Suppression of irradiation hardening in nanoscale V/Ag multilayers
Nanoindentation was used to measure hardness before and after room temperature He ion implantation on sputter-deposited V/Ag multilayers of different layer thickness as well as pure Ag and V. The radiation-induced hardening was found to decrease with decreasing individual layer thickness. No change...
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| Veröffentlicht in: | Acta materialia 2011-09, Vol.59 (16), p.6331-6340 |
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| container_title | Acta materialia |
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| creator | Wei, Q.M. Li, N. Mara, N. Nastasi, M. Misra, A. |
| description | Nanoindentation was used to measure hardness before and after room temperature He ion implantation on sputter-deposited V/Ag multilayers of different layer thickness as well as pure Ag and V. The radiation-induced hardening was found to decrease with decreasing individual layer thickness. No change in hardness after implantation was measured in multilayers with a layer thickness of less than 10nm, which is of the order of the average spacing of He bubbles. The pure V films exhibit significant hardening due to a dense distribution of 0.8nm diameter He bubbles, but in the nanocrystalline pure Ag films bubbles grow to a diameter of approximately 20nm and become ineffective in causing hardening. A model describing layer-thickness-dependent radiation hardening in multilayers was developed by extending the Friedel model to take into account the layer thickness and the He bubble spacing. |
| doi_str_mv | 10.1016/j.actamat.2011.06.043 |
| format | Article |
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The radiation-induced hardening was found to decrease with decreasing individual layer thickness. No change in hardness after implantation was measured in multilayers with a layer thickness of less than 10nm, which is of the order of the average spacing of He bubbles. The pure V films exhibit significant hardening due to a dense distribution of 0.8nm diameter He bubbles, but in the nanocrystalline pure Ag films bubbles grow to a diameter of approximately 20nm and become ineffective in causing hardening. A model describing layer-thickness-dependent radiation hardening in multilayers was developed by extending the Friedel model to take into account the layer thickness and the He bubble spacing.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2011.06.043</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Bubbles ; Dislocation ; Exact sciences and technology ; Hardening ; Hardness ; Mathematical models ; Metals. Metallurgy ; Multilayers ; Nanocomposites ; Nanoindentation ; Nanostructure ; nuclear (including radiation effects), defects, mechanical behavior, materials and chemistry by design, synthesis (novel materials), synthesis (scalable processing) ; Silver ; Transmission electron microscopy</subject><ispartof>Acta materialia, 2011-09, Vol.59 (16), p.6331-6340</ispartof><rights>2011 Acta Materialia Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-4b7d0436398add79dc79dbef70b7ec26ac5ba23c694950875cc9f4eea35437a93</citedby><cites>FETCH-LOGICAL-c398t-4b7d0436398add79dc79dbef70b7ec26ac5ba23c694950875cc9f4eea35437a93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1359645411004575$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24475939$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1067108$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Wei, Q.M.</creatorcontrib><creatorcontrib>Li, N.</creatorcontrib><creatorcontrib>Mara, N.</creatorcontrib><creatorcontrib>Nastasi, M.</creatorcontrib><creatorcontrib>Misra, A.</creatorcontrib><creatorcontrib>Center for Materials at Irradiation and Mechanical Extremes (CMIME)</creatorcontrib><creatorcontrib>Energy Frontier Research Centers (EFRC)</creatorcontrib><title>Suppression of irradiation hardening in nanoscale V/Ag multilayers</title><title>Acta materialia</title><description>Nanoindentation was used to measure hardness before and after room temperature He ion implantation on sputter-deposited V/Ag multilayers of different layer thickness as well as pure Ag and V. The radiation-induced hardening was found to decrease with decreasing individual layer thickness. No change in hardness after implantation was measured in multilayers with a layer thickness of less than 10nm, which is of the order of the average spacing of He bubbles. The pure V films exhibit significant hardening due to a dense distribution of 0.8nm diameter He bubbles, but in the nanocrystalline pure Ag films bubbles grow to a diameter of approximately 20nm and become ineffective in causing hardening. A model describing layer-thickness-dependent radiation hardening in multilayers was developed by extending the Friedel model to take into account the layer thickness and the He bubble spacing.</description><subject>Applied sciences</subject><subject>Bubbles</subject><subject>Dislocation</subject><subject>Exact sciences and technology</subject><subject>Hardening</subject><subject>Hardness</subject><subject>Mathematical models</subject><subject>Metals. Metallurgy</subject><subject>Multilayers</subject><subject>Nanocomposites</subject><subject>Nanoindentation</subject><subject>Nanostructure</subject><subject>nuclear (including radiation effects), defects, mechanical behavior, materials and chemistry by design, synthesis (novel materials), synthesis (scalable processing)</subject><subject>Silver</subject><subject>Transmission electron microscopy</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkE1rGzEQhpfQQBInPyGwFEpPu5FW0so6ldQkbSCQQz-uYjw7m8isJVeSC_731WKTaw9iNPDMzMNbVbectZzx_m7TAmbYQm47xnnL-pZJcVZd8qUWTSeV-FD-Qpmml0peVFcpbRjjnZbssvr6Y7_bRUrJBV-HsXYxwuAgz-0bxIG886-187UHHxLCRPXvu_vXerufspvgQDFdV-cjTIluTnVR_Xp8-Ln63jy_fHta3T83KMwyN3Kth-LVlwaGQZsBy1vTqNlaE3Y9oFpDJ7A30ii21ArRjJIIhJJCgxGL6uNxb0jZ2YQuE75h8J4wW856zdmyQJ-P0C6GP3tK2W5dQpom8BT2yRpuTEE7XUh1JDGGlCKNdhfdFuKh7LJzrnZjT7naOVfLelv8y9yn0wWY8xgjeHTpfbiTUisjZt0vR45KJn8dxVmZPNLg4mw8BPefS_8AiGuQkw</recordid><startdate>20110901</startdate><enddate>20110901</enddate><creator>Wei, Q.M.</creator><creator>Li, N.</creator><creator>Mara, N.</creator><creator>Nastasi, M.</creator><creator>Misra, A.</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><scope>OTOTI</scope></search><sort><creationdate>20110901</creationdate><title>Suppression of irradiation hardening in nanoscale V/Ag multilayers</title><author>Wei, Q.M. ; Li, N. ; Mara, N. ; Nastasi, M. ; Misra, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-4b7d0436398add79dc79dbef70b7ec26ac5ba23c694950875cc9f4eea35437a93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Bubbles</topic><topic>Dislocation</topic><topic>Exact sciences and technology</topic><topic>Hardening</topic><topic>Hardness</topic><topic>Mathematical models</topic><topic>Metals. Metallurgy</topic><topic>Multilayers</topic><topic>Nanocomposites</topic><topic>Nanoindentation</topic><topic>Nanostructure</topic><topic>nuclear (including radiation effects), defects, mechanical behavior, materials and chemistry by design, synthesis (novel materials), synthesis (scalable processing)</topic><topic>Silver</topic><topic>Transmission electron microscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wei, Q.M.</creatorcontrib><creatorcontrib>Li, N.</creatorcontrib><creatorcontrib>Mara, N.</creatorcontrib><creatorcontrib>Nastasi, M.</creatorcontrib><creatorcontrib>Misra, A.</creatorcontrib><creatorcontrib>Center for Materials at Irradiation and Mechanical Extremes (CMIME)</creatorcontrib><creatorcontrib>Energy Frontier Research Centers (EFRC)</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><collection>OSTI.GOV</collection><jtitle>Acta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wei, Q.M.</au><au>Li, N.</au><au>Mara, N.</au><au>Nastasi, M.</au><au>Misra, A.</au><aucorp>Center for Materials at Irradiation and Mechanical Extremes (CMIME)</aucorp><aucorp>Energy Frontier Research Centers (EFRC)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Suppression of irradiation hardening in nanoscale V/Ag multilayers</atitle><jtitle>Acta materialia</jtitle><date>2011-09-01</date><risdate>2011</risdate><volume>59</volume><issue>16</issue><spage>6331</spage><epage>6340</epage><pages>6331-6340</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>Nanoindentation was used to measure hardness before and after room temperature He ion implantation on sputter-deposited V/Ag multilayers of different layer thickness as well as pure Ag and V. The radiation-induced hardening was found to decrease with decreasing individual layer thickness. No change in hardness after implantation was measured in multilayers with a layer thickness of less than 10nm, which is of the order of the average spacing of He bubbles. The pure V films exhibit significant hardening due to a dense distribution of 0.8nm diameter He bubbles, but in the nanocrystalline pure Ag films bubbles grow to a diameter of approximately 20nm and become ineffective in causing hardening. A model describing layer-thickness-dependent radiation hardening in multilayers was developed by extending the Friedel model to take into account the layer thickness and the He bubble spacing.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2011.06.043</doi><tpages>10</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Bubbles Dislocation Exact sciences and technology Hardening Hardness Mathematical models Metals. Metallurgy Multilayers Nanocomposites Nanoindentation Nanostructure nuclear (including radiation effects), defects, mechanical behavior, materials and chemistry by design, synthesis (novel materials), synthesis (scalable processing) Silver Transmission electron microscopy |
| title | Suppression of irradiation hardening in nanoscale V/Ag multilayers |
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