A Study on the Interface Microstructure of Diffusion Bonded AISI410/SU718 Dissimilar Joints

摘要

Solid state diffusion bonding (DB) between Inconel 718 and 410 Martensitic stainless steels were done by changing bonding temperature from 900 to 1000°C in steps of 50°C with a consistent pressure of 16 MPa and holding time of 60 minutes. Optical microscopy and scanning electron microscopy (SEM) were utilized to inspect the pain growth and the chemical species of the inter- face structure. The thickness of reaction layer in interfaces was enhanced with growing bonding temperature. Room-temperature properties of the bonded joints were characterized using micro hardness evaluation.