New approach to the compound energy formalism (NACEF) Part II. Thermodynamic modelling of the Al-Nb system supported by first-principles calculations (2023)
- Authors:
- USP affiliated authors: COELHO, GILBERTO CARVALHO - EEL ; NUNES, CARLOS ANGELO - EEL
- Unidade: EEL
- DOI: 10.1016/j.calphad.2022.102522
- Subjects: TERMODINÂMICA; TERMODINÂMICA (FÍSICO-QUÍMICA)
- Keywords: Thermodynamic modelling; Al–Nb; CALPHAD; New approach to the compound energy formalism (NACEF); Ab initio calculations σ phase
- Language: Inglês
- Abstract: In the present work, a new assessment of the Al–Nb system, using a combined first-principle and CALPHAD approach, is presented. Formation enthalpies of all ordered configurations of the intermetallic phases (σ, D022 and A15) were estimated from ab initio calculations. The liquid, fcc and bcc phases are described by a substitutional solution model. The intermetallic phases D022 and A15 are described with the New Approach to the Compound Energy Formalism (NACEF). To model the σ phase, four descriptions are applied. In first, σ phase is described with the five-sublattice (5SL) model using combined CEF model where a modification was applied which allows to respect the formation enthalpies of end-members obtained from ab initio calculations. Then, a comparison with the results obtained using the NACEF approach applied to the five-sublattice (5SL), three-sublattice (3SL) and two-sublattice (2SL) models is presented. In all cases, assessments derived from the different descriptions of σ phase show very good agreement with the available experimental and ab initio data with a limited number of used parameters. In this sense, self-consistent thermodynamic descriptions of the Al–Nb system is provided. Moreover, this work shows from the example of the σ phase that the NACEF approach, contrary to what is commonly considered, allows the compatibility between different descriptions using different numbers of sublattices. This is particularly interesting for the construction of multi-component databases.
- Imprenta:
- Publisher: Elsevier
- Publisher place: Pensilvânia-USA
- Date published: 2023
- Source:
- Título do periódico: Calphad-computer coupling of phase diagrams and thermochemistry
- ISSN: 0364-5916
- Volume/Número/Paginação/Ano: v.80, n. , p.1-14, art. 102522, 2023
- Este periódico é de assinatura
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: green
- Licença: other-oa
-
ABNT
FIORANI, Jean Marc et al. New approach to the compound energy formalism (NACEF) Part II. Thermodynamic modelling of the Al-Nb system supported by first-principles calculations. Calphad-computer coupling of phase diagrams and thermochemistry, v. 80, n. , p. 1-14, 2023Tradução . . Disponível em: https://doi.org/10.1016/j.calphad.2022.102522. Acesso em: 28 abr. 2024. -
APA
Fiorani, J. M., Badran, M., Joubert, J. -M., Crivello, J. C., Silva, A. A. A. P., Coelho, G. C., et al. (2023). New approach to the compound energy formalism (NACEF) Part II. Thermodynamic modelling of the Al-Nb system supported by first-principles calculations. Calphad-computer coupling of phase diagrams and thermochemistry, 80( ), 1-14. doi:10.1016/j.calphad.2022.102522 -
NLM
Fiorani JM, Badran M, Joubert J-M, Crivello JC, Silva AAAP, Coelho GC, Nunes CA, David N, Vilasi M. New approach to the compound energy formalism (NACEF) Part II. Thermodynamic modelling of the Al-Nb system supported by first-principles calculations [Internet]. Calphad-computer coupling of phase diagrams and thermochemistry. 2023 ;80( ): 1-14.[citado 2024 abr. 28 ] Available from: https://doi.org/10.1016/j.calphad.2022.102522 -
Vancouver
Fiorani JM, Badran M, Joubert J-M, Crivello JC, Silva AAAP, Coelho GC, Nunes CA, David N, Vilasi M. New approach to the compound energy formalism (NACEF) Part II. Thermodynamic modelling of the Al-Nb system supported by first-principles calculations [Internet]. Calphad-computer coupling of phase diagrams and thermochemistry. 2023 ;80( ): 1-14.[citado 2024 abr. 28 ] Available from: https://doi.org/10.1016/j.calphad.2022.102522 - Experimental Study of the Cr-Hf-Nb System: Liquidus Projection and 1200 °C Isothermal Section
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Informações sobre o DOI: 10.1016/j.calphad.2022.102522 (Fonte: oaDOI API)
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