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Gómez Vázquez, R., Otto, A., Liedl, G., & Feichtenschlager, R. (2015). Simulation of Laser Welding of Dissimilar Metals. In Lasers in Manufacturing 2015 (p. 8). http://hdl.handle.net/20.500.12708/67224
One of the most challenging problems in welding of dissimilar metals is the formation of intermetallic phases at the joining interface. In this paper we introduce a simulation model aimed to support the study of laser dissimilar welding by providing useful information on the process characteristics (e.g. thermal distribution, species mixing) including intermetallics formation. The introduced model...
One of the most challenging problems in welding of dissimilar metals is the formation of intermetallic phases at the joining interface. In this paper we introduce a simulation model aimed to support the study of laser dissimilar welding by providing useful information on the process characteristics (e.g. thermal distribution, species mixing) including intermetallics formation. The introduced model is based on our existing multi-physical solver for simulation of laser processes within OpenFOAM's environment. Simulation capabilities have been extended by the implementation of physics describing the behaviour of dissimilar metals during laser welding. Multi-species diffusion and a simplified growth model for the intermetallic layer were included. Implemented diffusion includes temperature dependency and allows simultaneous mixing of different species. The formation of intermetallic phases is calculated by a species reaction model coupled with both species and energy transport models. The thickness of the intermetallic layer predicted by the simulations is finally compared with experimental data for aluminum and steel.
