Nucleation of Ni–Fe alloy near the spinodal
In molecular dynamics simulations, “non-classical” nucleation around the spinodal in Fe–Ni alloys is observed by controlling the composition. With increasing Fe concentration, metastable body-centered cubic (bcc) clusters are formed during pre-crystallization under the influence of the spinodal, and...
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| Veröffentlicht in: | Acta materialia 2008-09, Vol.56 (15), p.4022-4027 |
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| creator | Lü, Y.J. Chen, M. Yang, H. Yu, D.Q. |
| description | In molecular dynamics simulations, “non-classical” nucleation around the spinodal in Fe–Ni alloys is observed by controlling the composition. With increasing Fe concentration, metastable body-centered cubic (bcc) clusters are formed during pre-crystallization under the influence of the spinodal, and then grow into face-centered cubic (fcc)-ordered critical nuclei. When the composition reaches 75
at.% Fe, this transformation is suppressed and the bcc, rather than fcc, symmetry dominates the structure of critical nuclei, a typical nucleation behavior near the spinodal. Further increase in the Fe concentration depresses nucleation below the spinodal temperature. As a consequence, two transient bcc phases characterized by high and low densities appear upon reaching the critical size. |
| doi_str_mv | 10.1016/j.actamat.2008.04.025 |
| format | Article |
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at.% Fe, this transformation is suppressed and the bcc, rather than fcc, symmetry dominates the structure of critical nuclei, a typical nucleation behavior near the spinodal. Further increase in the Fe concentration depresses nucleation below the spinodal temperature. As a consequence, two transient bcc phases characterized by high and low densities appear upon reaching the critical size.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2008.04.025</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Body centered cubic lattice ; Concentration (composition) ; Density ; Exact sciences and technology ; Intermetallic compounds ; Iron ; Metals. Metallurgy ; Molecular dynamics simulations ; Nickel base alloys ; Ni–Fe alloy ; Nucleation ; Nucleation and growth ; Phases ; Spinodal decomposition ; Transformations</subject><ispartof>Acta materialia, 2008-09, Vol.56 (15), p.4022-4027</ispartof><rights>2008 Acta Materialia Inc.</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-d73f5d0a676c33dd7d4d2ec298feb0370d1382a1465fc2ad95b3e75f01664ebf3</citedby><cites>FETCH-LOGICAL-c403t-d73f5d0a676c33dd7d4d2ec298feb0370d1382a1465fc2ad95b3e75f01664ebf3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.actamat.2008.04.025$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20631799$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Lü, Y.J.</creatorcontrib><creatorcontrib>Chen, M.</creatorcontrib><creatorcontrib>Yang, H.</creatorcontrib><creatorcontrib>Yu, D.Q.</creatorcontrib><title>Nucleation of Ni–Fe alloy near the spinodal</title><title>Acta materialia</title><description>In molecular dynamics simulations, “non-classical” nucleation around the spinodal in Fe–Ni alloys is observed by controlling the composition. With increasing Fe concentration, metastable body-centered cubic (bcc) clusters are formed during pre-crystallization under the influence of the spinodal, and then grow into face-centered cubic (fcc)-ordered critical nuclei. When the composition reaches 75
at.% Fe, this transformation is suppressed and the bcc, rather than fcc, symmetry dominates the structure of critical nuclei, a typical nucleation behavior near the spinodal. Further increase in the Fe concentration depresses nucleation below the spinodal temperature. As a consequence, two transient bcc phases characterized by high and low densities appear upon reaching the critical size.</description><subject>Applied sciences</subject><subject>Body centered cubic lattice</subject><subject>Concentration (composition)</subject><subject>Density</subject><subject>Exact sciences and technology</subject><subject>Intermetallic compounds</subject><subject>Iron</subject><subject>Metals. Metallurgy</subject><subject>Molecular dynamics simulations</subject><subject>Nickel base alloys</subject><subject>Ni–Fe alloy</subject><subject>Nucleation</subject><subject>Nucleation and growth</subject><subject>Phases</subject><subject>Spinodal decomposition</subject><subject>Transformations</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KAzEURoMoWKuPIMxGcTNjficzK5FiVSh1o-uQJjeYks7UZCp05zv4hj6JkRaXurp3cb77cQ9C5wRXBJP6ellpM-iVHiqKcVNhXmEqDtCINJKVlAt2mHcm2rLmgh-jk5SWGBMqOR6hcr4xAfTg-67oXTH3Xx-fUyh0CP226EDHYniFIq1911sdTtGR0yHB2X6O0cv07nnyUM6e7h8nt7PScMyG0krmhMW6lrVhzFppuaVgaNs4WGAmsSWsoZrwWjhDtW3FgoEULj9Tc1g4NkaXu7vr2L9tIA1q5ZOBEHQH_SYpxhlthKQZvPoTJLihpG0yn1GxQ03sU4rg1Dr6lY7bDKkfj2qp9h7Vj0eFucoec-5iX6GT0cFF3RmffsMU14zIts3czY6DLObdQ1TJeOgMWB_BDMr2_p-mb9qainI</recordid><startdate>20080901</startdate><enddate>20080901</enddate><creator>Lü, Y.J.</creator><creator>Chen, M.</creator><creator>Yang, H.</creator><creator>Yu, D.Q.</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>20080901</creationdate><title>Nucleation of Ni–Fe alloy near the spinodal</title><author>Lü, Y.J. ; Chen, M. ; Yang, H. ; Yu, D.Q.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-d73f5d0a676c33dd7d4d2ec298feb0370d1382a1465fc2ad95b3e75f01664ebf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Applied sciences</topic><topic>Body centered cubic lattice</topic><topic>Concentration (composition)</topic><topic>Density</topic><topic>Exact sciences and technology</topic><topic>Intermetallic compounds</topic><topic>Iron</topic><topic>Metals. Metallurgy</topic><topic>Molecular dynamics simulations</topic><topic>Nickel base alloys</topic><topic>Ni–Fe alloy</topic><topic>Nucleation</topic><topic>Nucleation and growth</topic><topic>Phases</topic><topic>Spinodal decomposition</topic><topic>Transformations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lü, Y.J.</creatorcontrib><creatorcontrib>Chen, M.</creatorcontrib><creatorcontrib>Yang, H.</creatorcontrib><creatorcontrib>Yu, D.Q.</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>Lü, Y.J.</au><au>Chen, M.</au><au>Yang, H.</au><au>Yu, D.Q.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nucleation of Ni–Fe alloy near the spinodal</atitle><jtitle>Acta materialia</jtitle><date>2008-09-01</date><risdate>2008</risdate><volume>56</volume><issue>15</issue><spage>4022</spage><epage>4027</epage><pages>4022-4027</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>In molecular dynamics simulations, “non-classical” nucleation around the spinodal in Fe–Ni alloys is observed by controlling the composition. With increasing Fe concentration, metastable body-centered cubic (bcc) clusters are formed during pre-crystallization under the influence of the spinodal, and then grow into face-centered cubic (fcc)-ordered critical nuclei. When the composition reaches 75
at.% Fe, this transformation is suppressed and the bcc, rather than fcc, symmetry dominates the structure of critical nuclei, a typical nucleation behavior near the spinodal. Further increase in the Fe concentration depresses nucleation below the spinodal temperature. As a consequence, two transient bcc phases characterized by high and low densities appear upon reaching the critical size.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2008.04.025</doi><tpages>6</tpages></addata></record> |
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| subjects | Applied sciences Body centered cubic lattice Concentration (composition) Density Exact sciences and technology Intermetallic compounds Iron Metals. Metallurgy Molecular dynamics simulations Nickel base alloys Ni–Fe alloy Nucleation Nucleation and growth Phases Spinodal decomposition Transformations |
| title | Nucleation of Ni–Fe alloy near the spinodal |
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