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Influence of strain rate on mechanical properties and deformation texture of hot-pressed and rolled beryllium
Plastic deformation of hexagonal metals such as beryllium occurs by a mix of dislocation slip and deformation twinning mechanisms. Slip and twinning are controlled by different mechanisms at the atomic scale, and thus respond differently to variations in strain rate. In general, deformation twinning...
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| Published in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2010-07, Vol.527 (20), p.5181-5188 |
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| container_end_page | 5188 |
| container_issue | 20 |
| container_start_page | 5181 |
| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
| container_volume | 527 |
| creator | Sisneros, T.A. Brown, D.W. Clausen, B. Donati, D.C. Kabra, S. Blumenthal, W.R. Vogel, S.C. |
| description | Plastic deformation of hexagonal metals such as beryllium occurs by a mix of dislocation slip and deformation twinning mechanisms. Slip and twinning are controlled by different mechanisms at the atomic scale, and thus respond differently to variations in strain rate. In general, deformation twinning is expected to be favored by high strain rate conditions. Both textured and randomly textured polycrystalline beryllium samples were deformed at strain rates from 0.0001/s to 5000/s. The yield point was found to be strain rate insensitive over the 7+ orders of magnitude of strain rate. The hardening, however, is strongly rate dependent for some of the initial textures, depending on loading direction relative to the basal poles. Optical microscopy and neutron diffraction measurements of the crystallographic texture were carried out to monitor the evolution of the microstructure and, specifically, the activity of deformation twinning as a function of strain rate. The relative roles of the active slip and twin deformation mechanisms are linked to the observed rate dependence of the flow stress. |
| doi_str_mv | 10.1016/j.msea.2010.04.035 |
| format | article |
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Slip and twinning are controlled by different mechanisms at the atomic scale, and thus respond differently to variations in strain rate. In general, deformation twinning is expected to be favored by high strain rate conditions. Both textured and randomly textured polycrystalline beryllium samples were deformed at strain rates from 0.0001/s to 5000/s. The yield point was found to be strain rate insensitive over the 7+ orders of magnitude of strain rate. The hardening, however, is strongly rate dependent for some of the initial textures, depending on loading direction relative to the basal poles. Optical microscopy and neutron diffraction measurements of the crystallographic texture were carried out to monitor the evolution of the microstructure and, specifically, the activity of deformation twinning as a function of strain rate. 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A, Structural materials : properties, microstructure and processing, 2010-07, Vol.527 (20), p.5181-5188</ispartof><rights>2010 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-824de372fb1a639a9b4d513af47c2198cb1c12488939b9505ab6bb3c57660b743</citedby><cites>FETCH-LOGICAL-c428t-824de372fb1a639a9b4d513af47c2198cb1c12488939b9505ab6bb3c57660b743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,783,787,27937,27938</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22996370$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Sisneros, T.A.</creatorcontrib><creatorcontrib>Brown, D.W.</creatorcontrib><creatorcontrib>Clausen, B.</creatorcontrib><creatorcontrib>Donati, D.C.</creatorcontrib><creatorcontrib>Kabra, S.</creatorcontrib><creatorcontrib>Blumenthal, W.R.</creatorcontrib><creatorcontrib>Vogel, S.C.</creatorcontrib><title>Influence of strain rate on mechanical properties and deformation texture of hot-pressed and rolled beryllium</title><title>Materials science & engineering. A, Structural materials : properties, microstructure and processing</title><description>Plastic deformation of hexagonal metals such as beryllium occurs by a mix of dislocation slip and deformation twinning mechanisms. Slip and twinning are controlled by different mechanisms at the atomic scale, and thus respond differently to variations in strain rate. In general, deformation twinning is expected to be favored by high strain rate conditions. Both textured and randomly textured polycrystalline beryllium samples were deformed at strain rates from 0.0001/s to 5000/s. The yield point was found to be strain rate insensitive over the 7+ orders of magnitude of strain rate. The hardening, however, is strongly rate dependent for some of the initial textures, depending on loading direction relative to the basal poles. Optical microscopy and neutron diffraction measurements of the crystallographic texture were carried out to monitor the evolution of the microstructure and, specifically, the activity of deformation twinning as a function of strain rate. The relative roles of the active slip and twin deformation mechanisms are linked to the observed rate dependence of the flow stress.</description><subject>Beryllium</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Deformation</subject><subject>Deformation and plasticity (including yield, ductility, and superplasticity)</subject><subject>Deformation mechanisms</subject><subject>Deformation twinning</subject><subject>Exact sciences and technology</subject><subject>Materials science</subject><subject>Mechanical and acoustical properties of condensed matter</subject><subject>Mechanical properties of solids</subject><subject>Microstructure</subject><subject>Neutron diffraction</subject><subject>Other heat and thermomechanical treatments</subject><subject>Physics</subject><subject>Slip</subject><subject>Strain rate</subject><subject>Surface layer</subject><subject>Texture</subject><subject>Treatment of materials and its effects on microstructure and properties</subject><subject>Twinning</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-AU-9iKeuk49-BLyI-AWCFz2HJJ1ilrRdk1T035vdFY-eMgnPO5N5CDmnsKJA66v1aoioVwzyA4gV8OqALGjb8FJIXh-SBUhGywokPyYnMa4BgAqoFmR4Gns_42ixmPoipqDdWASd8nUsBrTvenRW-2ITpg2G5DAWeuyKDvspDDq5TCX8SnPY5d-nVG4CxojdDguT97k0GL69d_NwSo567SOe_Z5L8nZ_93r7WD6_PDzd3jyXVrA2lS0THfKG9YbqmkstjegqynUvGsuobK2hljLRtpJLIyuotKmN4bZq6hpMI_iSXO775m9_zBiTGly06L0ecZqjamqgshE7ku1JG6YYA_ZqE9ygw7eioLZq1Vpt1aqtWgVCZbU5dPHbXscspw96tC7-JRmTsuYNZO56z2He9dNhUNG6revOBbRJdZP7b8wPVIWQdQ</recordid><startdate>20100725</startdate><enddate>20100725</enddate><creator>Sisneros, T.A.</creator><creator>Brown, D.W.</creator><creator>Clausen, B.</creator><creator>Donati, D.C.</creator><creator>Kabra, S.</creator><creator>Blumenthal, W.R.</creator><creator>Vogel, S.C.</creator><general>Elsevier B.V</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>20100725</creationdate><title>Influence of strain rate on mechanical properties and deformation texture of hot-pressed and rolled beryllium</title><author>Sisneros, T.A. ; Brown, D.W. ; Clausen, B. ; Donati, D.C. ; Kabra, S. ; Blumenthal, W.R. ; Vogel, S.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-824de372fb1a639a9b4d513af47c2198cb1c12488939b9505ab6bb3c57660b743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Beryllium</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Deformation</topic><topic>Deformation and plasticity (including yield, ductility, and superplasticity)</topic><topic>Deformation mechanisms</topic><topic>Deformation twinning</topic><topic>Exact sciences and technology</topic><topic>Materials science</topic><topic>Mechanical and acoustical properties of condensed matter</topic><topic>Mechanical properties of solids</topic><topic>Microstructure</topic><topic>Neutron diffraction</topic><topic>Other heat and thermomechanical treatments</topic><topic>Physics</topic><topic>Slip</topic><topic>Strain rate</topic><topic>Surface layer</topic><topic>Texture</topic><topic>Treatment of materials and its effects on microstructure and properties</topic><topic>Twinning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sisneros, T.A.</creatorcontrib><creatorcontrib>Brown, D.W.</creatorcontrib><creatorcontrib>Clausen, B.</creatorcontrib><creatorcontrib>Donati, D.C.</creatorcontrib><creatorcontrib>Kabra, S.</creatorcontrib><creatorcontrib>Blumenthal, W.R.</creatorcontrib><creatorcontrib>Vogel, S.C.</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>Materials science & engineering. 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Slip and twinning are controlled by different mechanisms at the atomic scale, and thus respond differently to variations in strain rate. In general, deformation twinning is expected to be favored by high strain rate conditions. Both textured and randomly textured polycrystalline beryllium samples were deformed at strain rates from 0.0001/s to 5000/s. The yield point was found to be strain rate insensitive over the 7+ orders of magnitude of strain rate. The hardening, however, is strongly rate dependent for some of the initial textures, depending on loading direction relative to the basal poles. Optical microscopy and neutron diffraction measurements of the crystallographic texture were carried out to monitor the evolution of the microstructure and, specifically, the activity of deformation twinning as a function of strain rate. 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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2010-07, Vol.527 (20), p.5181-5188 |
| issn | 0921-5093 1873-4936 |
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| subjects | Beryllium Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Deformation Deformation and plasticity (including yield, ductility, and superplasticity) Deformation mechanisms Deformation twinning Exact sciences and technology Materials science Mechanical and acoustical properties of condensed matter Mechanical properties of solids Microstructure Neutron diffraction Other heat and thermomechanical treatments Physics Slip Strain rate Surface layer Texture Treatment of materials and its effects on microstructure and properties Twinning |
| title | Influence of strain rate on mechanical properties and deformation texture of hot-pressed and rolled beryllium |
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