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Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes
Mechanical and corrosion properties of welded duplex stainless steel (DSS) structures are of paramount consideration in many engineering applications. The current research investigates the mechanical properties and corrosion integrity of duplex stainless-steel weldment in a simulated 3.5% NaCl envir...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794832/ https://www.ncbi.nlm.nih.gov/pubmed/36575290 http://dx.doi.org/10.1038/s41598-022-26974-6 |
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author | Omiogbemi, Ibrahim Momoh-Bello Yawas, Danjuma Saleh Das, Atanu Afolayan, Matthew Olatunde Dauda, Emmanuel Toi Kumar, Roshan Gorja, Sudhakar Rao Chowdhury, Sandip Ghosh |
author_facet | Omiogbemi, Ibrahim Momoh-Bello Yawas, Danjuma Saleh Das, Atanu Afolayan, Matthew Olatunde Dauda, Emmanuel Toi Kumar, Roshan Gorja, Sudhakar Rao Chowdhury, Sandip Ghosh |
author_sort | Omiogbemi, Ibrahim Momoh-Bello |
collection | PubMed |
description | Mechanical and corrosion properties of welded duplex stainless steel (DSS) structures are of paramount consideration in many engineering applications. The current research investigates the mechanical properties and corrosion integrity of duplex stainless-steel weldment in a simulated 3.5% NaCl environment using specially developed novel electrodes without the addition of alloying elements to the flux samples. Two different types of fluxes having basicity indexes of 2.40 and 0.40 were used to coat E1 and E2 electrodes respectively for DSS plate welding. The thermal stability of the formulated flux was evaluated using thermogravimetric analysis. The chemical composition, using optical emission spectroscopy, and the mechanical and corrosion properties of the welded joints were evaluated as per different ASTM standards. X-ray diffraction was used to find out the phases present in the DSS welded joints while a scanning electron equipped with EDS was used for microstructural examination of the weldments. The ultimate tensile strength of welded joints made using the E1 electrode was in the range of 715–732 MPa and that of the E2 electrode was found to be 606–687 MPa. The hardness was increased with increased welding current from 90 to 110 A. The welded joint with E1 electrode coated with basic flux has better mechanical properties. The steel structure in 3.5% NaCl environment possesses substantial resistance to corrosion attack. This validates the performance of the welded joints made by the newly developed electrode. The results are discussed on the basis of the depletion of alloying elements such as Cr and Mo observed from the weldments with the coated electrodes E1 and E2 as well as precipitation of the Cr(2)N in the welded joints made by E1 and E2 electrodes. |
format | Online Article Text |
id | pubmed-9794832 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-97948322022-12-29 Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes Omiogbemi, Ibrahim Momoh-Bello Yawas, Danjuma Saleh Das, Atanu Afolayan, Matthew Olatunde Dauda, Emmanuel Toi Kumar, Roshan Gorja, Sudhakar Rao Chowdhury, Sandip Ghosh Sci Rep Article Mechanical and corrosion properties of welded duplex stainless steel (DSS) structures are of paramount consideration in many engineering applications. The current research investigates the mechanical properties and corrosion integrity of duplex stainless-steel weldment in a simulated 3.5% NaCl environment using specially developed novel electrodes without the addition of alloying elements to the flux samples. Two different types of fluxes having basicity indexes of 2.40 and 0.40 were used to coat E1 and E2 electrodes respectively for DSS plate welding. The thermal stability of the formulated flux was evaluated using thermogravimetric analysis. The chemical composition, using optical emission spectroscopy, and the mechanical and corrosion properties of the welded joints were evaluated as per different ASTM standards. X-ray diffraction was used to find out the phases present in the DSS welded joints while a scanning electron equipped with EDS was used for microstructural examination of the weldments. The ultimate tensile strength of welded joints made using the E1 electrode was in the range of 715–732 MPa and that of the E2 electrode was found to be 606–687 MPa. The hardness was increased with increased welding current from 90 to 110 A. The welded joint with E1 electrode coated with basic flux has better mechanical properties. The steel structure in 3.5% NaCl environment possesses substantial resistance to corrosion attack. This validates the performance of the welded joints made by the newly developed electrode. The results are discussed on the basis of the depletion of alloying elements such as Cr and Mo observed from the weldments with the coated electrodes E1 and E2 as well as precipitation of the Cr(2)N in the welded joints made by E1 and E2 electrodes. Nature Publishing Group UK 2022-12-27 /pmc/articles/PMC9794832/ /pubmed/36575290 http://dx.doi.org/10.1038/s41598-022-26974-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Omiogbemi, Ibrahim Momoh-Bello Yawas, Danjuma Saleh Das, Atanu Afolayan, Matthew Olatunde Dauda, Emmanuel Toi Kumar, Roshan Gorja, Sudhakar Rao Chowdhury, Sandip Ghosh Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title | Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title_full | Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title_fullStr | Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title_full_unstemmed | Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title_short | Mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
title_sort | mechanical properties and corrosion behaviour of duplex stainless steel weldment using novel electrodes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794832/ https://www.ncbi.nlm.nih.gov/pubmed/36575290 http://dx.doi.org/10.1038/s41598-022-26974-6 |
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