Browsing Journal Articles by Author "Sacks, N"

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Crack mitigation in laser engineered net shaping of WC-10wt%FeCr cemented carbides

Author: Molobi, E ; Sacks, N ; Theron, Maritha Date: Apr 2022 Laser engineered net shaping of a WC-10wt%FeCr cemented carbide showed cracking during deposition despite using a full factorial design of experiments matrix along with single and multiple objective optimization models to establish an optimal ... Read more
Directed energy deposition of a cemented tungsten carbide rotary burr prototype

Author: Molobi, E ; Sacks, N ; Theron, Maritha Date: Nov 2021 In this study a cemented tungsten carbide rotary burr prototype was fabricated using directed energy deposition based on an optimal parameter set which was previously derived from a full factorial design of experiments matrix approach. Finite ... Read more
Impact toughness of laser alloyed aluminium AA1200 alloys

Author: Mabhali, Luyolo AB ; Pityana, Sisa L ; Sacks, N Date: Aug 2013 Laser surface alloying of aluminium AA1200 was performed with a 4kW Nd:YAG laser and impact resistance of the alloys was investigated. The alloying powders were a mixture of Ni, Ti and SiC in different proportions. Surfaces reinforced with ... Read more
Impact toughness of laser surface alloyed Aluminium

Author: Mabhali, Luyolo AB ; Sacks, N ; Pityana, Sisa L Date: Mar 2012 Laser surface alloying of aluminium AA1200 was performed with a 4kW Nd:YAG laser and the impact resistance of the alloys was investigated. The alloying powders were a mixture of Ni, Ti and SiC in different proportions. Surfaces reinforced ... Read more
Influence of z-increment on the build height, porosity and microstructure of laser deposited WC-10wt%FeCr thin walls

Author: Molobi, E ; Sacks, N ; Theron, Maritha Date: Oct 2021 The 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
Laser alloying of Al with mixed Ni, Ti and SiC powders

Author: Mabhali, Luyolo AB ; Pityana, Sisa L ; Sacks, N Date: Nov 2010 Laser alloying of aluminium AA1200 was performed with a 4.4kW Rofin Sinar Nd:YAG laser to improve the surface hardness. Alloying was carried out by depositing Ni, Ti and SiC powders of different weight ratios on the aluminium substrate. The ... Read more
Laser surface alloying of aluminum (AA1200) with Ni and SiC Powders

Author: Mabhali, Luyolo AB ; Pityana, Sisa L ; Sacks, N Date: Dec 2010 An Nd:YAG laser was used for surface alloying of aluminum AA1200. The alloying powder was a mixture of Ni and SiC in different ratios. A study of the microstructures obtained after alloying was conducted using optical and scanning electron ... Read more
Microstructure characterization of WC-9.2wt%Monel 400 fabricated using laser engineered net shaping using laser engineered net shaping

Author: Davoren, B ; Sacks, N ; Theron, Maritha Date: Jun 2021 To assess if a WC-9.2wt%Monel 400 alloy properties could be improved using LENS, one alloy was deposited onto a heated substrate and a second alloy was subjected to laser remelting of the final deposited layer. Microstructural characterization ... Read more
Three body abrasion of laser surface alloyed aluminium AA1200

Author: Mabhali, Luyolo AB ; Sacks, N ; Pityana, Sisa L Date: Jun 2012 Laser surface alloying of aluminium AA1200 was performed with a 4 kW Nd:YAG laser to improve the abrasion wear resistance. Aluminium surfaces reinforced with metal matrix composites and intermetallic phases were achieved. The phases present ... Read more

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Browsing Journal Articles by Author "Sacks, N"

Browsing Journal Articles by Author "Sacks, N"

Browse

All of ResearchSpace

This Collection

Quick Links

Legislation and compliance

General Enquiries

Social Connect