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Browsing Research Articles (Materials Science and Metallurgical Engineering) by Author "Annan, Kofi Ahomkah"

Now showing items 1-9 of 9

Austenite grain growth kinetics after isothermal deformation in microalloyed steels with varying Nb concentrations

Annan, Kofi Ahomkah; Stumpf, Waldo E. (Iron and Steel Institute of Japan, 2018-02-15)

Please read abstract in the article.
Development of a biocompatible Ti-Nb alloy for orthopaedic applications

Fikeni, L.; Annan, Kofi Ahomkah; Seerane, M.; Mutombo, K.; Machaka, R. (IOP Publishing, 2019-11-09)

Metallic biomedical implants such as titanium-based alloys are very useful for orthopaedic applications due to their excellent properties which responds to changes in temperature and other conditions. However, biological ...
Effect of thermal annealing on SHI irradiated indium implanted glassy carbon

Njoroge, Eric Gitau; Hlatshwayo, Thulani Thokozani; Mlambo, Mbuso; Odutemowo, Opeyemi Shakirah; Annan, Kofi Ahomkah; Skuratov, V.A.; Ismail, M.; Malherbe, Johan B. (Elsevier, 2021-09)

Please read abstract in the article.
Failure analysis of a 34CrMo4 seamless steel gas cylinder filled with a mixture of fluorine and nitrogen gases

Annan, Kofi Ahomkah; Njoroge, Eric Gitau; Siyasiya, Charles Witness; Mostert, R.J. (Roelf) (Elsevier, 2021-01)

A fifty litre seamless gas cylinder manufactured from a 34CrMo4 low carbon alloy steel which was in service for five years failed in an unexpected manner, causing severe damage. The cylinder was filled with a mixture of ...
Failure analysis of thin cast A357-T6 centre shell induced by casting defect

Annan, Kofi Ahomkah; Nkhoma, Richard; Siyasiya, Charles Witness; Mostert, R.J. (Roelf) (Elsevier, 2022)

Thin-walled Al-Si alloy precision casting components are used for various applications due to their excellent castability, corrosion resistance as well as high strength to weight ratio. It is very difficult to achieve all ...
Influence of milling parameters on the structural and phase formation in Ti-20%Al alloy through mechanical milling

Annan, Kofi Ahomkah; Daswa, P.; Motumbo, K.; Siyasiya, Charles Witness (Elsevier, 2021)

Titanium aluminides are considered the choice material for next generation propulsion systems due to their high specific strength and high temperature performance coupled with good oxidation resistance. They are considered ...
The influence of niobium content on austenite grain growth in microalloyed steels

Annan, Kofi Ahomkah; Siyasiya, Charles Witness; Stumpf, Waldo E. (Southern African Institute of Mining and Metallurgy, 2015-10)

The relationship between niobium content and austenite grain growth has been investigated through hot rolling simulation on a Bähr dilatometer. The effect of delay time between passes during rough rolling in Nbmicroall ...
Microstructures and phases analysis of the 60Al‑40V master alloy produced by the aluminothermic process

Mapoli, Tresor Okabo; Mutombo, Kalenda; Annan, Kofi Ahomkah; Siyasiya, Charles Witness (Springer, 2022-06)

Please read abstract in the article.
Preparation and microstructural characterization of the 60Al- 40V master alloy

Mapoli, Tresor Okabo; Annan, Kofi Ahomkah; Siyasiya, Charles Witness; Mutombo, Kalenda (IOP Publishing, 2019-11-09)

The present study focused on preparation and characterization of 60Al-40V master alloy which was produced via aluminothermic process. The study assessed the production in order to provide the optimum Al requirement for ...

Now showing items 1-9 of 9

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Browsing Research Articles (Materials Science and Metallurgical Engineering) by Author "Annan, Kofi Ahomkah"

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