Author:Bester, Duwan C; Tshabalala, Lerato CDate:Nov 2021The adoption of Additive manufacturing (AM) in South Africa has grown significantly, with more industries investing and investigating the possibility of adoption to their operations. Some of these industries are the railway and mining industries, ...Read more
Author:Aramide, B; Popoola, P; Sadiku, R; Jamiru, T; Pityana, Sisa LDate:Nov 2021Laser cladding is an additive manufacturing technology utilised in surface strengthening, modification, and repair of components subjected to adverse working conditions, such as tillage tools, which is accomplished by adding functionally ...Read more
Author:Mathoho, Ipfi; Sibisi, TDate:Jan 2024The quality and performance of additively manufactured part is linked to the process parameters such as laser power, scanning speed, powder feed rate, and layer thickness. However, hatch spacing is one of the process parameters that affect ...Read more
Author:Raji, SA; Pityana, Sisa L; Popoola, API; Popoola, OM; Arthur, Nana KK; Tlotleng, MonnammeDate:Oct 2021In this work, the microstructure and nanoindentation hardness properties of Ti-Al-Si-xMo alloys produced through laser in-situ alloying using laser engineered net shaping (LENS) technology were investigated. The microstructures and phases ...Read more
Author:Aramide, B; Pityana, Sisa L; Jamiru, T; Popoola, P; Sadiku, RDate:Aug 2021The increasing manufacturing technologies are a crucial aspect of industrialization. Laser additive manufacturing is the process of manufacturing using laser (heat) technology to manufacture components from scratch and or strengthening and ...Read more
Author:Molobi, E; Sacks, N; Theron, MarithaDate:Oct 2021The influence of z-increment on profile, porosity and microstructure of WC-10wt%FeCr single walls deposited using direct energy deposition was studied. Traverse speeds of 3.2 and 6.4 mm/s were used, while laser power was varied at 200, 300 ...Read more
Author:Tlotleng, Monnamme; Pityana, Sisa L; Motha, SDate:May 2023The effects of micro-alloying gamma titanium aluminide ( -TiAl) with niobium (Nb) using a laser melt pool as a melting pot are reported. The Optomec LENS machine was used to carry out the laser in situ alloying experiments where Nb, ranging ...Read more
Author:Dada, M; Popoola, P; Mathe, Ntombizodwa R; Adeosun, S; Pityana, Sisa LDate:Sep 2021Using a focused ion beam TTX-NHT3 Nanoindentation tester with a load of 500 mN, we study the micromechanical properties of laser-deposited AlCoCrFeNiCu high entropy alloy coatings. The indentation tests conducted were used to examine the ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Feb 2020The investigation of microstructural and hardness properties of high-speed selective laser melted (SLM) produced Ti6Al4V coupons after various heat treatments. Heat treatment was performed in order to homogenize and improve the microstructure ...Read more
Author:Nomqonde, BH; Mashinini, PM; Lekoadi, Paul M; Masina, Bathusile NDate:Nov 2022This study investigated the microstructure evolution of the TiC/Ti-6Al-4V matrix composite produced using a 1073 nm continuous wave (CW), IPG Ytterbium fibre laser. The influence of thermal gradient, overlap, and re-melting of the previous ...Read more
Author:Hoosain, SE; Tshabalala, Lerato C; Skhosana, Besabakhe S; Freemantle, C; Mndebele, NDate:Nov 2021One of the main considerations in adopting the additive manufacturing (AM) technology is whether the material properties of the AM-produced part are comparable with the wrought material. This study compared the properties of AM-produced 304 ...Read more
Author:Lekoadi, Paul M; Tlotleng, Monnamme; Siyasiya, Charles; Masina, Bathusile NDate:Nov 2023This study presents the investigation of TiB distribution characteristics on the microstructure of in-situ synthesized TiB/Ti6Al4V single-track composites manufacture with laser metal deposition. Ti6Al4V alloy was reinforced by adding TiB2 ...Read more
Author:Lekoadi, Paul M; Tlotleng, Monnamme; Siyasiya, CW; Masina, Bathusile NDate:May 2023This work presents the microstructural investigation of an in situ synthesized TiB/Ti6Al4V-ELI composite that was manufactured with additive manufacturing (AM) technique known as laser metal deposition (LMD). A single-track sample was ...Read more
Author:Nyadongo, ST; Pityana, Sisa L; Olakanmi, EODate:Jul 2021It is anticipated that laser cladding assisted with preheat (LCAP)-deposited Tribaloy (T-800) composite coatings enhances resistance to structural degradation upon exposure to elevated-temperature oxidation service environments. The oxidation ...Read more
Author:Sibisi, TH; Shongwe, MB; Tshabalala, Lerato C; Mathoho, IpfiDate:Aug 2023A cutting-edge manufacturing technology that uses powder or wire as the feeding material and a high-energy heating source is known as metal additive manufacturing (AM). High-performance components for automotive, aerospace, medical, and energy ...Read more