Application of unconstrained cobalt and aluminium metal powders in the alloying of carbon steel in submerged arc welding : thermodynamic analysis of gas reactions

Show simple item record

dc.contributor.author Coetsee, Theresa
dc.contributor.author De Bruin, Frederik
dc.date.accessioned 2023-08-01T11:10:39Z
dc.date.available 2023-08-01T11:10:39Z
dc.date.issued 2022-08-25
dc.description DATA AVAILABILITY STATEMENT : The data sets presented in this study are available upon request to the corresponding author. en_US
dc.description.abstract The application of cobalt and aluminium powders in unconstrained format, not as metal powder in tubular wire nor as pre-alloyed powder, is used in this work to simplify weld metal alloying. The objective of this study is to demonstrate the application of unconstrained cobalt and aluminium powders in Submerged Arc Welding SAW to alloy the weld metal and to control the weld metal oxygen content. Aluminium powder is used to control the oxygen potential at the weld poolslag interface in order to prevent oxidation of cobalt. The results presented here show that with the addition of Aluminium powder, 70% yield of Cobalt was achieved from the cobalt powder to the weld metal. The carbon steel base-plate material and weld wire materials combination were alloyed to 5.3% Co and 4.2% Al, whilst controlling the weld metal total oxygen content to 230 ppm. Thermodynamic analysis is applied to investigate the possible chemical interaction reactions between Co and Al compounds, as well as the role of the reactions on Co yield to the weld pool. The application of unconstrained metal powders ensures productivity gains in the overall SAW process because the time consuming and expensive manufacturing of alloyed wire and alloyed powder are eliminated. en_US
dc.description.department Materials Science and Metallurgical Engineering en_US
dc.description.librarian am2023 en_US
dc.description.sponsorship The National Research Foundation of South Africa. en_US
dc.description.uri https://www.mdpi.com/journal/applsci en_US
dc.identifier.citation Coetsee, T.; De Bruin, F. Application of Unconstrained Cobalt and Aluminium Metal Powders in the Alloying of Carbon Steel in Submerged ArcWelding: Thermodynamic Analysis of Gas Reactions. Applied Sciences 2022, 12, 8472. https://DOI.org/10.3390/app12178472. en_US
dc.identifier.issn 2076-3417 (print)
dc.identifier.other 10.3390/app12178472
dc.identifier.uri http://hdl.handle.net/2263/91755
dc.language.iso en en_US
dc.publisher MDPI en_US
dc.rights © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. en_US
dc.subject Pyrometallurgy en_US
dc.subject Powder en_US
dc.subject Cobalt en_US
dc.subject Oxygen control en_US
dc.subject Aluminium en_US
dc.subject Welding en_US
dc.title Application of unconstrained cobalt and aluminium metal powders in the alloying of carbon steel in submerged arc welding : thermodynamic analysis of gas reactions en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record