研究目的
Investigating the effects of wire feed speed, beam offset, and welding speed on weld shape, interfacial microstructures, and tensile strength of butt joints between 5052 aluminum alloy and Q235 low carbon steel using a hybrid laser-CMT arc welding-brazing method.
研究成果
The hybrid laser-CMT arc welding-brazing method effectively improved the weld shape and interfacial reaction inhomogeneity in butt joints between 5052 aluminum alloy and Q235 low carbon steel. The interfacial IMCs layer, consisting of Fe2Al5 and Fe4Al13, was controlled to a thickness of 3-5 μm. The weld seam microstructure was composed of α-Al and Al3Mg2. The tensile strength of the joints was influenced by the processing parameters, with the highest strength reaching 83.4 MPa. The joint fractures occurred in the interfacial IMCs layer, which was identified as the weak zone of the joint.
研究不足
The study focused on the effects of wire feed speed, beam offset, and welding speed on the weld quality and mechanical properties of the joints. However, other factors such as the influence of different filler metals or base metal thicknesses were not explored. Additionally, the study was limited to butt joint configurations, and the applicability of the method to other joint types was not investigated.
