Microstructure Evolution in an Aluminum Cladded Sheet during Vacuum Brazing

Abstract : Microstructure evolution of a 3003 sheet cladded with 4004 brazing alloy is investigated during slow heating (1K/min) under secondary vacuum up to isothermal brazing temperature (590°C). Optical and scanning microscopies, EDS chemical analysis and EBSD orientation mapping are used. Experimental results are discussed in the light of thermodynamic calculations using Thermo-Calc. Comparisons show good agreement as long as Mg vaporization does not take place.
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Cécile Bernardi, Alain Hazotte, Nathalie Siredey-Schwaller, Thierry Mazet, Jacques Lacaze. Microstructure Evolution in an Aluminum Cladded Sheet during Vacuum Brazing. Materials Science Forum, Trans Tech Publications Inc., 2014, 790-791, pp. 355-360. ⟨10.4028/www.scientific.net/MSF.790-791.355⟩. ⟨hal-01167219⟩

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