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On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels

Hollie Cockings Orcid Logo, Ben Cockings, Karen Perkins Orcid Logo

Heliyon, Volume: 6, Issue: 7, Start page: e04440

Swansea University Authors: Hollie Cockings Orcid Logo, Ben Cockings, Karen Perkins Orcid Logo

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DOI (Published version): 10.1016/j.heliyon.2020.e04440

Abstract

The mechanical behaviour of three ultra-high strength steels has been assessed; AerMet100, 300M and the recently developed corrosion resistant high strength steel, MLX-17. Material heat treatment profiles have been utilised to provide performance optimised for the aerospace industry and specimens ha...

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Published in: Heliyon
ISSN: 2405-8440
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54700
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spelling 2020-08-21T18:27:33.1960548 v2 54700 2020-07-14 On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels c951e311ac85396c2bb8ed4153b19fde 0000-0002-9745-4521 Hollie Cockings Hollie Cockings true false 998ffd9fa65fa0c2ffc718a5bff10cdd Ben Cockings Ben Cockings true false f866eaa2d8f163d2b4e99259966427c8 0000-0001-5826-9705 Karen Perkins Karen Perkins true false 2020-07-14 MTLS The mechanical behaviour of three ultra-high strength steels has been assessed; AerMet100, 300M and the recently developed corrosion resistant high strength steel, MLX-17. Material heat treatment profiles have been utilised to provide performance optimised for the aerospace industry and specimens have been tested to explore tensile and fatigue properties, in particular when combined with pre-strain to simulate the effects of overload. Testing of this kind has not been reported within the literature, particularly amongst ultra-high strength and corrosion-resistant steels. Baseline mechanical performance for all three materials in their heat-treated conditions has been established and properties such as yield strength and ultimate tensile strength have been assessed following a 75% and 95% pre-strain as well as fatigue in combination with a 75% and 95% pre-strain. Under all loading conditions, resultant tensile mechanical properties are not seen to witness a substantial degradation in performance, but an improvement in terms of yield strength and UTS, due to the role of work hardening. An alloy comparison has been carried out and responses are seen to vary slightly as a result of material microstructure. Correlation of pre-strain and pre-fatigue results with respect to baseline properties and microstructure has contributed to advancing the understanding of the mechanical behaviour of the aforementioned ultra-high strength steels. Journal Article Heliyon 6 7 e04440 Elsevier BV 2405-8440 Materials science; Ultra high strength steel; Stainless steel; Tensile; Pre-strain; Pre-fatigue; Stress strain 1 7 2020 2020-07-01 10.1016/j.heliyon.2020.e04440 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University Open Access Gold APC required - funding on hold. 2020-08-21T18:27:33.1960548 2020-07-14T09:11:52.0139591 Hollie Cockings 0000-0002-9745-4521 1 Ben Cockings 2 Karen Perkins 0000-0001-5826-9705 3 54700__17702__839d6b265a19436aa2ae03a288846074.pdf Heliyon paper HC.pdf 2020-07-14T09:17:03.5710374 Output 1889608 application/pdf Version of Record true © 2020 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). true English
title On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
spellingShingle On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
Hollie Cockings
Ben Cockings
Karen Perkins
title_short On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
title_full On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
title_fullStr On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
title_full_unstemmed On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
title_sort On the effect of pre-strain and pre-fatigue on the monotonic behaviour of ultra-high strength steels
author_id_str_mv c951e311ac85396c2bb8ed4153b19fde
998ffd9fa65fa0c2ffc718a5bff10cdd
f866eaa2d8f163d2b4e99259966427c8
author_id_fullname_str_mv c951e311ac85396c2bb8ed4153b19fde_***_Hollie Cockings
998ffd9fa65fa0c2ffc718a5bff10cdd_***_Ben Cockings
f866eaa2d8f163d2b4e99259966427c8_***_Karen Perkins
author Hollie Cockings
Ben Cockings
Karen Perkins
author2 Hollie Cockings
Ben Cockings
Karen Perkins
format Journal article
container_title Heliyon
container_volume 6
container_issue 7
container_start_page e04440
publishDate 2020
institution Swansea University
issn 2405-8440
doi_str_mv 10.1016/j.heliyon.2020.e04440
publisher Elsevier BV
document_store_str 1
active_str 0
description The mechanical behaviour of three ultra-high strength steels has been assessed; AerMet100, 300M and the recently developed corrosion resistant high strength steel, MLX-17. Material heat treatment profiles have been utilised to provide performance optimised for the aerospace industry and specimens have been tested to explore tensile and fatigue properties, in particular when combined with pre-strain to simulate the effects of overload. Testing of this kind has not been reported within the literature, particularly amongst ultra-high strength and corrosion-resistant steels. Baseline mechanical performance for all three materials in their heat-treated conditions has been established and properties such as yield strength and ultimate tensile strength have been assessed following a 75% and 95% pre-strain as well as fatigue in combination with a 75% and 95% pre-strain. Under all loading conditions, resultant tensile mechanical properties are not seen to witness a substantial degradation in performance, but an improvement in terms of yield strength and UTS, due to the role of work hardening. An alloy comparison has been carried out and responses are seen to vary slightly as a result of material microstructure. Correlation of pre-strain and pre-fatigue results with respect to baseline properties and microstructure has contributed to advancing the understanding of the mechanical behaviour of the aforementioned ultra-high strength steels.
published_date 2020-07-01T04:08:24Z
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score 11.012678

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