Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/61043
Título: | Ultrasonic vibration as a primary mixing tool in accelerating aluminum–copper alloys preparation from their pure elements |
Autor(es): | Muhrat, Abdulsalam Puga, Hélder Barbosa, J. |
Palavras-chave: | ultrasonic vibration aluminum alloy impurities porosity grain refining sonotrode erosion stirring |
Data: | 12-Jul-2019 |
Editora: | Multidisciplinary Digital Publishing Institute |
Revista: | Metals |
Resumo(s): | In this study, ultrasonic vibration (USV) was evaluated in preparation of Al–8wt.%Cu alloys at a lab-scale. Moreover, the role of Ti–6Al–4V sonotrode erosion and its contribution in grain refining were analyzed. Based on the experimental conditions/parameters, it was found that the amount of impurities and the associated porosity were significantly reduced in USV treated alloys. Furthermore, USV reduced the time needed for dissolving the alloying element Cu, nevertheless, the best dissolving of Cu in this study was not possible without introducing further holding time. As a result of using a titanium-based sonotrode, a noticeable content of Ti was found in the ultrasonically treated alloys due to sonotrode erosion under USV. The dispersion of TiAl<sub>3</sub> promoted, as a main factor, a grain refining effect at relatively constant and high melt temperature, other possible mechanisms of grain refining have been discussed. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/61043 |
DOI: | 10.3390/met9070781 |
ISSN: | 2075-4701 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CMEMS - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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metals-09-00781.pdf | 15,5 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons