Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 128, Issue 7-8, Pages 2971-2982Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-023-12129-y
Keywords
Friction stir welding; Dissimilar joints; Intermetallic compounds; Interface; Mechanical properties
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In order to fabricate high-performance dissimilar joints of Al and Cu, it is critical to inhibit the growth of brittle intermetallic compounds (IMCs) at the interface. Therefore, submerged friction stir welding (SFSW) technology was used to join the Al/Cu dissimilar materials. The results revealed that the SFSW with water cooling significantly reduced the thickness of interfacial IMCs layer, and finer grains were formed at the Al side in nugget zone of SFSW joint compared to conventional friction stir welding (FSW). The mechanical properties of the joints produced by SFSW were improved. The tensile strength of the SFSW joint reached 221.5 MPa, which was 24.02% higher than that of the FSW joint. In addition, the SFSW could change the fracture position of joints, resulting in the fracture in the Al matrix.
In order to fabricate high-performance dissimilar joints of Al and Cu, it is critical to inhibit the growth of brittle intermetallic compounds (IMCs) at the interface. Therefore, submerged friction stir welding (SFSW) technology was used to join the Al/Cu dissimilar materials. The results revealed that the SFSW with water cooling significantly reduced the thickness of interfacial IMCs layer, and finer grains were formed at the Al side in nugget zone of SFSW joint compared to conventional friction stir welding (FSW). The mechanical properties of the joints produced by SFSW were improved. The tensile strength of the SFSW joint reached 221.5 MPa, which was 24.02% higher than that of the FSW joint. In addition, the SFSW could change the fracture position of joints, resulting in the fracture in the Al matrix.
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