Influence of the structure and phase composition of the bond interface on aluminium-copper lap welds strength
| Autor: | Ivan Galvão, Dulce Maria Rodrigues, Carlos Leitão, D. Verdera, D.G. Andrade |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Materials science Friction stir welding Intermetallic chemistry.chemical_element 02 engineering and technology Welding law.invention Tool geometry 020901 industrial engineering & automation Aluminium law General Materials Science Friction welding Composite material Alumínio Soldagem por fricção Bond strength Metallurgy 021001 nanoscience & nanotechnology Condensed Matter Physics Material flow chemistry 0210 nano-technology Surface finishing Geometria da ferramenta |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | The structure and phase composition of the bond interface of aluminium–copper lap welds produced by friction stir welding and tool-assisted friction welding were analysed. Microstructural analysis proved that no through-interface material flow took place in tool-assisted friction welding and that aluminium–copper joining resulted from the formation of a thin and continuous intermetallic layer at the lap interface. For the welds produced by friction stir welding, evidences of through-interface material flow were found, promoting mechanical interlocking of both base materials, at the lap interface, and formation of discontinuous intermetallic layers. Mechanical testing showed that the tool-assisted friction welds, with excellent surface finishing, had low strength, contrary to the friction stir welds, which displayed excellent bond strength. The comparison of the mechanical and microstructural results, for both weld types, pointed to the ineffectiveness of the continuous intermetallic layer in provi... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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