
Author:Raji, SA; Popoola, API; Pityana, Sisa L; Monnamme, TlotlengDate:Mar 2021Intermetallics based on gamma titanium aluminide ( -TiAl) alloys are potential lightweight materials that can be used for high-temperature components. However, poor room temperature ductility hinders their full potential for producing components ...Read more
Author:Aramide, B; Sadiku, R; Popoola, P; Pityana, Sisa L; Jamiru, TDate:Jan 2022The enhancement of wear performance of steel baseplate for tillage application was carried out by manufacturing vanadium-chromium carbide coatings in situ by powder infusion of high carbon ferrochrome FeCrV15 powder through laser additive ...Read more
Author:Davoren, B; Sacks, N; Theron, MarithaDate:Jun 2021To assess if a WC-9.2wt%Monel 400 alloy properties could be improved using LENS, one alloy was deposited onto a heated substrate and a second alloy was subjected to laser remelting of the final deposited layer. Microstructural characterization ...Read more
Author:Raji, SA; Popoola, API; Pityana, Sisa L; Popoola, OM; Arthur, Nana KK; Tlotleng, MonnammeDate:Oct 2021Recently, laser additive manufacturing (LAM) technologies are increasingly being applied for producing components with excellent physical and mechanical properties in the aerospace, automotive and energy industries. This work is aimed at ...Read more
Author:Mathoho, Ipfi; Arthur, Nana KK; Tlotleng, MonnammeDate:Feb 2023The current study embarked on developing the H950 aging condition for 17-4 PH stainless steel that was manufactured through the DED process. The driving force for carrying out this study was that, when the H950 condition was applied to 17-4 ...Read more
Author:Moore, K; Kouprianoff, D; Louw, Daniel F; Yadroitsava, I; Yadroitsev, IDate:Dec 2023Delaminations and cracks are detrimental phenomena that hinder the quality of the final product in metal additive manufacturing. The effective use of other online monitoring systems that can detect these deformations and delaminations during ...Read more
Author:Sibisi, PN; Popoola, API; Arthur, Nana KK; Pityana, Sisa L; Popoola, OMDate:Oct 2019Direct Metal Laser Deposition (DMLD) processes such as LENS are gaining ground in commercial manufacturing processes of functional end-products. This is attributed to this process being popularized as a sustainable technology with the potential ...Read more