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Surface topography and the impact on fatigue performance

D Ardi, Y.G. Li, K.H.K. Chan, L. Blunt, Martin Bache

Surface Topography: Metrology and Properties, Volume: 3, Issue: 1, Start page: 015007

Swansea University Author: Martin Bache

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DOI (Published version): 10.1088/2051-672X/3/1/015007

Abstract

Areal characterization was applied to plain fatigue specimens manufactured from a nickel-based superalloy, Alloy 720Li, to determine the impact of machined/finished surface topography on fatigue performance of this material. Samples were subjected to fatigue testing in the as-turned and shot peened...

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Published in: Surface Topography: Metrology and Properties
ISSN: 2051-672X
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21055
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first_indexed 2015-05-06T02:09:41Z
last_indexed 2018-02-09T04:58:12Z
id cronfa21055
recordtype SURis
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spelling 2017-06-30T09:51:34.7877882 v2 21055 2015-05-05 Surface topography and the impact on fatigue performance 3453423659f6bcfddcd0a716c6b0e36a Martin Bache Martin Bache true false 2015-05-05 FGSEN Areal characterization was applied to plain fatigue specimens manufactured from a nickel-based superalloy, Alloy 720Li, to determine the impact of machined/finished surface topography on fatigue performance of this material. Samples were subjected to fatigue testing in the as-turned and shot peened conditions to study the interaction between residual stresses and topography in influencing the fatigue performance. The turning process was deliberately manipulated to produce three distinct finishes which were subsequently given an identical shot peening, resulting in six grades of surface topography. Surface topography was found to influence fatigue even in the presence of peened compressive residual stresses by promoting crack initiation at valley sites. Both the roughness amplitude and spatial characteristics of the surface were found to be important when correlating to fatigue performance. Journal Article Surface Topography: Metrology and Properties 3 1 015007 2051-672X topography; fatigue, nickel 2 3 2015 2015-03-02 10.1088/2051-672X/3/1/015007 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2017-06-30T09:51:34.7877882 2015-05-05T21:26:37.6931164 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised D Ardi 1 Y.G. Li 2 K.H.K. Chan 3 L. Blunt 4 Martin Bache 5
title Surface topography and the impact on fatigue performance
spellingShingle Surface topography and the impact on fatigue performance
Martin Bache
title_short Surface topography and the impact on fatigue performance
title_full Surface topography and the impact on fatigue performance
title_fullStr Surface topography and the impact on fatigue performance
title_full_unstemmed Surface topography and the impact on fatigue performance
title_sort Surface topography and the impact on fatigue performance
author_id_str_mv 3453423659f6bcfddcd0a716c6b0e36a
author_id_fullname_str_mv 3453423659f6bcfddcd0a716c6b0e36a_***_Martin Bache
author Martin Bache
author2 D Ardi
Y.G. Li
K.H.K. Chan
L. Blunt
Martin Bache
format Journal article
container_title Surface Topography: Metrology and Properties
container_volume 3
container_issue 1
container_start_page 015007
publishDate 2015
institution Swansea University
issn 2051-672X
doi_str_mv 10.1088/2051-672X/3/1/015007
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 0
active_str 0
description Areal characterization was applied to plain fatigue specimens manufactured from a nickel-based superalloy, Alloy 720Li, to determine the impact of machined/finished surface topography on fatigue performance of this material. Samples were subjected to fatigue testing in the as-turned and shot peened conditions to study the interaction between residual stresses and topography in influencing the fatigue performance. The turning process was deliberately manipulated to produce three distinct finishes which were subsequently given an identical shot peening, resulting in six grades of surface topography. Surface topography was found to influence fatigue even in the presence of peened compressive residual stresses by promoting crack initiation at valley sites. Both the roughness amplitude and spatial characteristics of the surface were found to be important when correlating to fatigue performance.
published_date 2015-03-02T03:24:57Z
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score 11.013686

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