Microstructure and thermal behavior of two-phase amorphous Ni–Nb–Y alloy
A novel phase-separated Ni-based amorphous alloy is prepared in a glass forming system by rapid quenching of a Ni 58.5Nb 20.25Y 21.25 melt. The microstructure consists of two amorphous Nb-enriched and Y-enriched regions with a size distribution from micrometer dimensions down to several nanometers....
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| Veröffentlicht in: | Scripta materialia 2005-08, Vol.53 (3), p.271-274 |
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| container_title | Scripta materialia |
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| creator | Mattern, Norbert Kühn, Uta Gebert, Annett Gemming, Thomas Zinkevich, M. Wendrock, Horst Schultz, Ludwig |
| description | A novel phase-separated Ni-based amorphous alloy is prepared in a glass forming system by rapid quenching of a Ni
58.5Nb
20.25Y
21.25 melt. The microstructure consists of two amorphous Nb-enriched and Y-enriched regions with a size distribution from micrometer dimensions down to several nanometers. Decomposition takes place in the melt prior to solidification. The miscibility gap in the solid and liquid state of the binary Nb–Y system extends into the ternary Ni–Nb–Y alloy as a consequence of the positive mixing enthalpy between Nb and Y. The two-phase amorphous Ni
58.5Nb
20.25Y
21.25 alloy crystallizes in a first step by the primary precipitation of the cubic Ni
2Y phase from the Y-rich amorphous phase. At much higher temperatures the remaining Nb-rich amorphous phase crystallizes into Ni
7Nb
6. |
| doi_str_mv | 10.1016/j.scriptamat.2005.04.018 |
| format | Article |
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58.5Nb
20.25Y
21.25 melt. The microstructure consists of two amorphous Nb-enriched and Y-enriched regions with a size distribution from micrometer dimensions down to several nanometers. Decomposition takes place in the melt prior to solidification. The miscibility gap in the solid and liquid state of the binary Nb–Y system extends into the ternary Ni–Nb–Y alloy as a consequence of the positive mixing enthalpy between Nb and Y. The two-phase amorphous Ni
58.5Nb
20.25Y
21.25 alloy crystallizes in a first step by the primary precipitation of the cubic Ni
2Y phase from the Y-rich amorphous phase. At much higher temperatures the remaining Nb-rich amorphous phase crystallizes into Ni
7Nb
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58.5Nb
20.25Y
21.25 melt. The microstructure consists of two amorphous Nb-enriched and Y-enriched regions with a size distribution from micrometer dimensions down to several nanometers. Decomposition takes place in the melt prior to solidification. The miscibility gap in the solid and liquid state of the binary Nb–Y system extends into the ternary Ni–Nb–Y alloy as a consequence of the positive mixing enthalpy between Nb and Y. The two-phase amorphous Ni
58.5Nb
20.25Y
21.25 alloy crystallizes in a first step by the primary precipitation of the cubic Ni
2Y phase from the Y-rich amorphous phase. At much higher temperatures the remaining Nb-rich amorphous phase crystallizes into Ni
7Nb
6.</description><subject>Alloy systems</subject><subject>Applied sciences</subject><subject>Crystallization</subject><subject>Decomposition</subject><subject>Exact sciences and technology</subject><subject>Liquids</subject><subject>Melts</subject><subject>Metallic glasses</subject><subject>Metals. Metallurgy</subject><subject>Micrometers</subject><subject>Microstructure</subject><subject>Nanostructure</subject><subject>Nickel alloys</subject><subject>Nickel base alloys</subject><subject>Niobium</subject><subject>Phase separation</subject><issn>1359-6462</issn><issn>0956-716X</issn><issn>1872-8456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqFkLtOwzAUQCMEEqXwD1lALAnXTuI4I1S8pFIWGJgsx7EVV0kcbLeoG__AH_IluGolNlh8ratzXyeKYgQpAkSulqkTVo-e99ynGKBIIU8B0YNogmiJE5oX5DD8s6JKSE7wcXTi3BIACMJoEs2ftLDGebsSfmVlzIcm9q20Pe_iWrZ8rY2NjYr9h0nGlrtA9MaOrVm5eKG_P78WdXjeYt51ZnMaHSneOXm2j9Po9e72ZfaQzJ_vH2fX80TkJfUJJWFxlStQNVEkK6iiIUWbGnLCm6wQVaUEIRWXkpI6qwGXtaCAqlrJCmWQTaOLXd_RmveVdJ712gnZdXyQYTGGKYUKAw7g5Z8gAopRiUmGAkp36FaHs1Kx0eqe202A2NY0W7Jf02xrmkHOgulQer6fwp3gnbJ8ENr91pNwXonywN3sOBncrLW0oaGWg5CNtlJ41hj9_7AfiVibUA</recordid><startdate>20050801</startdate><enddate>20050801</enddate><creator>Mattern, Norbert</creator><creator>Kühn, Uta</creator><creator>Gebert, Annett</creator><creator>Gemming, Thomas</creator><creator>Zinkevich, M.</creator><creator>Wendrock, Horst</creator><creator>Schultz, Ludwig</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>7U5</scope><scope>L7M</scope></search><sort><creationdate>20050801</creationdate><title>Microstructure and thermal behavior of two-phase amorphous Ni–Nb–Y alloy</title><author>Mattern, Norbert ; Kühn, Uta ; Gebert, Annett ; Gemming, Thomas ; Zinkevich, M. ; Wendrock, Horst ; Schultz, Ludwig</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c478t-86016f4f0fb6f6358f88608db046ad35c99fc669aee86b3b027bc8019bfe91303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Alloy systems</topic><topic>Applied sciences</topic><topic>Crystallization</topic><topic>Decomposition</topic><topic>Exact sciences and technology</topic><topic>Liquids</topic><topic>Melts</topic><topic>Metallic glasses</topic><topic>Metals. Metallurgy</topic><topic>Micrometers</topic><topic>Microstructure</topic><topic>Nanostructure</topic><topic>Nickel alloys</topic><topic>Nickel base alloys</topic><topic>Niobium</topic><topic>Phase separation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mattern, Norbert</creatorcontrib><creatorcontrib>Kühn, Uta</creatorcontrib><creatorcontrib>Gebert, Annett</creatorcontrib><creatorcontrib>Gemming, Thomas</creatorcontrib><creatorcontrib>Zinkevich, M.</creatorcontrib><creatorcontrib>Wendrock, Horst</creatorcontrib><creatorcontrib>Schultz, Ludwig</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>Solid State and Superconductivity Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Scripta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mattern, Norbert</au><au>Kühn, Uta</au><au>Gebert, Annett</au><au>Gemming, Thomas</au><au>Zinkevich, M.</au><au>Wendrock, Horst</au><au>Schultz, Ludwig</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and thermal behavior of two-phase amorphous Ni–Nb–Y alloy</atitle><jtitle>Scripta materialia</jtitle><date>2005-08-01</date><risdate>2005</risdate><volume>53</volume><issue>3</issue><spage>271</spage><epage>274</epage><pages>271-274</pages><issn>1359-6462</issn><issn>0956-716X</issn><eissn>1872-8456</eissn><abstract>A novel phase-separated Ni-based amorphous alloy is prepared in a glass forming system by rapid quenching of a Ni
58.5Nb
20.25Y
21.25 melt. The microstructure consists of two amorphous Nb-enriched and Y-enriched regions with a size distribution from micrometer dimensions down to several nanometers. Decomposition takes place in the melt prior to solidification. The miscibility gap in the solid and liquid state of the binary Nb–Y system extends into the ternary Ni–Nb–Y alloy as a consequence of the positive mixing enthalpy between Nb and Y. The two-phase amorphous Ni
58.5Nb
20.25Y
21.25 alloy crystallizes in a first step by the primary precipitation of the cubic Ni
2Y phase from the Y-rich amorphous phase. At much higher temperatures the remaining Nb-rich amorphous phase crystallizes into Ni
7Nb
6.</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.scriptamat.2005.04.018</doi><tpages>4</tpages></addata></record> |
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| ispartof | Scripta materialia, 2005-08, Vol.53 (3), p.271-274 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Alloy systems Applied sciences Crystallization Decomposition Exact sciences and technology Liquids Melts Metallic glasses Metals. Metallurgy Micrometers Microstructure Nanostructure Nickel alloys Nickel base alloys Niobium Phase separation |
| title | Microstructure and thermal behavior of two-phase amorphous Ni–Nb–Y alloy |
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