Joints Properties of Aluminum Foams/Aluminum Plate by Transient Liquid Phase Bonding Process

Abstract:

Aluminum foams/aluminum plate was transient liquid phase diffusion bonded with Cu/Al/Cu composite interlayer, then the investigation on joint microstructure, element diffusion and joint strength was conducted at 565°C. The results showed that, there was a significant grain boundary penetration phenomenon near the interface and it was more seriously at the side of aluminum foams. The XRD results showed indicated that the main phases near the interface were α-Al, CuAl₂, AlCu, Al₄Cu₉, Al₂O₃. By EDS line scanning, it indicated that the diffusion behavior of elements was different at three regions, compared with the edge region, the interface of the central region was better and the depth of element diffusion is larger, at the pore region, the liquefaction of interlayer was not successfully and the morphology was lamellar. Mechanical properties test showed that the largest shear strength of joint was 4.61 MPa when the duration was 40 min. Key words: Aluminum foams; transient liquid phase bonding; microstructure; element diffusion; shear strength

• Periodical: Materials Science Forum (Volume 944)
• Pages: 593-599
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.944.593
• Online since: January 2019
• Authors: Ben Sheng Huang*, Xiong Wen, Xing Zhao, Guang Wen Li
• Keywords: Aluminum Foams, Element Diffusion, Microstructure, Shear Strength, Transient Liquid Phase Bonding

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