Microstructure and Mechanical Properties of Ti-Based Amorphous Solder Vacuum Brazing Joint for Stainless Steel

This article uses Ti43Zr27Mo5Cu10Be15 amorphous brazing material to experiment with 20*17*1 mm 304 stainless steel and 316L stainless steel sheets at different heating temperatures and holding times. Using an optical microscope, x-ray diffraction, scanning electron microscope, Shear strength, and Vickers hardness, the microstructure, element distribution, diffusion, and mechanical properties of joints of 304 and 316L stainless steel brazed with amorphous alloy as filler metal were studied. The results indicate that the brazing seam (FZ) will be generated during the brazing process. β-Ti improves its mechanical properties, and the matrix at the center of the brazing seam is still an amorphous phase. However, due to the diffusion of elements, intermetallic compounds are generated in the brazing seam, resulting in poor joint formation and cracking. It provides a specific theoretical basis and experimental basis for the engineering application of stainless steel brazing or other structural material parts using Ti and Zr-based amorphous alloy as brazing material.