Author:Masina, Bathusile N; Skhosane, Besabakhe S; Tlotleng, MonnammeDate:2020The direct laser-deposited Inconel 718 (IN718) specimens were produced using 1073 nm, high power continuous wave (CW), IPG Ytterbium fibre laser and in-situ heat treatment. The laser power and in-situ heat treatment temperature were fixed ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Oct 2012This paper reports the effect of laser power on the optimum utilization of the powder material, the layer height and the width of the laser Metal Deposited Ti6Al4V. The Ti6Al4V powder was deposited on Ti6Al4V substrate using an Nd: YAG laser ...Read more
Author:Tlotleng, Monnamme; Lengopeng, T; Pityana, Sisa LDate:Oct 2016Titanium aluminide intermetallics are very brittle at room temperature, hence they are challenging to fabricate even by conventional manufacturing techniques such as casting and forging. The production of TiAl from elemental powders using ...Read more
Author:Adeyemi, AA; Akinlabi, ET; Mahamood, RM; Sanusi, KO; Pityana, Sisa L; Tlotleng, MonnammeDate:Sep 2017The influence of laser power on the microstructure of 17-4 PH stainless steel produced by laser metal deposition was investigated. Multiple-trackof 17-4 stainless steel powder was deposited on 316 stainless steel substrate using laser metal ...Read more
Author:Mabhali, Luyolo AB; Pityana, Sisa L; Sacks, NDate:Jul 2010Aluminium is vastly used in industry due to its low cost, light weight and excellent workability, but lacks in wear resistance and hardness. Laser alloying is used to improve the surface properties such as hardness by modifying the composition ...Read more
Author:Lengopeng, T; Botes, A; Popoola, APIDate:Nov 2014This paper evaluates the effect of process parameters (laser power and scanning velocity) on clad layer height, heat affected zone (HAZ) width, metallurgical bonding to base metal and Vickers microhardness profiles of clad layers of various ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Mar 2013The effect of laser power on the resulting microstructure and microhardness of laser metal deposited Ti6Al4V powder on Ti6Al4V substrate has been investigated. The tracks were deposited using 99.6 % pure Ti6Al4V powder of particle size ranging ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Feb 2013The economy of using Laser Metal Deposition (LMD) process in the manufacturing of aerospace parts depends on the right processing parameters. LMD is an additive manufacturing technology capable of producing complex parts directly from the CAD ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Feb 2014Coatings of commercial pure titanium (CP)-Ti and HAP bio-ceramic were synthesised on Ti-6Al-4V substrate using laser assisted cold spray (LACS) deposition technique. The LACS system comprised of 4.4 kW Nd:YAG laser system, AT-12000HPHV 5000PSI ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Feb 2014Bio-composite coatings of 20 wt.%, HAP and 80 wt.%, HAP were synthesized on Ti-6Al-4V substrates using LACS technique. The coatings were produced with a laser power of 2.5 kW, powder-laser spot trailing by 5 s. The coatings were analyzed for ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Oct 2014Hydroxyapatite (HAP) coatings on bioinert metals such as Ti–6Al–4V are necessary for biomedical applications. Together, HAP and Ti–6Al–4V are biocompatible and bioactive. The challenges of depositing HAP on Ti–6Al–4V with traditional thermal ...Read more