銀系ろうによるチタン合金のろう付に関する研究

抄録

This paper summarized the effect of brazing temperature and time on the joint properties of Ti-6Al-4V alloy brazed with Ag-5Al-0.5Mn filler metal. The brazing was performed in a resistance heating type vacuum furnace. The brazing temperatures and times were ranging from 1143 K to 1203 K and from 0 to 30 minites respectively. Microscopic, EPMA, and X-ray diffraction analysis were carried out to investigate the microstructure of the brazed joints. Tensile tests of brazed joints were performed on each brazing condition.
The obtained results were summarized as follows:
(1) Silver and aluminum diffused into the base metal and some types of intermetallic compounds were formed at the brazing interfaces. The thickness of reaction layer increased with increasing brazing temperature and brazing time.
(2) Brazing at 1173 K for 10 min gave the maximum tensile strength of brazed joint.