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Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping

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

Materials Science and Engineering: A, Volume: 875, Start page: 145075

Swansea University Authors: Lintao Zhang, Will Harrison Orcid Logo, Mazher Yar, Shahin Mehraban, Steve Brown, Nicholas Lavery Orcid Logo

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DOI (Published version): 10.1016/j.msea.2023.145075

Abstract

This work aims to investigate feasibility of using non-standard miniaturized tensile specimens (MTS) to characterise total elongation and formability behaviour of dual phase steels: to establish the scaling rules for MTS to predict a range of mechanical properties of steels obtained through rapid al...

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Published in: Materials Science and Engineering: A
ISSN: 0921-5093
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa63239
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Accurate measurement of these properties using miniature specimens allows the formability behaviour of materials produced using RAP, a process which can produce lab scale samples of 100 grams. This allows the effects of multiple compositions and thermomechanical processing parameters on formability to be evaluated. For this study, the ability of miniature tensile specimens to characterise ductility, forming limits and r-values has been compared to properties measured using standard sized tensile specimens for the dual phase steels, DP600 and DP800. 5 different tensile specimens were investigated, with gauge lengths varying from 80 mm to 5 mm and samples were taken at different orientations to the rolling direction. Total elongation was evaluated against slimness ratio for each tensile sample using the Bertelle-Oliver method and good correlations were obtained, despite specimen thicknesses being below the critical value, and the tensile strength of DP800 exceeding the limit stated for the method. Forming limit curves (FLC) were predicted using the Keeler-Brazier method, based on tensile data obtained using the standard and non-standard tensile specimens These curves compared favourably to experimentally obtained FLCs, however the curve predicted using the miniaturised tensile specimen over-predicted the major strain. The anisotropy of the rolled sheet steels was characterised from r-values obtained from tensile tests performed at different orientations to the rolling direction. Values obtained from the miniature tensile test were comparable to those obtained from standard tests within the range of scatter. The results obtained through this study provide confidence in using the miniature tensile specimens to predict the formability of heterogeneous alloys such as DP steels, manufactured using the RAP process.</abstract><type>Journal Article</type><journal>Materials Science and Engineering: A</journal><volume>875</volume><journalNumber/><paginationStart>145075</paginationStart><paginationEnd/><publisher>Elsevier BV</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0921-5093</issnPrint><issnElectronic/><keywords>Dual-phase steel, Size effect, Total elongation, Materials constant, Rapid alloy prototyping (RAP)</keywords><publishedDay>1</publishedDay><publishedMonth>6</publishedMonth><publishedYear>2023</publishedYear><publishedDate>2023-06-01</publishedDate><doi>10.1016/j.msea.2023.145075</doi><url>http://dx.doi.org/10.1016/j.msea.2023.145075</url><notes/><college>COLLEGE NANME</college><department>General Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>GENG</DepartmentCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders>EPSRC (EP/S005218/1)</funders><projectreference/><lastEdited>2023-05-24T14:45:48.1578818</lastEdited><Created>2023-04-25T10:25:35.8810905</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Materials Science and Engineering</level></path><authors><author><firstname>Lintao</firstname><surname>Zhang</surname><orcid/><order>1</order></author><author><firstname>Will</firstname><surname>Harrison</surname><orcid>0000-0002-0380-7075</orcid><order>2</order></author><author><firstname>Mazher</firstname><surname>Yar</surname><order>3</order></author><author><firstname>Shahin</firstname><surname>Mehraban</surname><orcid/><order>4</order></author><author><firstname>Steve</firstname><surname>Brown</surname><order>5</order></author><author><firstname>Nicholas</firstname><surname>Lavery</surname><orcid>0000-0003-0953-5936</orcid><order>6</order></author></authors><documents><document><filename>63239__27460__5733c8a482ed43d2a6b9b438488b4a24.pdf</filename><originalFilename>63239.VOR.pdf</originalFilename><uploaded>2023-05-12T14:58:55.6298874</uploaded><type>Output</type><contentLength>3330377</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0).</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>https://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling v2 63239 2023-04-25 Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping 2e060f2328383b15f607194b4dc0abef Lintao Zhang Lintao Zhang true false dae59f76fa4f63123aa028abfcd2b07a 0000-0002-0380-7075 Will Harrison Will Harrison true false 275ba20bb50f9c26e0d0f0aa69d0c7e4 Mazher Yar Mazher Yar 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 2023-04-25 GENG This work aims to investigate feasibility of using non-standard miniaturized tensile specimens (MTS) to characterise total elongation and formability behaviour of dual phase steels: to establish the scaling rules for MTS to predict a range of mechanical properties of steels obtained through rapid alloy prototyping (RAP) in the laboratory. Accurate measurement of these properties using miniature specimens allows the formability behaviour of materials produced using RAP, a process which can produce lab scale samples of 100 grams. This allows the effects of multiple compositions and thermomechanical processing parameters on formability to be evaluated. For this study, the ability of miniature tensile specimens to characterise ductility, forming limits and r-values has been compared to properties measured using standard sized tensile specimens for the dual phase steels, DP600 and DP800. 5 different tensile specimens were investigated, with gauge lengths varying from 80 mm to 5 mm and samples were taken at different orientations to the rolling direction. Total elongation was evaluated against slimness ratio for each tensile sample using the Bertelle-Oliver method and good correlations were obtained, despite specimen thicknesses being below the critical value, and the tensile strength of DP800 exceeding the limit stated for the method. Forming limit curves (FLC) were predicted using the Keeler-Brazier method, based on tensile data obtained using the standard and non-standard tensile specimens These curves compared favourably to experimentally obtained FLCs, however the curve predicted using the miniaturised tensile specimen over-predicted the major strain. The anisotropy of the rolled sheet steels was characterised from r-values obtained from tensile tests performed at different orientations to the rolling direction. Values obtained from the miniature tensile test were comparable to those obtained from standard tests within the range of scatter. The results obtained through this study provide confidence in using the miniature tensile specimens to predict the formability of heterogeneous alloys such as DP steels, manufactured using the RAP process. Journal Article Materials Science and Engineering: A 875 145075 Elsevier BV 0921-5093 Dual-phase steel, Size effect, Total elongation, Materials constant, Rapid alloy prototyping (RAP) 1 6 2023 2023-06-01 10.1016/j.msea.2023.145075 http://dx.doi.org/10.1016/j.msea.2023.145075 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University SU Library paid the OA fee (TA Institutional Deal) EPSRC (EP/S005218/1) 2023-05-24T14:45:48.1578818 2023-04-25T10:25:35.8810905 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Lintao Zhang 1 Will Harrison 0000-0002-0380-7075 2 Mazher Yar 3 Shahin Mehraban 4 Steve Brown 5 Nicholas Lavery 0000-0003-0953-5936 6 63239__27460__5733c8a482ed43d2a6b9b438488b4a24.pdf 63239.VOR.pdf 2023-05-12T14:58:55.6298874 Output 3330377 application/pdf Version of Record true Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0). true eng https://creativecommons.org/licenses/by/4.0/
title Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
spellingShingle Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
Lintao Zhang
Will Harrison
Mazher Yar
Shahin Mehraban
Steve Brown
Nicholas Lavery
title_short Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
title_full Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
title_fullStr Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
title_full_unstemmed Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
title_sort Use of miniaturized tensile specimens to evaluate the ductility and formability of dual phased steels for Rapid Alloy Prototyping
author_id_str_mv 2e060f2328383b15f607194b4dc0abef
dae59f76fa4f63123aa028abfcd2b07a
275ba20bb50f9c26e0d0f0aa69d0c7e4
c7e4a4152b2cf403da129be7d1c2904d
07a865adc76376646bc6c03a69ce35a9
9f102ff59824fd4f7ce3d40144304395
author_id_fullname_str_mv 2e060f2328383b15f607194b4dc0abef_***_Lintao Zhang
dae59f76fa4f63123aa028abfcd2b07a_***_Will Harrison
275ba20bb50f9c26e0d0f0aa69d0c7e4_***_Mazher Yar
c7e4a4152b2cf403da129be7d1c2904d_***_Shahin Mehraban
07a865adc76376646bc6c03a69ce35a9_***_Steve Brown
9f102ff59824fd4f7ce3d40144304395_***_Nicholas Lavery
author Lintao Zhang
Will Harrison
Mazher Yar
Shahin Mehraban
Steve Brown
Nicholas Lavery
author2 Lintao Zhang
Will Harrison
Mazher Yar
Shahin Mehraban
Steve Brown
Nicholas Lavery
format Journal article
container_title Materials Science and Engineering: A
container_volume 875
container_start_page 145075
publishDate 2023
institution Swansea University
issn 0921-5093
doi_str_mv 10.1016/j.msea.2023.145075
publisher Elsevier BV
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 - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url http://dx.doi.org/10.1016/j.msea.2023.145075
document_store_str 1
active_str 0
description This work aims to investigate feasibility of using non-standard miniaturized tensile specimens (MTS) to characterise total elongation and formability behaviour of dual phase steels: to establish the scaling rules for MTS to predict a range of mechanical properties of steels obtained through rapid alloy prototyping (RAP) in the laboratory. Accurate measurement of these properties using miniature specimens allows the formability behaviour of materials produced using RAP, a process which can produce lab scale samples of 100 grams. This allows the effects of multiple compositions and thermomechanical processing parameters on formability to be evaluated. For this study, the ability of miniature tensile specimens to characterise ductility, forming limits and r-values has been compared to properties measured using standard sized tensile specimens for the dual phase steels, DP600 and DP800. 5 different tensile specimens were investigated, with gauge lengths varying from 80 mm to 5 mm and samples were taken at different orientations to the rolling direction. Total elongation was evaluated against slimness ratio for each tensile sample using the Bertelle-Oliver method and good correlations were obtained, despite specimen thicknesses being below the critical value, and the tensile strength of DP800 exceeding the limit stated for the method. Forming limit curves (FLC) were predicted using the Keeler-Brazier method, based on tensile data obtained using the standard and non-standard tensile specimens These curves compared favourably to experimentally obtained FLCs, however the curve predicted using the miniaturised tensile specimen over-predicted the major strain. The anisotropy of the rolled sheet steels was characterised from r-values obtained from tensile tests performed at different orientations to the rolling direction. Values obtained from the miniature tensile test were comparable to those obtained from standard tests within the range of scatter. The results obtained through this study provide confidence in using the miniature tensile specimens to predict the formability of heterogeneous alloys such as DP steels, manufactured using the RAP process.
published_date 2023-06-01T14:45:46Z
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