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Browsing by Author "Hoosain, Shaik E"

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A comparative study on laser processing of commercially available titanium aluminide (TI-48AL-2CR-2NB) and in-situ alloying of titanium aluminide

Author: Hoosain, Shaik E ; Pityana, Sisa L ; Tlotleng, Monnamme ; Legopeng, T Date: Nov 2017 Titanium aluminides (TiAl) are acknowledged as promising high temperature structural materials due to their high melting point, high strength to density, high elastic modulus and high creep strength. Due to their low ductility, it is difficult ... Read more
Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

Author: Olakanmi, EO ; Malikongwa, K ; Nyadongo, ST ; Hoosain, Shaik E ; Pityana, Sisa L Date: Jul 2020 The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (a) on the other hand are examined. A laser-material interaction parameter ... Read more
Development of contour scanning parameters to improve surface finishing of additive manufactured parts

Author: Hoosain, Shaik E Date: Oct 2017 Additive manufacturing (AM), widely known as 3D printing, is a method of manufacturing that forms parts from powder, wire or sheets in a process that proceeds layer by layer. Many techniques have been developed to accomplish this via melting ... Read more
Effect of energy density on the consolidation mechanism and microstructural evolution of laser cladded functionally-graded composite Ti-Al system

Author: Olakanmi, EO ; Sepako, M ; Morake, J ; Kutua, S ; Hoosain, Shaik E ; Pityana, Sisa L Date: Aug 2018 The engagement of additive manufacturing (AM) technology in developing intermetallic coatings involves additional heat treatment with a view to obtaining desirable microstructure and mechanical properties. This eventually increases the lead ... Read more
Effect of powder bed preheating on distortion and mechanical properties in high speed selective laser melting

Author: Motibane, Londiwe P ; Tshabalala, Lerato C ; Mathe, Ntombizodwa R ; Hoosain, Shaik E ; Knutsen, RD Date: Oct 2019 Selective Laser Melting (SLM) is known to cause residual stresses due to the inherent large thermal gradients from high heating and cooling rates during manufacturing. The residual stresses tend to induce distortion, delamination of parts ... Read more
Local heat treatment of a laser build-up

Author: Theron, Maritha ; Van Rooyen, Corney ; Malabi, Khorommbi P ; Hoosain, Shaik E Date: 2019 Laser cladding or laser metal deposition involves the deposition of any weldable material onto the surface of a metal substrate by means of a laser beam. Although clad deposits are fully fusion-joined to the substrate material, the very low ... Read more
Microstructural characteristics, crack frequency and diffusion kinetics of functionally graded Ti-Al composite coatings: Effects of Laser Energy Density (LED)

Author: Olakanmi, EO ; Sepako, M ; Morake, J ; Hoosain, Shaik E ; Pityana, Sisa L Date: Dec 2018 This study examines the dependence of microstructural characteristics, crack frequency and diffusion kinetics of functionally graded (FGM) titanium aluminide coatings reinforced with TiC on laser energy density (LED). Samples deposited on a ... Read more
Process and materials design for laser cladded inconel-625/tungsten carbide wear-resistant composite coatings

Author: Olakanm, EO ; Hoosain, Shaik E ; Lawal, SA ; Pityana, Sisa L Date: Jun 2022 Tailoring materials’ microstructural characteristics to meet mechanical functional requirements is quite critical in designing wear resistant coatings. To the best of our knowledge, no study had related carbide dissolution ratio (CDR) in laser ... Read more
Process and materials design via statistical modeling for Inconel-625/tungsten carbide wear-resistant composite coatings fabricated by laser direct metal deposition technique

Author: Olakanmi, EO ; Hoosain, Shaik E ; Lawal, SA ; Pityana, Sisa L Date: Mar 2023 It is critical that coating’s microstructural characteristics are designed to meet its wear-resistance functional requirement. To the best of our knowledge, no study had related carbide dissolution ratio (CDR) in laser deposited Inconel 625 ... Read more
Standard method for microCT-based additive manufacturing quality control 1: Porosity analysis

Author: Du Plessis, A ; Sperling, P ; Beerlink, A ; Tshabalala, Lerato C ; Hoosain, Shaik E ; Mathe, Ntombizodwa R ; Le Roux, SG Date: Sep 2018 MicroCT is a well-established technique that is used to analyze the interior of objects non-destructively, and it is especially useful for void or porosity analysis. Besides its widespread use, few standards exist and none for additive ... Read more
Standard method for microCT-based additive manufacturing quality control 2: Density measurement

Author: Du Plessis, A ; Sperling, P ; Beerlink, A ; Tshabalala, Lerato C ; Hoosain, Shaik E ; Mathe, Ntombizodwa R ; Le Roux, SG Date: Sep 2018 MicroCT is best known for its ability to detect and quantify porosity or defects, and to visualize its 3D distribution. However, it is also possible to obtain accurate volumetric measurements from parts – this can be used in combination with ... Read more
Standard method for microCT-based additive manufacturing quality control 3: Surface roughness

Author: Du Plessis, A ; Sperling, P ; Beerlink, A ; Kruger, O ; Tshabalala, Lerato C ; Hoosain, Shaik E ; Le Roux, SG Date: Sep 2018 The use of microCT of 10 mm coupon samples produced by AM has the potential to provide useful information of mean density and detailed porosity information of the interior of the samples. In addition, the same scan data can be used to provide ... Read more

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Browsing by Author "Hoosain, Shaik E"

Browsing by Author "Hoosain, Shaik E"

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