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Orientador(es)
Resumo(s)
A large number of aluminium-copper explosive welds were produced under different welding conditions to perform a broad analysis of the weldability of this combination. The influence of the explosive mixture and the relative positioning of the plates on the welding results were analysed. When the aluminium alloy is positioned as the flyer plate, continuous interfacial melting occurred under the low values of energy lost by the collision, and collision point velocity. This proved that the weldability of the aluminium-copper combination is higher when the copper is positioned as the flyer. A mismatch between the experimental results and the existing theories that define the requirements for achieving consistent welds was noticed. Especially for welds produced using the aluminium alloy as the flyer, the experiments proved to be more restrictive than the theories. These theories, despite being widely applied in dissimilar welding literature, present several limitations concerning aluminium-copper welding. New approaches considering the formation of intermetallic phases at the interface, the properties of both welded metals, and/or the difference in their properties should be developed.
Descrição
Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2017 do Instituto Politécnico de Lisboa. Código de referência IPL/2017/EWDMat/ISEL
Palavras-chave
Explosive welding Aluminium Copper Intermetallic phases Solid-state welding Kinetic energy
Contexto Educativo
Citação
CARVALHO, G. H. S. F. L.; [et al] – Weldability of aluminium-copper in explosive welding. International Journal of Advanced Manufacturing Technology. ISSN 1433-3015. Vol. 103, N.º 5-8 (2019), pp. 3211-3221
Editora
Springer