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  Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb

He, C., Stein, F., & Palm, M. (2015). Thermodynamic description of the systems Co–Nb, Al–Nb and Co–Al–Nb. Journal of Alloys and Compounds, 637, 361-375. doi:10.1016/j.jallcom.2015.02.182.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-12EB-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-12F0-C
Genre: Journal Article

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 Creators:
He, Cuiyun1, Author              
Stein, Frank2, Author              
Palm, Martin2, Author              
Affiliations:
1College of Materials Science and Engineering, Guangxi University, Nanning 530005, China, ou_persistent13              
2Intermetallic Materials, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863400              

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Free keywords: Al-Nb system; Co-Al-Nb system; Co-Nb system; Laves phase; Thermodynamic assessment
 Abstract: The Co–Al–Nb ternary system and its two binary subsystems Co–Nb and Al–Nb were thermodynamically modeled by the Calphad method based on own experimental results and critically assessed literature data. A characteristic of the Co–Nb and Co–Al–Nb system is the coexistence of three polytypes of Laves phases: hexagonal C14 and C36 as well as cubic C15. Two-sublattice models were used for the three Laves phases to enable a realistic description of their homogeneity ranges in the Co–Nb and Co–Al–Nb system. A re-assessment was needed for the Al–Nb system to obtain a better description of the homogeneity range of Nb2Al and the liquidus projection of the Co–Al–Nb system. The comparison between calculated and experimental values shows that the optimized set of thermodynamic parameters gives a very good description of most of the experimental data resulting in a complete, consistent thermodynamic description of the three systems Co–Nb, Al–Nb and Co–Al–Nb.

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Language(s): eng - English
 Dates: 2015-07-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.jallcom.2015.02.182
 Degree: -

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Title: Journal of Alloys and Compounds
  Abbreviation : J. Alloy. Comp.
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier B.V.
Pages: - Volume / Issue: 637 Sequence Number: - Start / End Page: 361 - 375 Identifier: ISSN: 0925-8388
CoNE: https://pure.mpg.de/cone/journals/resource/954925567746