Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/34523
Título: | Effects of substituting ytterbium for scandium on the microstructure and age-hardening behaviour of Al–Sc alloy |
Autor(es): | Tuan, N. Q. Pinto, A. M. P. Puga, Hélder Rocha, L. A. Barbosa, J. |
Palavras-chave: | Aluminium–scandium alloys Ytterbium Age-hardening Precipitate coarsening TEM High-resolution TEM |
Data: | 2014 |
Editora: | Elsevier 1 |
Revista: | Materials Science & Engineering: A |
Resumo(s): | In order to reduce the cost of Al–Sc alloys and maintain their mechanical properties, the microstructure and mechanical properties of Al–0.24 wt% Sc–0.07 wt% Yb in comparison with Al–0.28 wt% Sc alloys were studied. The aging behaviour, precipitate morphologies, precipitate coarsening and precipitation hardening of both alloys were investigated. The average diameter and the size distribution of nanoscale Al3Sc and Al3(Sc,Yb) precipitates at various aging conditions were measured. Transmission electron microscopy (TEM) and high-resolution TEM were used to deeply understand the precipitate evolution. A maximum hardness around 73 (HV30) was obtained with a precipitate diameter from 4.3 to 5.6 nm for both alloys. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/34523 |
DOI: | 10.1016/j.msea.2014.02.042 |
ISSN: | 0921-5093 |
Versão da editora: | www.elsevier.com/locate/msea |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CIICS - Artigos em revistas de circulação internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2014 - Effects of substituting ytterbium for scandium on the microstructure and age-hardening behaviour of Al–Sc alloy.pdf | 2,82 MB | Adobe PDF | Ver/Abrir |