Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/70843
Título: | Joining of TiAl alloy using novel Ag-Cu sputtered coated Ti brazing filler |
Autor(es): | Simões, Sónia Soares, Ana Tavares, C. J. Guedes, A. |
Palavras-chave: | Brazing Tial alloys Microstructural characterization Electron microscopy Energy-dispersive X-ray spectroscopy |
Data: | 2019 |
Editora: | Cambridge University Press |
Revista: | Microscopy and Microanalysis |
Resumo(s): | The aim of this study is to evaluate the potential use of titanium foil coated with sputtered silver and copper films as a novel brazing filler for joining TiAl alloys. For this purpose, a detailed microstructural characterization of the resulting brazing interfaces was carried out. The development of brazing fillers that allow the joining of TiAl alloys without compromising the service temperature is a fruitful prospect. Brazing experiments were performed in a vacuum at 900, 950, and 980 degrees C, with a dwell time of 30 min. Microstructural characterization reveals that brazing joints can be obtained successfully at 950 and 980 degrees C. The interface consists of a large central region of alpha-Ti with an amount of Al and Ti-Ag compound and thin layers, mainly composed of intermetallic compounds, formed close to the base material. A novel brazing filler consisting of Ti foil coated with sputtered Ag and Cu films inhibits the extensive formation of soft (Ag) zones or coarse brittle Ti-Al-(Cu,Ni) particles. Hence, the need for post-brazing heat treatments for the joining of TiAl alloys was avoided. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/70843 |
DOI: | 10.1017/S1431927618015295 |
ISSN: | 1431-9276 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | DEM - Artigos em revistas de circulação internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Joining of TiAl alloy using novel Ag-Cu sputtered coated Ti brazing filler (2019).pdf Acesso restrito! | 235,19 kB | Adobe PDF | Ver/Abrir |