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Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement

Sathiskumar Jothi Orcid Logo, Nick Croft Orcid Logo, L. Wright, A. Turnbull, Steve Brown

International Journal of Hydrogen Energy, Volume: 40, Issue: 43, Pages: 15105 - 15123

Swansea University Authors: Sathiskumar Jothi Orcid Logo, Nick Croft Orcid Logo, Steve Brown

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DOI (Published version): 10.1016/j.ijhydene.2015.08.093

Abstract

Premature failure in polycrystalline materials due to hydrogen absorption affects a wide range of applications, including clean energy systems, hydrogen storage systems and rocket engines. A good understanding of the diffusion and trapping processes within such materials can inform material choices...

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Published in: International Journal of Hydrogen Energy
ISSN: 0360-3199
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa23524
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first_indexed 2015-10-02T02:09:19Z
last_indexed 2020-12-18T03:37:47Z
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spelling 2020-12-17T11:03:19.4111959 v2 23524 2015-10-01 Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement 6cd28300413d3e63178f0bf7e2130569 0000-0001-7328-1112 Sathiskumar Jothi Sathiskumar Jothi true false 8f82cd0b51f4b95b0dd6fa89427d9fc7 0000-0002-1521-5261 Nick Croft Nick Croft true false 07a865adc76376646bc6c03a69ce35a9 Steve Brown Steve Brown true false 2015-10-01 EEN Premature failure in polycrystalline materials due to hydrogen absorption affects a wide range of applications, including clean energy systems, hydrogen storage systems and rocket engines. A good understanding of the diffusion and trapping processes within such materials can inform material choices and component design to reduce the likelihood of such failures. Grain boundary segregation of hydrogen can often lead to intergranular hydrogen embrittlement (IHE). Hydrogen diffusion is affected by local microstructural features including intergranular second phase precipitates, grain boundary (GB) thicknesses and geometrically necessary dislocation (GND) density. A multi-scale multi-phase model is presented here that has been developed to study GBSE with respect to hydrogen diffusion and IHE. The results of various multi-scale GBSE models with and without traps (including the effects of microstructure, intergranular precipitate phases and GB thickness) are compared and discussed, and the effects of microstructural parameters such as hydrogen segregation factor and GND trapping density on hydrogen diffusion are investigated. Journal Article International Journal of Hydrogen Energy 40 43 15105 15123 0360-3199 Hydrogen embrittlement; Microstructures; Metallic polycrystalline material; User element; Finite element analysis 16 11 2015 2015-11-16 10.1016/j.ijhydene.2015.08.093 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2020-12-17T11:03:19.4111959 2015-10-01T12:03:34.5041206 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Sathiskumar Jothi 0000-0001-7328-1112 1 Nick Croft 0000-0002-1521-5261 2 L. Wright 3 A. Turnbull 4 Steve Brown 5 23524__1797__141f4f02a75c44bb8e1bf31adf5eff4a.pdf S_Jothi_MultiPhase_modelling_Cronfa.pdf 2015-10-02T07:16:51.8830000 Output 1831489 application/pdf Accepted Manuscript true 2015-10-02T00:00:00.0000000 false
title Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
spellingShingle Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
Sathiskumar Jothi
Nick Croft
Steve Brown
title_short Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
title_full Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
title_fullStr Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
title_full_unstemmed Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
title_sort Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement
author_id_str_mv 6cd28300413d3e63178f0bf7e2130569
8f82cd0b51f4b95b0dd6fa89427d9fc7
07a865adc76376646bc6c03a69ce35a9
author_id_fullname_str_mv 6cd28300413d3e63178f0bf7e2130569_***_Sathiskumar Jothi
8f82cd0b51f4b95b0dd6fa89427d9fc7_***_Nick Croft
07a865adc76376646bc6c03a69ce35a9_***_Steve Brown
author Sathiskumar Jothi
Nick Croft
Steve Brown
author2 Sathiskumar Jothi
Nick Croft
L. Wright
A. Turnbull
Steve Brown
format Journal article
container_title International Journal of Hydrogen Energy
container_volume 40
container_issue 43
container_start_page 15105
publishDate 2015
institution Swansea University
issn 0360-3199
doi_str_mv 10.1016/j.ijhydene.2015.08.093
college_str Faculty of Science and Engineering
hierarchytype
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Premature failure in polycrystalline materials due to hydrogen absorption affects a wide range of applications, including clean energy systems, hydrogen storage systems and rocket engines. A good understanding of the diffusion and trapping processes within such materials can inform material choices and component design to reduce the likelihood of such failures. Grain boundary segregation of hydrogen can often lead to intergranular hydrogen embrittlement (IHE). Hydrogen diffusion is affected by local microstructural features including intergranular second phase precipitates, grain boundary (GB) thicknesses and geometrically necessary dislocation (GND) density. A multi-scale multi-phase model is presented here that has been developed to study GBSE with respect to hydrogen diffusion and IHE. The results of various multi-scale GBSE models with and without traps (including the effects of microstructure, intergranular precipitate phases and GB thickness) are compared and discussed, and the effects of microstructural parameters such as hydrogen segregation factor and GND trapping density on hydrogen diffusion are investigated.
published_date 2015-11-16T03:27:45Z
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score 10.999207

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