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On the modelling of joint formation in dissolutive brazing processes

Vynnycky, Michael and Lacaze, Jacques On the modelling of joint formation in dissolutive brazing processes. (2019) Journal of Engineering Mathematics, 116 (1). 73-99. ISSN 0022-0833

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Official URL: https://doi.org/10.1007/s10665-019-10003-z

Abstract

In this paper, earlier dissolutive wetting models describing the dynamics of an axisymmetric alloy drop spreading on pure metal substrate are extended to describe reactive wetting and subsequent joint formation in brazing processes. A two-dimensional time-dependent problem is formulated, and the model equations are nondimensionalized, revealing the possibilities for asymptotic model reduction. Whilst the numerical solution of the time-dependent problem, which contains two moving contact lines and would not in general be amenable to lubrication theory, is relegated to future work, the steady-state problem is analyzed in detail. The analysis offers an arguably more transparent alternative to an earlier energy minimization approach for finding the location of the meniscus, which ultimately constitutes the joint. The results of the present model are found to compare favourably to those of earlier experimental and theoretical work.

Item Type:Article
HAL Id:hal-02458184
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 - Toulouse INP (FRANCE)
Other partners > Royal Institute of Technology – KTH (SWEDEN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > University of Limerick - UL (IRELAND)
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Deposited On:28 Jan 2020 14:24

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