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Browsing Research Articles (Materials Science and Metallurgical Engineering) by UP Author

Browsing Research Articles (Materials Science and Metallurgical Engineering) by UP Author "Moller, Heinrich"

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Characterization of 17-4ph single tracks produced at different parametric conditions towards increased productivity of lpbf systems—the effect of laser power and spot size upscaling

Makoana, Nkutwane Washington; Yadroitsava, Ina; Moller, Heinrich; Yadroitsev, Igor (MDPI Publishing, 2018-06-22)

Global industrial adoption of laser-based powder bed fusion (LPBF) technology is still limited by the production speed, the size of the build envelope, and therefore the maximum part size that can be produced. The cost of ...
Characterization of surface roughness and subsurface pores and their effect on corrosion in 3D-printed AlSi10Mg

Thuketana, Susan; Taute, Carlien; Moller, Heinrich; Du Plessis, A. (Southern African Institute of Mining and Metallurgy, 2020-06)

Denel Dynamics, a South African armaments development and manufacturing company, is interested in introducing additive manufacturing (AM) in the fabrication of missile components. The practicality of using AM for industrial ...
J-integral evaluation of repaired cracks in AA7075-T6 structures subjected to uniaxial tensile stresses

Zouambi, Leila; Khodja, Malika; Oudad, Wahid; Fekirini, Hamida; Moller, Heinrich; Bouiadjra, Belabbes Bachir (Elsevier, 2019-08)

Bonded repairs using composite patches over metallic structures have been evaluated as a cost effective method to increase the life of damaged structures. The J-integral is a widely applied fracture mechanics parameter ...
Microstructure and mechanical properties of selective laser melted Ti-3Al-8V-6Cr-4Zr-4Mo compared to Ti-6Al-4V

Madikizela, C.; Cornish, Lesley A.; Chown, Lesley H.; Moller, Heinrich (Elsevier, 2019-02)

Beta Ti-alloys are known for their high fracture toughness and ductility, and are used in applications where these properties are needed, such as the aerospace and biomedical industries. The selective laser melting of the ...
Overageing characteristics of alloy a356 and al-mg-si casting alloys

Daswa, Pfarelo; Moller, Heinrich; Govender, Gonasagren (Trans Tech Publications, 2019)

l-Si-Mg casting alloys, such as Al-7Si-0.3Mg alloy A356, are heat treatable and can be precipitation hardened to the T6 temper condition. However, Al-Mg-Si casting alloys (5xx series) are generally not considered to be ...
Pore closure effect of laser shock peening of additively manufactured AlSi10Mg

Du Plessis, Anton; Glaser, Daniel; Moller, Heinrich; Mathe, Ntombizodwa; Tshabalala, Lerato; Mfusi, Busisiwe; Mostert, Roelf Johannes (Mary Ann Liebert, 2019-10)

This article reports on an exceptional insight provided by nondestructive X-ray tomography of the same samples before and after laser shock peening (LSP). The porosity in two additively manufactured aluminum alloy (AlSi10Mg) ...
Studying the microstructural effect of selective laser melting and electropolishing on the performance of maraging steel

Ahmadkhaniha, D.; Moller, Heinrich; Zanella, C. (Springer, 2021-09)

Selective laser melting is one of the additive manufacturing technologies that have been known for building various and complicated shapes. Despite numerous advantages of additive manufacturing technologies, they strongly ...

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Browsing Research Articles (Materials Science and Metallurgical Engineering) by UP Author "Moller, Heinrich"

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