Experimental identification of the degenerated equilibrium and thermodynamic modeling in the Al–Nb system
In order to ascertain the reaction type for the degenerated equilibrium among liquid, (Al) and NbAl 3, differential scanning calorimetry (DSC) measurements with heating and cooling rates of 2, 5 and 10 K/min are performed for the annealed pure Al and Al 0.97Nb 0.03 (atomic fraction) samples. The deg...
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| Veröffentlicht in: | Journal of alloys and compounds 2008-07, Vol.460 (1), p.632-638 |
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| container_title | Journal of alloys and compounds |
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| creator | Zhu, Zhijun Du, Yong Zhang, Lijun Chen, Hailin Xu, Honghui Tang, Chengying |
| description | In order to ascertain the reaction type for the degenerated equilibrium among liquid, (Al) and NbAl
3, differential scanning calorimetry (DSC) measurements with heating and cooling rates of 2, 5 and 10
K/min are performed for the annealed pure Al and Al
0.97Nb
0.03 (atomic fraction) samples. The degenerated equilibrium is identified to be a peritectic one by extrapolating the heating rates to 0
K/min. A set of self-consistent thermodynamic parameters for the Al–Nb system is then obtained by means of the calculation of phase diagram (CALPHAD) approach applied to the experimental phase diagram and thermodynamic data from the literature and the present work. The calculated phase diagram and thermodynamic properties agree well with the corresponding experimental ones. The unusual feature associated with the previous modeling (
i.e., the appearance of ordered Bcc_B2 phase at low temperatures) is avoided in the present modeling. |
| doi_str_mv | 10.1016/j.jallcom.2007.06.033 |
| format | Article |
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3, differential scanning calorimetry (DSC) measurements with heating and cooling rates of 2, 5 and 10
K/min are performed for the annealed pure Al and Al
0.97Nb
0.03 (atomic fraction) samples. The degenerated equilibrium is identified to be a peritectic one by extrapolating the heating rates to 0
K/min. A set of self-consistent thermodynamic parameters for the Al–Nb system is then obtained by means of the calculation of phase diagram (CALPHAD) approach applied to the experimental phase diagram and thermodynamic data from the literature and the present work. The calculated phase diagram and thermodynamic properties agree well with the corresponding experimental ones. The unusual feature associated with the previous modeling (
i.e., the appearance of ordered Bcc_B2 phase at low temperatures) is avoided in the present modeling.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2007.06.033</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Al–Nb phase diagram ; Cross-disciplinary physics: materials science; rheology ; Differential scanning calorimetry ; Exact sciences and technology ; High-temperature alloys ; Materials science ; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations ; Phase diagrams of metals and alloys ; Physics ; Thermodynamic modeling</subject><ispartof>Journal of alloys and compounds, 2008-07, Vol.460 (1), p.632-638</ispartof><rights>2007 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-bec7cf683bf8564f8896404df157da0b65d6c53a99b4fe209f8f62fd82027a3d3</citedby><cites>FETCH-LOGICAL-c370t-bec7cf683bf8564f8896404df157da0b65d6c53a99b4fe209f8f62fd82027a3d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2007.06.033$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20434695$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhu, Zhijun</creatorcontrib><creatorcontrib>Du, Yong</creatorcontrib><creatorcontrib>Zhang, Lijun</creatorcontrib><creatorcontrib>Chen, Hailin</creatorcontrib><creatorcontrib>Xu, Honghui</creatorcontrib><creatorcontrib>Tang, Chengying</creatorcontrib><title>Experimental identification of the degenerated equilibrium and thermodynamic modeling in the Al–Nb system</title><title>Journal of alloys and compounds</title><description>In order to ascertain the reaction type for the degenerated equilibrium among liquid, (Al) and NbAl
3, differential scanning calorimetry (DSC) measurements with heating and cooling rates of 2, 5 and 10
K/min are performed for the annealed pure Al and Al
0.97Nb
0.03 (atomic fraction) samples. The degenerated equilibrium is identified to be a peritectic one by extrapolating the heating rates to 0
K/min. A set of self-consistent thermodynamic parameters for the Al–Nb system is then obtained by means of the calculation of phase diagram (CALPHAD) approach applied to the experimental phase diagram and thermodynamic data from the literature and the present work. The calculated phase diagram and thermodynamic properties agree well with the corresponding experimental ones. The unusual feature associated with the previous modeling (
i.e., the appearance of ordered Bcc_B2 phase at low temperatures) is avoided in the present modeling.</description><subject>Al–Nb phase diagram</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Differential scanning calorimetry</subject><subject>Exact sciences and technology</subject><subject>High-temperature alloys</subject><subject>Materials science</subject><subject>Phase diagrams and microstructures developed by solidification and solid-solid phase transformations</subject><subject>Phase diagrams of metals and alloys</subject><subject>Physics</subject><subject>Thermodynamic modeling</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkMFu1DAQhi1UJJbCIyD5Qm9JJ3HiOKeqqlpAqsoFzpZjj8ssjrO1s6h76zvwhjwJ2e6q157-keb_59d8jH2qoKygkufrcm1CsNNY1gBdCbIEId6wVaU6UTRS9idsBX3dFkoo9Y69z3kNAFUvqhX7ff24wUQjxtkETm5R8mTNTFPkk-fzL-QO7zFiMjM6jg9bCjQk2o7cRLffp3Fyu2hGsnyZMFC85xSfk5fh39Pfu4HnXZ5x_MDeehMyfjzqKft5c_3j6mtx-_3Lt6vL28KKDuZiQNtZL5UYvGpl45XqZQON81XbOQODbJ20rTB9PzQea-i98rL2TtVQd0Y4ccrODnc3aXrYYp71SNliCCbitM1aCAm1lHIxtgejTVPOCb3eLChM2ukK9B6tXusjWr1Hq0HqBe2S-3wsMNma4JOJlvJLuIZGNLJvF9_FwYfLt38Ik86WMFp0lNDO2k30StN_tfmVHg</recordid><startdate>20080728</startdate><enddate>20080728</enddate><creator>Zhu, Zhijun</creator><creator>Du, Yong</creator><creator>Zhang, Lijun</creator><creator>Chen, Hailin</creator><creator>Xu, Honghui</creator><creator>Tang, Chengying</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20080728</creationdate><title>Experimental identification of the degenerated equilibrium and thermodynamic modeling in the Al–Nb system</title><author>Zhu, Zhijun ; Du, Yong ; Zhang, Lijun ; Chen, Hailin ; Xu, Honghui ; Tang, Chengying</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-bec7cf683bf8564f8896404df157da0b65d6c53a99b4fe209f8f62fd82027a3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Al–Nb phase diagram</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Differential scanning calorimetry</topic><topic>Exact sciences and technology</topic><topic>High-temperature alloys</topic><topic>Materials science</topic><topic>Phase diagrams and microstructures developed by solidification and solid-solid phase transformations</topic><topic>Phase diagrams of metals and alloys</topic><topic>Physics</topic><topic>Thermodynamic modeling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhu, Zhijun</creatorcontrib><creatorcontrib>Du, Yong</creatorcontrib><creatorcontrib>Zhang, Lijun</creatorcontrib><creatorcontrib>Chen, Hailin</creatorcontrib><creatorcontrib>Xu, Honghui</creatorcontrib><creatorcontrib>Tang, Chengying</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhu, Zhijun</au><au>Du, Yong</au><au>Zhang, Lijun</au><au>Chen, Hailin</au><au>Xu, Honghui</au><au>Tang, Chengying</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental identification of the degenerated equilibrium and thermodynamic modeling in the Al–Nb system</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2008-07-28</date><risdate>2008</risdate><volume>460</volume><issue>1</issue><spage>632</spage><epage>638</epage><pages>632-638</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>In order to ascertain the reaction type for the degenerated equilibrium among liquid, (Al) and NbAl
3, differential scanning calorimetry (DSC) measurements with heating and cooling rates of 2, 5 and 10
K/min are performed for the annealed pure Al and Al
0.97Nb
0.03 (atomic fraction) samples. The degenerated equilibrium is identified to be a peritectic one by extrapolating the heating rates to 0
K/min. A set of self-consistent thermodynamic parameters for the Al–Nb system is then obtained by means of the calculation of phase diagram (CALPHAD) approach applied to the experimental phase diagram and thermodynamic data from the literature and the present work. The calculated phase diagram and thermodynamic properties agree well with the corresponding experimental ones. The unusual feature associated with the previous modeling (
i.e., the appearance of ordered Bcc_B2 phase at low temperatures) is avoided in the present modeling.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2007.06.033</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of alloys and compounds, 2008-07, Vol.460 (1), p.632-638 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Al–Nb phase diagram Cross-disciplinary physics: materials science rheology Differential scanning calorimetry Exact sciences and technology High-temperature alloys Materials science Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Phase diagrams of metals and alloys Physics Thermodynamic modeling |
| title | Experimental identification of the degenerated equilibrium and thermodynamic modeling in the Al–Nb system |
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