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Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys

Lacaze, Jacques and Jacques, Bruno and Mazet, Thierry and Vynnycky, Michael Numerical Simulation of Brazing Aluminium Alloys with Al–Si Alloys. (2018) Transactions of the Indian Institute of Metals, 71 (11). 2623-2629. ISSN 0972-2815

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Official URL: https://doi.org/10.1007/s12666-018-1415-8

Abstract

Joining parts using low-melting temperature alloys has long been used for manufacturing complex components such as heat exchangers made of aluminium alloys. Investigations of the process have shown that core/ clad interaction during heating and brazing can lead to a significant decrease in the amount of liquid available for joint formation. This study presents a transient one-dimensional model for the process that takes into account the diffusion of silicon and the movement of the core/clad interface, with the model equations being implemented in the finite element software COMSOL Multiphysics; the results are compared to literature experimental data. Silicon profiles in the core are well described, while there appears a significant difference between predicted and experimental values of remaining clads which suggest a strong effect of silicon diffusion and liquid penetration at core grain boundaries.

Item Type:Article
HAL Id:hal-01994074
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Royal Institute of Technology – KTH (SWEDEN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Fives Cryo (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:25 Jan 2019 10:47

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