Interfacial Microstructure and Shear Behavior of the Copper/Q235 Steel/Copper Block Fabricated by Explosive Welding
Source abstract
Abstract
A copper/Q235 steel/copper composite block with excellent bonding interfaces was prepared by explosive welding which was a promising technique to fabricate laminates. The microstructure and mechanical properties of the interfaces were investigated via the tensile-shear test, optical microscope (OM), X-ray diffraction (XRD), scanning electron microscope (SEM), and electron back-scattered diffraction (EBSD). The results showed that the shear strength of the upper-interface and lower-interfaces of the welded copper/steel are higher than ~235 MPa and ~222 MPa, respectively. The specimens failed fully within the copper and not at the bonding interface. It was attributed to: (1) no cavities and cracks at the interface; (2) the interface formed a metallurgical bonding including numerous ultra-fine grains (UFGs) which can significantly improve the plastic deformation coordination at the interface and inhibit the generation of micro-cracks.
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Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Welding Techniques and Residual Stresses · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China
School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Scientific Research Foundation of Anhui Polytechnic University · Major Research Development Program of Wuhu · Open Research Found of Anhui Key Laboratory of High-performance Non-ferrous Metal Materials
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