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Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment

Lintao Zhang, Will Harrison Orcid Logo, Shahin Mehraban, Steve Brown, Nicholas Lavery Orcid Logo

Materials, Volume: 16, Issue: 4, Start page: 1458

Swansea University Authors: Will Harrison Orcid Logo, Shahin Mehraban, Steve Brown, Nicholas Lavery Orcid Logo

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DOI (Published version): 10.3390/ma16041458

Abstract

This work investigated the feasibility of using a miniaturised non-standard tensile specimen to predict the post-necking behaviour of the materials manufactured via a rapid alloy prototyping (RAP) approach. The experimental work focused on the determination of the Lankford coefficients (r-value) of...

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Published in: Materials
ISSN: 1996-1944
Published: MDPI AG 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa66155
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The experimental work focused on the determination of the Lankford coefficients (r-value) of dual-phase 800 (DP800) steel and the digital image correlation (DIC) for some cases, which were used to help calibrate the damage model parameters of DP800 steel. The three-dimensional numerical simulations focused on the influence of the size effect (aspect ratio, AR) on the post-necking behaviour, such as the strain/stress/triaxiality evolutions, fracture angles, and necking mode transitions. The modelling showed that although a good correlation can be found between the predicted and experimentally observed ultimate tensile strength (UTS) and total elongation. The standard tensile specimen with a gauge length of 80 mm exhibited a fracture angle of &#x223C;55&#xB0;, whereas the smaller miniaturised non-standard specimens with low ARs exhibited fractures perpendicular to the loading direction. This shows that care must be taken when comparing the post-necking behaviour of small-scale tensile tests, such as those completed as a part of a RAP approach, to the post-necking behaviours of standard full-size test specimens. However, the modelling work showed that this behaviour is well represented, demonstrating a transition between the fracture angles of the samples between 2.5 and 5. 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spelling 2024-05-20T13:03:41.0867665 v2 66155 2024-04-25 Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment dae59f76fa4f63123aa028abfcd2b07a 0000-0002-0380-7075 Will Harrison Will Harrison true false c7e4a4152b2cf403da129be7d1c2904d Shahin Mehraban Shahin Mehraban true false 07a865adc76376646bc6c03a69ce35a9 Steve Brown Steve Brown true false 9f102ff59824fd4f7ce3d40144304395 0000-0003-0953-5936 Nicholas Lavery Nicholas Lavery true false 2024-04-25 ACEM This work investigated the feasibility of using a miniaturised non-standard tensile specimen to predict the post-necking behaviour of the materials manufactured via a rapid alloy prototyping (RAP) approach. The experimental work focused on the determination of the Lankford coefficients (r-value) of dual-phase 800 (DP800) steel and the digital image correlation (DIC) for some cases, which were used to help calibrate the damage model parameters of DP800 steel. The three-dimensional numerical simulations focused on the influence of the size effect (aspect ratio, AR) on the post-necking behaviour, such as the strain/stress/triaxiality evolutions, fracture angles, and necking mode transitions. The modelling showed that although a good correlation can be found between the predicted and experimentally observed ultimate tensile strength (UTS) and total elongation. The standard tensile specimen with a gauge length of 80 mm exhibited a fracture angle of ∼55°, whereas the smaller miniaturised non-standard specimens with low ARs exhibited fractures perpendicular to the loading direction. This shows that care must be taken when comparing the post-necking behaviour of small-scale tensile tests, such as those completed as a part of a RAP approach, to the post-necking behaviours of standard full-size test specimens. However, the modelling work showed that this behaviour is well represented, demonstrating a transition between the fracture angles of the samples between 2.5 and 5. This provides more confidence in understanding the post-necking behaviour of small-scale tensile tests. Journal Article Materials 16 4 1458 MDPI AG 1996-1944 dual-phase steel; aspect ratio; necking modes; fracture angle; rapid alloy prototyping 9 2 2023 2023-02-09 10.3390/ma16041458 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University Another institution paid the OA fee Rapid Alloy Prototyping Prosperity Partnership project (EP/S005218/1—ACCELERATING ALLOY DEVELOPMENT THROUGH DELIVERING NOVEL PROTOTYPING SOLUTIONS). 2024-05-20T13:03:41.0867665 2024-04-25T11:18:15.4207193 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Lintao Zhang 1 Will Harrison 0000-0002-0380-7075 2 Shahin Mehraban 3 Steve Brown 4 Nicholas Lavery 0000-0003-0953-5936 5 66155__30400__d25231b4812a4ad79d290be97bbdd3c3.pdf 66155.VoR.pdf 2024-05-20T13:00:25.0734928 Output 24523264 application/pdf Version of Record true © 2023 by the authors. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) license. true eng https://creativecommons.org/licenses/by/4.0/
title Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
spellingShingle Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
Will Harrison
Shahin Mehraban
Steve Brown
Nicholas Lavery
title_short Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
title_full Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
title_fullStr Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
title_full_unstemmed Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
title_sort Size Effect on the Post-Necking Behaviour of Dual-Phase 800 Steel: Modelling and Experiment
author_id_str_mv dae59f76fa4f63123aa028abfcd2b07a
c7e4a4152b2cf403da129be7d1c2904d
07a865adc76376646bc6c03a69ce35a9
9f102ff59824fd4f7ce3d40144304395
author_id_fullname_str_mv dae59f76fa4f63123aa028abfcd2b07a_***_Will Harrison
c7e4a4152b2cf403da129be7d1c2904d_***_Shahin Mehraban
07a865adc76376646bc6c03a69ce35a9_***_Steve Brown
9f102ff59824fd4f7ce3d40144304395_***_Nicholas Lavery
author Will Harrison
Shahin Mehraban
Steve Brown
Nicholas Lavery
author2 Lintao Zhang
Will Harrison
Shahin Mehraban
Steve Brown
Nicholas Lavery
format Journal article
container_title Materials
container_volume 16
container_issue 4
container_start_page 1458
publishDate 2023
institution Swansea University
issn 1996-1944
doi_str_mv 10.3390/ma16041458
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description This work investigated the feasibility of using a miniaturised non-standard tensile specimen to predict the post-necking behaviour of the materials manufactured via a rapid alloy prototyping (RAP) approach. The experimental work focused on the determination of the Lankford coefficients (r-value) of dual-phase 800 (DP800) steel and the digital image correlation (DIC) for some cases, which were used to help calibrate the damage model parameters of DP800 steel. The three-dimensional numerical simulations focused on the influence of the size effect (aspect ratio, AR) on the post-necking behaviour, such as the strain/stress/triaxiality evolutions, fracture angles, and necking mode transitions. The modelling showed that although a good correlation can be found between the predicted and experimentally observed ultimate tensile strength (UTS) and total elongation. The standard tensile specimen with a gauge length of 80 mm exhibited a fracture angle of ∼55°, whereas the smaller miniaturised non-standard specimens with low ARs exhibited fractures perpendicular to the loading direction. This shows that care must be taken when comparing the post-necking behaviour of small-scale tensile tests, such as those completed as a part of a RAP approach, to the post-necking behaviours of standard full-size test specimens. However, the modelling work showed that this behaviour is well represented, demonstrating a transition between the fracture angles of the samples between 2.5 and 5. This provides more confidence in understanding the post-necking behaviour of small-scale tensile tests.
published_date 2023-02-09T05:42:29Z
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score 11.048302

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