Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature
The microstructural evolution of an AZ31 rolled sheet during dynamic deformation at strain rates of ∼10 3 s −1 has been investigated by electron backscatter diffraction, X-ray and neutron diffraction. The influence of orientation on the predominant deformation mechanisms and on the recovery processe...
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| Veröffentlicht in: | Acta materialia 2011-10, Vol.59 (18), p.6949-6962 |
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| creator | Dudamell, N.V. Ulacia, I. Gálvez, F. Yi, S. Bohlen, J. Letzig, D. Hurtado, I. Pérez-Prado, M.T. |
| description | The microstructural evolution of an AZ31 rolled sheet during dynamic deformation at strain rates of ∼10
3
s
−1 has been investigated by electron backscatter diffraction, X-ray and neutron diffraction. The influence of orientation on the predominant deformation mechanisms and on the recovery processes taking place during deformation has been systematically examined. The results have been compared with those corresponding to the same alloy tested quasi-statically under equivalent conditions. It has been found that strain rate enhances the activation of
{
1
0
1
¯
2
}
extension twinning dramatically, while contraction and secondary twinning are not significantly influenced. The polarity of
{
1
0
1
¯
2
}
extension twinning is even reversed in some grains under selected testing conditions. Significant grain subdivision by the formation of geometrically necessary boundaries (GNBs) takes place during both quasi-static and dynamic deformation of this AZ31 alloy. It is remarkable that GNBs of high misorientations form even at the highest strain rates. The phenomenon of recovery has been found to be orientation dependent. |
| doi_str_mv | 10.1016/j.actamat.2011.07.047 |
| format | Article |
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3
s
−1 has been investigated by electron backscatter diffraction, X-ray and neutron diffraction. The influence of orientation on the predominant deformation mechanisms and on the recovery processes taking place during deformation has been systematically examined. The results have been compared with those corresponding to the same alloy tested quasi-statically under equivalent conditions. It has been found that strain rate enhances the activation of
{
1
0
1
¯
2
}
extension twinning dramatically, while contraction and secondary twinning are not significantly influenced. The polarity of
{
1
0
1
¯
2
}
extension twinning is even reversed in some grains under selected testing conditions. Significant grain subdivision by the formation of geometrically necessary boundaries (GNBs) takes place during both quasi-static and dynamic deformation of this AZ31 alloy. It is remarkable that GNBs of high misorientations form even at the highest strain rates. The phenomenon of recovery has been found to be orientation dependent.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2011.07.047</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; AZ31 ; Deformation ; Dynamics ; Exact sciences and technology ; Grains ; High strain rate ; Magnesium ; Magnesium base alloys ; Metals. Metallurgy ; Orientation ; Recovery ; Slip ; Strain rate ; Subdivisions ; Twinning</subject><ispartof>Acta materialia, 2011-10, Vol.59 (18), p.6949-6962</ispartof><rights>2011 Acta Materialia Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-2a102885aaa2a93c80fcee49f61ab9091ea7554480b3cccb6e446f1419a4d9163</citedby><cites>FETCH-LOGICAL-c418t-2a102885aaa2a93c80fcee49f61ab9091ea7554480b3cccb6e446f1419a4d9163</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1359645411005337$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24572009$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Dudamell, N.V.</creatorcontrib><creatorcontrib>Ulacia, I.</creatorcontrib><creatorcontrib>Gálvez, F.</creatorcontrib><creatorcontrib>Yi, S.</creatorcontrib><creatorcontrib>Bohlen, J.</creatorcontrib><creatorcontrib>Letzig, D.</creatorcontrib><creatorcontrib>Hurtado, I.</creatorcontrib><creatorcontrib>Pérez-Prado, M.T.</creatorcontrib><title>Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature</title><title>Acta materialia</title><description>The microstructural evolution of an AZ31 rolled sheet during dynamic deformation at strain rates of ∼10
3
s
−1 has been investigated by electron backscatter diffraction, X-ray and neutron diffraction. The influence of orientation on the predominant deformation mechanisms and on the recovery processes taking place during deformation has been systematically examined. The results have been compared with those corresponding to the same alloy tested quasi-statically under equivalent conditions. It has been found that strain rate enhances the activation of
{
1
0
1
¯
2
}
extension twinning dramatically, while contraction and secondary twinning are not significantly influenced. The polarity of
{
1
0
1
¯
2
}
extension twinning is even reversed in some grains under selected testing conditions. Significant grain subdivision by the formation of geometrically necessary boundaries (GNBs) takes place during both quasi-static and dynamic deformation of this AZ31 alloy. It is remarkable that GNBs of high misorientations form even at the highest strain rates. The phenomenon of recovery has been found to be orientation dependent.</description><subject>Applied sciences</subject><subject>AZ31</subject><subject>Deformation</subject><subject>Dynamics</subject><subject>Exact sciences and technology</subject><subject>Grains</subject><subject>High strain rate</subject><subject>Magnesium</subject><subject>Magnesium base alloys</subject><subject>Metals. Metallurgy</subject><subject>Orientation</subject><subject>Recovery</subject><subject>Slip</subject><subject>Strain rate</subject><subject>Subdivisions</subject><subject>Twinning</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkE9r3DAQxU1poGnSj1DQpfRkZ8aW_-hUQmjSQEov6aUXMSuPtlpsaSvJKfvt42WXXnuagffePOZXFB8RKgTsbnYVmUwz5aoGxAr6CmT_prjEoW_KWrbN23VvWlV2spXvivcp7QCw7iVcFvb5r_Pe-a0gP4ptJOdFWjaje3HJBS_GJR7F8eBpdkaMbENcm45SsILE9624_dWgSL-Zs6BpCgdBWcQQZpF53nOkvES-Li4sTYk_nOdV8fP-6_Pdt_Lpx8Pj3e1TaSQOuawJoR6GlohqUo0ZwBpmqWyHtFGgkKlvWykH2DTGmE3HUnYWJSqSo8KuuSo-n-7uY_izcMp6dsnwNJHnsCSt6q5BBf2wOtuT08SQUmSr99HNFA8aQR-x6p0-Y9VHrBp6vWJdc5_ODZQMTTaSNy79C6-4-xpArb4vJx-v7744jjoZx97w6CKbrMfg_tP0Cp9NkO4</recordid><startdate>20111001</startdate><enddate>20111001</enddate><creator>Dudamell, N.V.</creator><creator>Ulacia, I.</creator><creator>Gálvez, F.</creator><creator>Yi, S.</creator><creator>Bohlen, J.</creator><creator>Letzig, D.</creator><creator>Hurtado, I.</creator><creator>Pérez-Prado, M.T.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20111001</creationdate><title>Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature</title><author>Dudamell, N.V. ; Ulacia, I. ; Gálvez, F. ; Yi, S. ; Bohlen, J. ; Letzig, D. ; Hurtado, I. ; Pérez-Prado, M.T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-2a102885aaa2a93c80fcee49f61ab9091ea7554480b3cccb6e446f1419a4d9163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>AZ31</topic><topic>Deformation</topic><topic>Dynamics</topic><topic>Exact sciences and technology</topic><topic>Grains</topic><topic>High strain rate</topic><topic>Magnesium</topic><topic>Magnesium base alloys</topic><topic>Metals. Metallurgy</topic><topic>Orientation</topic><topic>Recovery</topic><topic>Slip</topic><topic>Strain rate</topic><topic>Subdivisions</topic><topic>Twinning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dudamell, N.V.</creatorcontrib><creatorcontrib>Ulacia, I.</creatorcontrib><creatorcontrib>Gálvez, F.</creatorcontrib><creatorcontrib>Yi, S.</creatorcontrib><creatorcontrib>Bohlen, J.</creatorcontrib><creatorcontrib>Letzig, D.</creatorcontrib><creatorcontrib>Hurtado, I.</creatorcontrib><creatorcontrib>Pérez-Prado, M.T.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Acta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dudamell, N.V.</au><au>Ulacia, I.</au><au>Gálvez, F.</au><au>Yi, S.</au><au>Bohlen, J.</au><au>Letzig, D.</au><au>Hurtado, I.</au><au>Pérez-Prado, M.T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature</atitle><jtitle>Acta materialia</jtitle><date>2011-10-01</date><risdate>2011</risdate><volume>59</volume><issue>18</issue><spage>6949</spage><epage>6962</epage><pages>6949-6962</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>The microstructural evolution of an AZ31 rolled sheet during dynamic deformation at strain rates of ∼10
3
s
−1 has been investigated by electron backscatter diffraction, X-ray and neutron diffraction. The influence of orientation on the predominant deformation mechanisms and on the recovery processes taking place during deformation has been systematically examined. The results have been compared with those corresponding to the same alloy tested quasi-statically under equivalent conditions. It has been found that strain rate enhances the activation of
{
1
0
1
¯
2
}
extension twinning dramatically, while contraction and secondary twinning are not significantly influenced. The polarity of
{
1
0
1
¯
2
}
extension twinning is even reversed in some grains under selected testing conditions. Significant grain subdivision by the formation of geometrically necessary boundaries (GNBs) takes place during both quasi-static and dynamic deformation of this AZ31 alloy. It is remarkable that GNBs of high misorientations form even at the highest strain rates. The phenomenon of recovery has been found to be orientation dependent.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2011.07.047</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Acta materialia, 2011-10, Vol.59 (18), p.6949-6962 |
| issn | 1359-6454 1873-2453 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_926319078 |
| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences AZ31 Deformation Dynamics Exact sciences and technology Grains High strain rate Magnesium Magnesium base alloys Metals. Metallurgy Orientation Recovery Slip Strain rate Subdivisions Twinning |
| title | Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature |
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