Research Progress and Prospects on the Effects of Interlayers on Al/Mg Bimetal
Author of the article: LI Guangyu1,2，3, ZENG Qiantong1, WANG Yuejia1, JIANG Wenming4, WANG Jun2, KANG Xing1, WANGXiaoqion
Author's Workplace：1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; 2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China; 3. Ningbo Institute of Dalian University of Technology, Ningbo 315000, China; 4. State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Key Words：Al/Mg bimetals; interface regulation; interlayer; research progress; prospect
Abstract：
Al/Mg bimetallic materials combine the performance advantages of aluminium and magnesium alloys, but brittle
intermetallic compounds are prone to form at the interface, adversely affecting joint performance. As an interface regulation
strategy, interlayers can effectively block direct reactions between Al and Mg, optimize interfacial microstructures, and
enhance bonding properties. This paper reviews the effects of different types of interlayers, including low-melting-point
metals, high-melting-point metals, multielement alloys, and high-entropy alloys, on the Al/Mg bimetallic interface during
processes such as compound casting and welding. The mechanisms of various interlayers and their influence on the
interface performance are summarized, and the future development directions of high-performance interlayer materials are
also discussed.
