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A study of low-strain and medium-strain grain boundary engineering

Valerie Randle, Mark Coleman Orcid Logo

Acta Materialia, Volume: 57, Issue: 11, Pages: 3410 - 3421

Swansea University Authors: Valerie Randle, Mark Coleman Orcid Logo

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Abstract

Grain boundary engineering (GBE) processing schedules, involving low-strain (5% deformation) iterative treatments, have been carried out on copper. Misorientation and grain boundary plane statistics have been derived, plus tensile and hardness measurements. The Σ3 length fraction and Σ9/Σ3 number ra...

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Published in: Acta Materialia
ISSN: 1359-6454
Published: 2009
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URI: https://cronfa.swan.ac.uk/Record/cronfa5523
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2016-08-17T14:01:49.3111580</datestamp><bib-version>v2</bib-version><id>5523</id><entry>2013-09-03</entry><title>A study of low-strain and medium-strain grain boundary engineering</title><swanseaauthors><author><sid>50774edc7f60dff63ee0cbd56be764b8</sid><firstname>Valerie</firstname><surname>Randle</surname><name>Valerie Randle</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>73c5735de19c8a70acb41ab788081b67</sid><ORCID>0000-0002-4628-1077</ORCID><firstname>Mark</firstname><surname>Coleman</surname><name>Mark Coleman</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2013-09-03</date><deptcode>FGSEN</deptcode><abstract>Grain boundary engineering (GBE) processing schedules, involving low-strain (5% deformation) iterative treatments, have been carried out on copper. Misorientation and grain boundary plane statistics have been derived, plus tensile and hardness measurements. The &#x3A3;3 length fraction and &#x3A3;9/&#x3A3;3 number ratio decreased during the first two processing iterations, whereas maximum GBE misorientation statistics were achieved after three processing iterations. Analysis of mechanical properties data revealed an accumulation of strain energy throughout the first three processing iterations, sufficient to provide enough driving force for extensive &#x3A3;3n interactions. The density of &#x3A3;3 boundaries had a larger effect on the rate of hardening than did the density of grain boundaries. This finding indicates the effectiveness of &#x3A3;3 interfaces as barriers to plastic flow, which plays an important role in the early stages of GBE processing. Data from samples that had undergone the low-strain iterations were also compared to medium-strain (25% deformation) processing iterations.</abstract><type>Journal Article</type><journal>Acta Materialia</journal><volume>57</volume><journalNumber>11</journalNumber><paginationStart>3410</paginationStart><paginationEnd>3421</paginationEnd><publisher/><issnPrint>1359-6454</issnPrint><keywords>&#x2022;Copper; &#x2022;Electron backscattering diffraction (EBSD); &#x2022;Grain boundary twin</keywords><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2009</publishedYear><publishedDate>2009-12-31</publishedDate><doi>10.1016/j.actamat.2009.04.002</doi><url/><notes>This work, which appeared in a 3.76 IF journal and has 10 citations so far, was funded by EPSRC grant EP/C51260X. A methodology for assessing the effectiveness of grain boundary engineering (GBE), based &#x3A3;3 length fraction and &#x3A3;9/&#x3A3;3 number ratio, was proposed and validated. The findings establish the effectiveness of &#x3A3;3 interfaces as barriers to plastic flow. This provides a convenient index for future work. The impact of this paper (and others)led to two keynote papers at international conferences, &#x2018;ITAP-3&#x2019; and &#x2018;Thermec2009&#x2019;. The work also spawned a collaboration with a group in Germany (dagmar.dietrich@mb.tu-chemnitz.de) and a subsequent publication .</notes><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2016-08-17T14:01:49.3111580</lastEdited><Created>2013-09-03T06:10:53.0000000</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>Valerie</firstname><surname>Randle</surname><order>1</order></author><author><firstname>Mark</firstname><surname>Coleman</surname><orcid>0000-0002-4628-1077</orcid><order>2</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2016-08-17T14:01:49.3111580 v2 5523 2013-09-03 A study of low-strain and medium-strain grain boundary engineering 50774edc7f60dff63ee0cbd56be764b8 Valerie Randle Valerie Randle true false 73c5735de19c8a70acb41ab788081b67 0000-0002-4628-1077 Mark Coleman Mark Coleman true false 2013-09-03 FGSEN Grain boundary engineering (GBE) processing schedules, involving low-strain (5% deformation) iterative treatments, have been carried out on copper. Misorientation and grain boundary plane statistics have been derived, plus tensile and hardness measurements. The Σ3 length fraction and Σ9/Σ3 number ratio decreased during the first two processing iterations, whereas maximum GBE misorientation statistics were achieved after three processing iterations. Analysis of mechanical properties data revealed an accumulation of strain energy throughout the first three processing iterations, sufficient to provide enough driving force for extensive Σ3n interactions. The density of Σ3 boundaries had a larger effect on the rate of hardening than did the density of grain boundaries. This finding indicates the effectiveness of Σ3 interfaces as barriers to plastic flow, which plays an important role in the early stages of GBE processing. Data from samples that had undergone the low-strain iterations were also compared to medium-strain (25% deformation) processing iterations. Journal Article Acta Materialia 57 11 3410 3421 1359-6454 •Copper; •Electron backscattering diffraction (EBSD); •Grain boundary twin 31 12 2009 2009-12-31 10.1016/j.actamat.2009.04.002 This work, which appeared in a 3.76 IF journal and has 10 citations so far, was funded by EPSRC grant EP/C51260X. A methodology for assessing the effectiveness of grain boundary engineering (GBE), based Σ3 length fraction and Σ9/Σ3 number ratio, was proposed and validated. The findings establish the effectiveness of Σ3 interfaces as barriers to plastic flow. This provides a convenient index for future work. The impact of this paper (and others)led to two keynote papers at international conferences, ‘ITAP-3’ and ‘Thermec2009’. The work also spawned a collaboration with a group in Germany (dagmar.dietrich@mb.tu-chemnitz.de) and a subsequent publication . COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2016-08-17T14:01:49.3111580 2013-09-03T06:10:53.0000000 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Valerie Randle 1 Mark Coleman 0000-0002-4628-1077 2
title A study of low-strain and medium-strain grain boundary engineering
spellingShingle A study of low-strain and medium-strain grain boundary engineering
Valerie Randle
Mark Coleman
title_short A study of low-strain and medium-strain grain boundary engineering
title_full A study of low-strain and medium-strain grain boundary engineering
title_fullStr A study of low-strain and medium-strain grain boundary engineering
title_full_unstemmed A study of low-strain and medium-strain grain boundary engineering
title_sort A study of low-strain and medium-strain grain boundary engineering
author_id_str_mv 50774edc7f60dff63ee0cbd56be764b8
73c5735de19c8a70acb41ab788081b67
author_id_fullname_str_mv 50774edc7f60dff63ee0cbd56be764b8_***_Valerie Randle
73c5735de19c8a70acb41ab788081b67_***_Mark Coleman
author Valerie Randle
Mark Coleman
author2 Valerie Randle
Mark Coleman
format Journal article
container_title Acta Materialia
container_volume 57
container_issue 11
container_start_page 3410
publishDate 2009
institution Swansea University
issn 1359-6454
doi_str_mv 10.1016/j.actamat.2009.04.002
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 Grain boundary engineering (GBE) processing schedules, involving low-strain (5% deformation) iterative treatments, have been carried out on copper. Misorientation and grain boundary plane statistics have been derived, plus tensile and hardness measurements. The Σ3 length fraction and Σ9/Σ3 number ratio decreased during the first two processing iterations, whereas maximum GBE misorientation statistics were achieved after three processing iterations. Analysis of mechanical properties data revealed an accumulation of strain energy throughout the first three processing iterations, sufficient to provide enough driving force for extensive Σ3n interactions. The density of Σ3 boundaries had a larger effect on the rate of hardening than did the density of grain boundaries. This finding indicates the effectiveness of Σ3 interfaces as barriers to plastic flow, which plays an important role in the early stages of GBE processing. Data from samples that had undergone the low-strain iterations were also compared to medium-strain (25% deformation) processing iterations.
published_date 2009-12-31T03:09:20Z
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