Fluxless Brazing of Al6061 Alloys Using Ag-28Cu Insert
A diffusion brazing of aluminium alloy A6061 was preformed using a Ag-28Cu insert to conduct eutectic brazing. Interface behaviors of the brazed joints were observed after brazing at 450-560°C. The tensile property of the brazed joints was also examined. During diffusion brazing of Al6061 alloys with Ag-28Cu insert, eutectic melts were formed by eutectic reaction between Al6061 and Ag-28Cu insert. It was found that the reaction layers composed of two phases were formed at the interface between Al6061 and Ag-28Cu insert. EPMA analysis revealed that two phases in the reaction layers consist of Ag-rich phase and Cu-rich phase. The tensile strength of the joints brazed at 560°C for 30min was 160 MPa.
Hyung Sun Kim, Sang-Yeop Park, Bo Young Hur and Soo Wohn Lee
Y. S. Lee et al., "Fluxless Brazing of Al6061 Alloys Using Ag-28Cu Insert", Materials Science Forum, Vols. 486-487, pp. 173-176, 2005