Multiphysics Simulation and Experimental Investigation of Aluminum Wettability on a Titanium Substrate for Laser Welding-Brazing Process
Article dans une revue avec comité de lecture
The control of metal wettability is a key-factor in the field of brazing or welding-brazing. The present paper deals with the numerical simulation of the whole phenomena occurring during the assembly of dissimilar alloys. The study is realized in the frame of potential applications for the aircraft industry, considering the case of the welding-brazing of aluminum Al5754 and quasi-pure titanium Ti40. The assembly configuration, presented here, is a simplification of the real experiment. We have reduced the three-dimensional overlap configuration to a bi-dimensional case. In the present case, an aluminum cylinder is fused onto a titanium substrate. The main physical phenomena which are considered here are: the heat transfers, the fluid flows with free boundaries and the mass transfer in terms of chemical species diffusion. The numerical problem is implemented with the commercial software Comsol Multiphysics™, by coupling heat equation, Navier-Stokes and continuity equations and the free boundary motion. The latter is treated with the Arbitrary Lagrangian Eulerian method, with a particular focus on the contact angle implementation. The comparison between numerical and experimental results shows a very satisfactory agreement in terms of droplet shape, thermal field and intermetallic layer thickness. The model validates our numerical approach.
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
Analysis and possible estimation of keyhole depths evolution, using laser operating parameters and material properties Article dans une revue avec comité de lectureFABBRO, Rémy; DAL, Morgan; PEYRE, Patrice; COSTE, Frédéric; SCHNEIDER, Matthieu; GUNENTHIRAM, V (Laser Institute of America, 2018)The authors propose an analysis of the effect of various operating parameters on the keyhole depth during laser welding. The authors have developed a model that uses the analysis of the thermal field obtained in 2D geometry, ...
Article dans une revue avec comité de lectureFERREIRA, Elise; DAL, Morgan; COLIN, Christophe; MARION, Guillaume; GORNY, Cyril; COURAPIED, Damien; GUY, Jason; PEYRE, Patrice (MDPI, 2020)The Laser Metal Deposition (LMD) process is an additive manufacturing method, which generates 3D structures through the interaction of a laser beam and a gas/powder stream. The stream diameter, surface density and focal ...
Transient dynamics and stability of keyhole at threshold in laser powder bed fusion regime investigated by finite element modeling Article dans une revue avec comité de lectureMAYI, Yaasin A.; DAL, Morgan; PEYRE, Patrice; BELLET, Michel; METTON, Charlotte; MORICONI, Clara; FABBRO, Remy (Laser Institute of America, 2021)A Finite element model is developed with a commercial code to investigate the keyhole dynamics and stability at keyhole threshold, a fusion regime characteristic to laser microwelding or to Laser Powder Bed Fusion. The ...
Erratum: “Transient dynamics and stability of keyhole at threshold in laser powder bed fusion regime investigated by finite element modeling” [J. Laser Appl. 33, 012024 (2021)] Article dans une revue avec comité de lectureMAYI, Yaasin A.; DAL, Morgan; PEYRE, Patrice; BELLET, Michel; METTON, Charlotte; MORICONI, Clara; FABBRO, Remy (Laser Institute of America, 2021)Correction
Analysis of laser–melt pool–powder bed interaction during the selective laser melting of a stainless steel Article dans une revue avec comité de lectureGUNENTHIRAM, Valérie; PEYRE, Patrice; SCHNEIDER, Matthieu; DAL, Morgan; COSTE, Frédéric; FABBRO, Rémy (Laser Institute of America, 2017)The laser powder bed fusion (LPBF) or powder-bed additive layer manufacturing process is now recognized as a high-potential manufacturing process for complex metallic parts. However, many technical issues are still to ...