Microstructure and mechanical properties of induction rolling welded joint for A283GRC steel and 5052 aluminum alloy

Gao, Kai; Gu, Hongzhou; Gong, Junbo; Li, Kun; Dai, Xiangyu; Yang, Kai

doi:10.1016/j.jmatprotec.2023.118016

Cited by 4 publications

(1 citation statement)

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“…At the low laser power of 1500 W, the reaction layer was very thin and discontinuous, and the edge of the reaction layer close to the steel base metal was relatively straight, while it was uneven near the FZ. This indicates that the reaction layer has grown from the steel side towards the FZ [26]. According to the EDS analysis in Table 3, the chemical composition was 0.82 at.…”

Section: Macroscopic Morphology and Interfacial Microstructurementioning

confidence: 92%

Effect of Al-Si Coating on the Interfacial Microstructure and Corrosion Resistance of Dissimilar Laser Al Alloy/22MnB5 Steel Joints

Wu,

Oliveira,

Yang

et al. 2024

Metals

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This investigation employed different laser powers to conduct the laser welding–brazing process of 5052 aluminum alloy to both Al-Si coated and uncoated 22MnB5 steel. The flux-cored Zn-Al22 filler metal was employed during the procedure. The influence of Al-Si coatings on the microstructure and corrosion resistance of Al/Steel welded joints was investigated using microstructural characterization and electrochemical tests. It was noted that the interfacial microstructure of the laser Al/steel joints was significantly altered by the Al-Si coating. Moreover, the Al-Si coating suppressed the formation and growth of the interfacial reaction layer. Electrochemical corrosion tests showed that the impact of Al-Si coating on the corrosion resistance of laser joints depended on the laser powers and thickness of the interfacial intermetallic compound (IMC) layer. The research suggests that galvanic corrosion occurs due to the differences in corrosion potential between fusion zone (FZ), steel, and Fe-Al-Zn IMCs, which accelerate the corrosion of the joint. The IMC layer acts as a cathode to accelerate the corrosion of the FZ and as an anode to protect the steel from corrosion.

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Section: Macroscopic Morphology and Interfacial Microstructurementioning

confidence: 92%