Abstract
The dissolution behavior of base metal Cu in the Cu-Ag and Cu-P brazing alloys using weld brazing was researched. The thickness loss of Cu foil in contact with Cu-P and Cu-Ag alloys at 800–920°C was measured. And the dissolution rate constants in both alloys were calculated as the following relation: k Cu-P( T)=10 k Cu-Ag( T), which explains the special phenomenon that the dissolving amount of copper in Cu-P liquid alloys is larger than that in Cu-Ag alloys under the same condition. As weld brazing has its own characteristics of short reaction time and quick temperature variation in one thermal cycle, the quick dissolution rate of copper in filler metals is the main reason to achieve weld brazing. It can be concluded that element P is indispensable in filler metals compared with element Ag as the function of accelerating dissolution during weld brazing. Finally, the influences of the addition of alloy element on mechanical performance of the welding joints were studied and the design principles of filler metals for weld brazing were proposed to achieve good mechanical performance.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Transactions of Nonferrous Metals Society of China
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.