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Effect of in-situ heat treatment and process parameters on the laser-deposited IN718 microstructure and mechanical properties

Author: Masina, Bathusile N ; Skhosane, Besabakhe S ; Tlotleng, Monnamme Date: 2020 The 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
Effect of Laser Power on Material Efficiency, Layer Height and Width of Laser Metal Deposited Ti6Al4V

Author: Mahamood, RM ; Akinlabi, ET ; Shukla, M ; Pityana, Sisa L Date: Oct 2012 This 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
Evaluation of the microstructure and microhardness of laser-fabricated titanium aluminate coatings

Author: Tlotleng, Monnamme ; Lengopeng, T ; Pityana, Sisa L Date: Oct 2016 Titanium 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
Influence of laser power on microstructure of laser metal deposited 17-4 ph stainless steel

Author: Adeyemi, AA ; Akinlabi, ET ; Mahamood, RM ; Sanusi, KO ; Pityana, Sisa L ; Tlotleng, Monnamme Date: Sep 2017 The 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
Laser alloying of aluminium to improve surface properties - MSSA 2010

Author: Mabhali, Luyolo AB ; Pityana, Sisa L ; Sacks, N Date: Jul 2010 Aluminium 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
Laser cladding process development for high carbon steel substrates

Author: Lengopeng, T ; Botes, A ; Popoola, API Date: Nov 2014 This 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
Laser metal deposition of Ti6Al4V: A study on the effect of laser power on microstructure and microhardness

Author: Mahamood, RM ; Akinlabi, ET ; Shukla, M ; Pityana, Sisa L Date: Mar 2013 The 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
Material efficiency of laser metal deposited Ti6Al4V: Effect of laser power

Author: Mahamood, RM ; Akinlabi, ET ; Shukla, M ; Pityana, Sisa L Date: Feb 2013 The 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
Mechanical and microstructural evaluation of laser assisted cold sprayed bioceramic coatings: potential use for biomedical applications

Author: Tlotleng, Monnamme ; Akinlabi, E ; Shukla, M ; Pityana, Sisa L Date: Feb 2014 Coatings 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
Microstructural and mechanical evaluation of laser-assisted cold sprayed bio-ceramic coatings: potential use for biomedical applications

Author: Tlotleng, Monnamme ; Akinlabi, E ; Shukla, M ; Pityana, Sisa L Date: Feb 2014 Bio-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
Microstructures, hardness and bioactivity of hydroxyapatite coatings

Author: Tlotleng, Monnamme ; Akinlabi, E ; Shukla, M ; Pityana, Sisa L Date: Oct 2014 Hydroxyapatite (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

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Browsing by Subject "Laser power"

Browsing by Subject "Laser power"

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