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Abstract
55% SiCp/ZL102 composite was vacuum brazed utilizing Al77Cu20Ti3 filler. Shear testing was used to investigate the mechanical properties of the joints while SEM, EDS, and XRD were used to analyze the microstructure of the joints and the Al77Cu20Ti3 filler. ABAQUS software was used to examine the brazing process's heat transmission mechanism. Thermodynamics was used to describe how compounds develop at the junction. The findings indicate that the Al77Cu20Ti3 filler alloy's grain size was refined. The filler's solidus and liquidus dropped to 527.13 ℃ and 565.04 ℃, from 540.33 ℃ and 580.07 ℃, respectively. The joint's interface was dense, and its maximum shear strength of 75.38MPa was achieved when vacuum brazed at 590 °C for 30minutes. In the weld, ternary compounds of Ti, Al, and Si were mostly produced. The simulation indicated that throughout the heating process, heat was radiated to the workpiece's surface. First, SiC particles with better thermal conductivity saw a rise in temperature. Lastly, internal heat conduction kept the workpiece's total temperature constant. The base materials conducted heat to the filler, distributing the temperature differential in a circular pattern.
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