Browsing Research Articles (Materials Science and Metallurgical Engineering) by Author "De Bruin, Frederik"
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Browsing Research Articles (Materials Science and Metallurgical Engineering) by Author "De Bruin, Frederik"
Now showing items 1-8 of 8
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-05)Nickel alloying of carbon steel is used to enhance steel strength and toughness. Nickel alloying of the weld metal via solid weld wire presents several difficulties as highlighted previously, such as work hardening of ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-02-24)Al assisted alloying of carbon steel in Submerged Arc Welding (SAW) by Al-Cr-Ti-Cu unconstrained metal powders is applied. A base case without metal powder additions is compared to two metal powder addition schedules, ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-11-02)Unconstrained metal powders of chromium and nickel, in combination with aluminium, were used in the submerged arc welding (SAW) process to simplify weld metal alloying. Unconstrained metal powders refer to non-alloyed ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-02-01)In submerged arc welding (SAW) of chromium containing steels, the chromium in the weld metal is usually sourced from weld wire. Manufacturing of precise weld wire compositions for alloying of the weld metal is expensive. ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-05-11)Flux formulations are specified to target chemical and physico-chemical parameters. Chemical parameters set flux element transfer behaviours and weld metal oxygen contents. Physicochemical parameters such as slag viscosity, ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-10-31)Chromium alloying of weld metal is usually accomplished via weld wire. This is done because chromium has a high affinity for oxygen and is therefore not easily transferred across the arc. The formation chromium (VI) is one ...
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Coetsee, Theresa; De Bruin, Frederik (MDPI, 2022-11-19)Aluminium metal is avoided as main reactant in submerged arc welding (SAW) because it is easily oxidised in this process. Aluminium is an effective de-oxidiser and can be used to prevent Cr and Co loss to the slag by ...
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Coetsee, Theresa; De Bruin, Frederik (Elsevier, 2024-03)Nano-strands form in fluoride-based slag during submerged arc welding (SAW) due to the re-condensation of gas species formed at high temperatures in the arc cavity. The SAW process is complex due to gas-slag-metal reactions ...
Now showing items 1-8 of 8