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Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process

MEGAN KENDALL, Mark Coleman, Hollie Cockings, Elizabeth Sackett Orcid Logo, Chris Owen, Michael Auinger Orcid Logo

Metals, Volume: 14, Issue: 12, Start page: 1402

Swansea University Authors: MEGAN KENDALL, Elizabeth Sackett Orcid Logo

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DOI (Published version): 10.3390/met14121402

Abstract

Conveyance tube manufacturing via a hot-finished, welded route is an energy-intensive process which promotes rapid surface oxidation. During normalisation at approximately 950 °C to homogenise the post-weld microstructure, an oxide mill scale layer grows on tube outer surfaces. Following further the...

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Published in: Metals
ISSN: 2075-4701
Published: MDPI AG 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa68478
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last_indexed 2025-01-16T20:49:56Z
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spelling 2025-01-16T15:31:28.9996912 v2 68478 2024-12-06 Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process ee48db3814a5a01c393f5ec660184883 MEGAN KENDALL MEGAN KENDALL true false 55d1695a53656de6b0bdfa4c08d8bcd4 0000-0002-5975-6967 Elizabeth Sackett Elizabeth Sackett true false 2024-12-06 Conveyance tube manufacturing via a hot-finished, welded route is an energy-intensive process which promotes rapid surface oxidation. During normalisation at approximately 950 °C to homogenise the post-weld microstructure, an oxide mill scale layer grows on tube outer surfaces. Following further thermomechanical processing, there is significant yield loss of up to 3% of total feedstock due to scale products, and surface degradation due to inconsistent scale delamination. Delaminated scale is also liable to contaminate and damage plant tooling. The computational thermochemistry software, Thermo-Calc 2023b, with its diffusion module, DICTRA, was explored for its potential to investigate oxidation kinetics on curved geometries representative of those in conveyance tube applications. A suitable model was developed using the Stefan problem, bespoke thermochemical databases, and a numerical solution to the diffusion equation. Oxide thickness predictions for representative curved surfaces revealed the significance of the radial term in the diffusion equation for tubes of less than a 200 mm inner radius. This critical value places the conveyance tubes’ dimensions well within the range where the effects of a cylindrical coordinate system on oxidation, owing to continuous surface area changes and superimposed diffusion pathways, cannot be neglected if oxidation on curved surfaces is to be fully understood. Journal Article Metals 14 12 1402 MDPI AG 2075-4701 Oxidation; modelling; steel; diffusion; heat treatment 7 12 2024 2024-12-07 10.3390/met14121402 COLLEGE NANME COLLEGE CODE Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) This research was funded by COATED M2A from the European Social Fund via the Welsh Government (c80816), the Engineering and Physical Sciences Research Council (Grant Ref: EP/S02252X/1), and Tata Steel. 2025-01-16T15:31:28.9996912 2024-12-06T11:51:59.5986888 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering MEGAN KENDALL 1 Mark Coleman 2 Hollie Cockings 3 Elizabeth Sackett 0000-0002-5975-6967 4 Chris Owen 5 Michael Auinger 0000-0001-8726-6511 6 68478__33174__1d0e248c640b4db8b01e70a128efc7d4.pdf 68478.VOR.pdf 2024-12-18T11:45:01.2509294 Output 5252159 application/pdf Version of Record true © 2024 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. true eng https://creativecommons.org/licenses/by/4.0/
title Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
spellingShingle Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
MEGAN KENDALL
Elizabeth Sackett
title_short Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
title_full Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
title_fullStr Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
title_full_unstemmed Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
title_sort Computational Thermochemistry for Modelling Oxidation During the Conveyance Tube Manufacturing Process
author_id_str_mv ee48db3814a5a01c393f5ec660184883
55d1695a53656de6b0bdfa4c08d8bcd4
author_id_fullname_str_mv ee48db3814a5a01c393f5ec660184883_***_MEGAN KENDALL
55d1695a53656de6b0bdfa4c08d8bcd4_***_Elizabeth Sackett
author MEGAN KENDALL
Elizabeth Sackett
author2 MEGAN KENDALL
Mark Coleman
Hollie Cockings
Elizabeth Sackett
Chris Owen
Michael Auinger
format Journal article
container_title Metals
container_volume 14
container_issue 12
container_start_page 1402
publishDate 2024
institution Swansea University
issn 2075-4701
doi_str_mv 10.3390/met14121402
publisher MDPI AG
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description Conveyance tube manufacturing via a hot-finished, welded route is an energy-intensive process which promotes rapid surface oxidation. During normalisation at approximately 950 °C to homogenise the post-weld microstructure, an oxide mill scale layer grows on tube outer surfaces. Following further thermomechanical processing, there is significant yield loss of up to 3% of total feedstock due to scale products, and surface degradation due to inconsistent scale delamination. Delaminated scale is also liable to contaminate and damage plant tooling. The computational thermochemistry software, Thermo-Calc 2023b, with its diffusion module, DICTRA, was explored for its potential to investigate oxidation kinetics on curved geometries representative of those in conveyance tube applications. A suitable model was developed using the Stefan problem, bespoke thermochemical databases, and a numerical solution to the diffusion equation. Oxide thickness predictions for representative curved surfaces revealed the significance of the radial term in the diffusion equation for tubes of less than a 200 mm inner radius. This critical value places the conveyance tubes’ dimensions well within the range where the effects of a cylindrical coordinate system on oxidation, owing to continuous surface area changes and superimposed diffusion pathways, cannot be neglected if oxidation on curved surfaces is to be fully understood.
published_date 2024-12-07T14:42:22Z
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