Microtextural investigation of hydrided α-uranium
The local orientation features in as-cast α-uranium were investigated in order to ascertain the influence of texture and heterogeneity in the microstructure on hydride initiation and growth. Several samples were interrogated via automated electron back-scattered diffraction measurements in the post-...
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| Veröffentlicht in: | Journal of alloys and compounds 2004-02, Vol.365 (1), p.138-148 |
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| container_title | Journal of alloys and compounds |
| container_volume | 365 |
| creator | Bingert, J.F Hanrahan, R.J Field, R.D Dickerson, P.O |
| description | The local orientation features in as-cast α-uranium were investigated in order to ascertain the influence of texture and heterogeneity in the microstructure on hydride initiation and growth. Several samples were interrogated via automated electron back-scattered diffraction measurements in the post-hydride state. Characterization included orientation mapping, deformation twin identification, and grain boundary analysis. It was found that preferential hydride initiation sites were associated with general high-angle grain boundaries, low-angle boundaries, and twin boundaries of two systems. Linear segregation or precipitation features suggest the existence of unresolved twins that could be correlated with many of the remaining hydrides. The tendency of certain orientations to exhibit differing hydride potentials based on atomic density in the habit plane was also considered. The results suggest the dominant role of enhanced sub-surface hydrogen diffusion at misoriented regions in controlling hydride nucleation and growth. |
| doi_str_mv | 10.1016/S0925-8388(03)00647-9 |
| format | Article |
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Several samples were interrogated via automated electron back-scattered diffraction measurements in the post-hydride state. Characterization included orientation mapping, deformation twin identification, and grain boundary analysis. It was found that preferential hydride initiation sites were associated with general high-angle grain boundaries, low-angle boundaries, and twin boundaries of two systems. Linear segregation or precipitation features suggest the existence of unresolved twins that could be correlated with many of the remaining hydrides. The tendency of certain orientations to exhibit differing hydride potentials based on atomic density in the habit plane was also considered. The results suggest the dominant role of enhanced sub-surface hydrogen diffusion at misoriented regions in controlling hydride nucleation and growth.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/S0925-8388(03)00647-9</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Actinide alloys ; Applied sciences ; Condensed matter: structure, mechanical and thermal properties ; Cross-disciplinary physics: materials science; rheology ; Equations of state, phase equilibria, and phase transitions ; Exact sciences and technology ; Gas–solid reactions ; GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE ; Materials science ; Metal hydrides ; Metals. Metallurgy ; Microstructure ; Physics ; Solubility, segregation, and mixing; phase separation ; Treatment of materials and its effects on microstructure and properties</subject><ispartof>Journal of alloys and compounds, 2004-02, Vol.365 (1), p.138-148</ispartof><rights>2003</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c415t-7c181182c2830dbfb697b36fba16770f119e00e1e9789917e0dc282b3276f20f3</citedby><cites>FETCH-LOGICAL-c415t-7c181182c2830dbfb697b36fba16770f119e00e1e9789917e0dc282b3276f20f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0925-8388(03)00647-9$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,778,782,883,3539,27911,27912,45982</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15521766$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/810150$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Bingert, J.F</creatorcontrib><creatorcontrib>Hanrahan, R.J</creatorcontrib><creatorcontrib>Field, R.D</creatorcontrib><creatorcontrib>Dickerson, P.O</creatorcontrib><creatorcontrib>Los Alamos National Laboratory (LANL), Los Alamos, NM</creatorcontrib><title>Microtextural investigation of hydrided α-uranium</title><title>Journal of alloys and compounds</title><description>The local orientation features in as-cast α-uranium were investigated in order to ascertain the influence of texture and heterogeneity in the microstructure on hydride initiation and growth. Several samples were interrogated via automated electron back-scattered diffraction measurements in the post-hydride state. Characterization included orientation mapping, deformation twin identification, and grain boundary analysis. It was found that preferential hydride initiation sites were associated with general high-angle grain boundaries, low-angle boundaries, and twin boundaries of two systems. Linear segregation or precipitation features suggest the existence of unresolved twins that could be correlated with many of the remaining hydrides. The tendency of certain orientations to exhibit differing hydride potentials based on atomic density in the habit plane was also considered. The results suggest the dominant role of enhanced sub-surface hydrogen diffusion at misoriented regions in controlling hydride nucleation and growth.</description><subject>Actinide alloys</subject><subject>Applied sciences</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Equations of state, phase equilibria, and phase transitions</subject><subject>Exact sciences and technology</subject><subject>Gas–solid reactions</subject><subject>GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE</subject><subject>Materials science</subject><subject>Metal hydrides</subject><subject>Metals. Metallurgy</subject><subject>Microstructure</subject><subject>Physics</subject><subject>Solubility, segregation, and mixing; phase separation</subject><subject>Treatment of materials and its effects on microstructure and properties</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KAzEUhYMoWKuPINSFoIvRe5NOflYixT-ouFDXYSaT2Eg7U5JpsY_li_hMZjqiS1fZfOfmfIeQY4QLBOSXz6Bonkkm5RmwcwA-FpnaIQOUgmVjztUuGfwi--QgxncAQMVwQOijN6Fp7Ue7CsV85Ou1ja1_K1rf1KPGjWabKvjKVqOvzywRtV8tDsmeK-bRHv28Q_J6e_Myuc-mT3cPk-tpZsaYt5kwKBElNVQyqEpXciVKxl1ZIBcCHKKyABatElIpFBaqhNKSUcEdBceG5KS_26RGOhrfWjMzTV1b02qZzHNITN4zSSLGYJ1eBr8owkYj6G4cvR1Hd-YamN6Oo1XKnfa5ZRFNMXfJzPj4F85zioLzxF31nE2ia29D18PWxlY-dDWqxv_z0zcvi3hc</recordid><startdate>20040225</startdate><enddate>20040225</enddate><creator>Bingert, J.F</creator><creator>Hanrahan, R.J</creator><creator>Field, R.D</creator><creator>Dickerson, P.O</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20040225</creationdate><title>Microtextural investigation of hydrided α-uranium</title><author>Bingert, J.F ; Hanrahan, R.J ; Field, R.D ; Dickerson, P.O</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-7c181182c2830dbfb697b36fba16770f119e00e1e9789917e0dc282b3276f20f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Actinide alloys</topic><topic>Applied sciences</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Equations of state, phase equilibria, and phase transitions</topic><topic>Exact sciences and technology</topic><topic>Gas–solid reactions</topic><topic>GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE</topic><topic>Materials science</topic><topic>Metal hydrides</topic><topic>Metals. Metallurgy</topic><topic>Microstructure</topic><topic>Physics</topic><topic>Solubility, segregation, and mixing; phase separation</topic><topic>Treatment of materials and its effects on microstructure and properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bingert, J.F</creatorcontrib><creatorcontrib>Hanrahan, R.J</creatorcontrib><creatorcontrib>Field, R.D</creatorcontrib><creatorcontrib>Dickerson, P.O</creatorcontrib><creatorcontrib>Los Alamos National Laboratory (LANL), Los Alamos, NM</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bingert, J.F</au><au>Hanrahan, R.J</au><au>Field, R.D</au><au>Dickerson, P.O</au><aucorp>Los Alamos National Laboratory (LANL), Los Alamos, NM</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microtextural investigation of hydrided α-uranium</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2004-02-25</date><risdate>2004</risdate><volume>365</volume><issue>1</issue><spage>138</spage><epage>148</epage><pages>138-148</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The local orientation features in as-cast α-uranium were investigated in order to ascertain the influence of texture and heterogeneity in the microstructure on hydride initiation and growth. Several samples were interrogated via automated electron back-scattered diffraction measurements in the post-hydride state. Characterization included orientation mapping, deformation twin identification, and grain boundary analysis. It was found that preferential hydride initiation sites were associated with general high-angle grain boundaries, low-angle boundaries, and twin boundaries of two systems. Linear segregation or precipitation features suggest the existence of unresolved twins that could be correlated with many of the remaining hydrides. The tendency of certain orientations to exhibit differing hydride potentials based on atomic density in the habit plane was also considered. The results suggest the dominant role of enhanced sub-surface hydrogen diffusion at misoriented regions in controlling hydride nucleation and growth.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/S0925-8388(03)00647-9</doi><tpages>11</tpages></addata></record> |
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| ispartof | Journal of alloys and compounds, 2004-02, Vol.365 (1), p.138-148 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Actinide alloys Applied sciences Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Equations of state, phase equilibria, and phase transitions Exact sciences and technology Gas–solid reactions GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE Materials science Metal hydrides Metals. Metallurgy Microstructure Physics Solubility, segregation, and mixing phase separation Treatment of materials and its effects on microstructure and properties |
| title | Microtextural investigation of hydrided α-uranium |
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