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On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy

S. Pedrazzini, D. J. Child, T. Aarholt, Chris Ball, Mike Dowd, A. Girling, Hollie Cockings Orcid Logo, Karen Perkins Orcid Logo, M. C. Hardy, H. J. Stone, P. A. J. Bagot

Metallurgical and Materials Transactions A, Volume: 49, Issue: 9, Pages: 3908 - 3922

Swansea University Authors: Chris Ball, Mike Dowd, Hollie Cockings Orcid Logo, Karen Perkins Orcid Logo

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DOI (Published version): 10.1007/s11661-018-4752-7

Abstract

The influence of sulfur contamination on the corrosion-fatigue behavior of a polycrystalline superalloy used in aero-engines is considered. Samples tested under a variety of environmental conditions (including exposures to air, SOx gas, and salt) are characterized through a suite of high-resolution...

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Published in: Metallurgical and Materials Transactions A
ISSN: 1073-5623 1543-1940
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa41059
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spelling 2021-01-14T13:10:55.2123965 v2 41059 2018-07-18 On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy 3592ed97338725843efc6da22f3aba5c Chris Ball Chris Ball true false 5ed34863b06d600da4be113c1c83a35c Mike Dowd Mike Dowd true false c951e311ac85396c2bb8ed4153b19fde 0000-0002-9745-4521 Hollie Cockings Hollie Cockings true false f866eaa2d8f163d2b4e99259966427c8 0000-0001-5826-9705 Karen Perkins Karen Perkins true false 2018-07-18 FGSEN The influence of sulfur contamination on the corrosion-fatigue behavior of a polycrystalline superalloy used in aero-engines is considered. Samples tested under a variety of environmental conditions (including exposures to air, SOx gas, and salt) are characterized through a suite of high-resolution characterization methods, including transmission electron microscopy (TEM), secondary ion mass spectroscopy (nanoSIMS), and atom probe tomography (APT). The primary effect of sulfur contamination is to accelerate the crack growth rate by altering the failure mechanism. The SIMS and TEM analyses indicate Cr-Ti sulfide particle formation at grain boundaries ahead of and around oxidized cracks. The APT analysis suggests that these particles then oxidize as the crack propagates and are enveloped in chromia. The chromia is surrounded by a continuous layer of alumina within the cracks. All of the sulfur detected was confined within the particles, with no elemental segregation found at grain boundaries. Journal Article Metallurgical and Materials Transactions A 49 9 3908 3922 1073-5623 1543-1940 1 9 2018 2018-09-01 10.1007/s11661-018-4752-7 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2021-01-14T13:10:55.2123965 2018-07-18T16:32:17.4091349 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised S. Pedrazzini 1 D. J. Child 2 T. Aarholt 3 Chris Ball 4 Mike Dowd 5 A. Girling 6 Hollie Cockings 0000-0002-9745-4521 7 Karen Perkins 0000-0001-5826-9705 8 M. C. Hardy 9 H. J. Stone 10 P. A. J. Bagot 11 0041059-18072018163451.pdf pedrazzini2018.pdf 2018-07-18T16:34:51.1030000 Output 9896251 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/
title On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
spellingShingle On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
Chris Ball
Mike Dowd
Hollie Cockings
Karen Perkins
title_short On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
title_full On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
title_fullStr On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
title_full_unstemmed On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
title_sort On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy
author_id_str_mv 3592ed97338725843efc6da22f3aba5c
5ed34863b06d600da4be113c1c83a35c
c951e311ac85396c2bb8ed4153b19fde
f866eaa2d8f163d2b4e99259966427c8
author_id_fullname_str_mv 3592ed97338725843efc6da22f3aba5c_***_Chris Ball
5ed34863b06d600da4be113c1c83a35c_***_Mike Dowd
c951e311ac85396c2bb8ed4153b19fde_***_Hollie Cockings
f866eaa2d8f163d2b4e99259966427c8_***_Karen Perkins
author Chris Ball
Mike Dowd
Hollie Cockings
Karen Perkins
author2 S. Pedrazzini
D. J. Child
T. Aarholt
Chris Ball
Mike Dowd
A. Girling
Hollie Cockings
Karen Perkins
M. C. Hardy
H. J. Stone
P. A. J. Bagot
format Journal article
container_title Metallurgical and Materials Transactions A
container_volume 49
container_issue 9
container_start_page 3908
publishDate 2018
institution Swansea University
issn 1073-5623
1543-1940
doi_str_mv 10.1007/s11661-018-4752-7
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
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description The influence of sulfur contamination on the corrosion-fatigue behavior of a polycrystalline superalloy used in aero-engines is considered. Samples tested under a variety of environmental conditions (including exposures to air, SOx gas, and salt) are characterized through a suite of high-resolution characterization methods, including transmission electron microscopy (TEM), secondary ion mass spectroscopy (nanoSIMS), and atom probe tomography (APT). The primary effect of sulfur contamination is to accelerate the crack growth rate by altering the failure mechanism. The SIMS and TEM analyses indicate Cr-Ti sulfide particle formation at grain boundaries ahead of and around oxidized cracks. The APT analysis suggests that these particles then oxidize as the crack propagates and are enveloped in chromia. The chromia is surrounded by a continuous layer of alumina within the cracks. All of the sulfur detected was confined within the particles, with no elemental segregation found at grain boundaries.
published_date 2018-09-01T03:52:19Z
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score 11.035765

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