Formation of the microstructure and transition zone in diffusion welding of steel 45 through a powder layer

Abstract

Investigations were carried out into the microstructure and properties of diffusion-welded joints produced through a submicron nickel powder layer deposited on the metallic coating at welding temperatures of (0.4–0.7) T_m. The results show that using the submicron powder as an activating layer produces high quality diffusion-welded joints at 850 °C, which is equal to 0.6T_m.

Keywords:

• Diffusion welding
• submicron powders
• sintering
• microstructure
• transition zone

Notes

Selected from Svarochnoe Proizvodstvo, 2015, 68 (9) 18–21