| Texto completo | |
| Autor(es): |
Santos, J. C. P.
[1]
;
Chaia, N.
[1]
;
Borowski, K. E.
[1]
;
Silva, A. A. A. P.
[2]
;
Barros, D. F.
[1]
;
Abreu, D. A.
[1]
;
Nunes, C. A.
[1]
;
Coelho, G. C.
[1]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, EEL, Estrada Municipal Campinho S-N, BR-12602810 Lorena, SP - Brazil
[2] Univ Fed Itajuba, IEM, UNIFEI, Ave BPS 1303, BR-37500903 Itajuba, MG - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION; v. 41, n. 2 APR 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
Phase equilibria in the Al-Nb-V system are important data for the design of innovative Al-containing refractory-high-entropy alloys, however issues still open in this system. In the present work, Al-Nb-V phase equilibria at 1200 degrees C were re-investigated via microstructural characterization of heat-treated alloys using scanning electron microscopy, x-ray spectroscopy (EDS) and x-ray diffractometry. Results confirmed the existence of the three-phase fields BCC + Nb3Al + Nb2Al and BCC + Nb2Al + NbAl3 and the absence of ternary compounds. The solubility of binary phases Nb3Al and Nb2Al into the ternary and the stability region of the BCC solid solution were improved while the solubility of Nb in V5Al8 was confirmed negligible. In addition, VAl3 + NbAl3 diffusion couple were produced, confirming the miscibility gap between these phases and indicating the existence of NbAl3 + VAl3 + BCC equilibrium instead of NbAl3 + VAl3 + V5Al8. (AU) | |
| Processo FAPESP: | 17/14853-6 - Modelagem termodinâmica e experimentos críticos no sistema Al-Nb-V |
| Beneficiário: | Gilberto Carvalho Coelho |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/13966-4 - Investigação experimental e modelagem termodinâmica do sistema Al-Nb-V |
| Beneficiário: | Júlio César Pereira dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 18/21145-0 - Estudo experimental da seção vertical NbAl3-VAl3 do sistema Al-Nb-V |
| Beneficiário: | Karoline Elerbrock Borowski |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |