Abstract
The evolution of microstructure in the MB8/2024 dissimilar alloy joints by using Al/Zn/Cu/Zn multi- interlayers via ultrasonic-assisted brazing was investigated. The results show that the addition of aluminum foil on the MB8 side realized the transformation of Al3Mg2 binary intermetallic compounds (IMCs) to AlMg4Zn11 ternary IMCs along the interface between copper foil and MB8 magnesium alloys. This transformation reinforced the joints and then the shear strength reached a maximum at 22 s (85.26 MPa). Thermodynamic analysis shows that ΔGMg,Al,Zn of AlMg4Zn11 (–38.65 kJ/mol) was smaller than that of Al3Mg2 (–31.94 kJ/mol), which provided a basis for the IMC transformation. Mg32(Al,Zn)49 quasicrystal was found for the first time using ultrasonic-assisted brazing due to the cavitation effect.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore 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.
