On the modelling of joint formation in dissolutive brazing processes

Autor(es)

Vynnycky, M. ^{[1, 2]} ; Lacaze, J. ^[3]

Afiliação do(s) autor(es)

^[1] Royal Inst Technol, Dept Mat Sci & Engn, Div Proc, Brinellvagen 23, S-10044 Stockholm - Sweden

^[2] Univ Limerick, Dept Math & Stat, Limerick V94 T9PX - Ireland

^[3] Univ Toulouse, CIRIMAT, 4 Allee Emile Monso CS44362, F-31030 Toulouse 4 - France

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENGINEERING MATHEMATICS; v. 116, n. 1, p. 73-99, JUN 2019.
• Citações Web of Science: 0

Resumo

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. (AU)

• Processo FAPESP: 18/07643-8 - Matemática industrial e técnicas assintóticas
• Beneficiário: José Alberto Cuminato
• Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional