Effect of beam oscillation on intermetallic compounds and mechanical properties of steel/aluminum laser welded joint

Li, Tian; Zhou, Dawei; Yan, Youruiling; Liu, Jinshui

doi:10.1016/j.jmapro.2021.10.066

Cited by 12 publications

(2 citation statements)

References 23 publications

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“…The thickness of the IMCs in both cases with the laser power range from 1500 to 1900 W is shown in Table 4. Due to an elevated temperature, an intensified diffusion reaction occurred at the interface, which led to an increase in intermetallic compound thickness with the rise in laser power [33]. The intermetallic compound thickness in the joint of Al/coated steel was larger as compared to the joint of Al/uncoated steel (7.1 µm vs. 1.5 µm) at 1500 W. This was because the interfacial metallurgical reactions were relatively weak at low laser power, only generating a 1.5 µm thick IMC layer which was much thinner than the pre-existed 7 µm thick Fe 2 Al 7 Si layer within the Al-Si coating.…”

Section: Macroscopic Morphology and Interfacial Microstructurementioning

confidence: 99%

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: 99%

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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“…Due to its low density and high strength, aluminium alloys are increasingly being used alongside steel in the production of bodywork [3]. However, the fusion welding method traditionally used in the automotive industry has several problems when welding aluminium and steel, such as porosity defects and poor metallurgical compatibility [4].…”

Section: Introductionmentioning

confidence: 99%

Study on the microstructure and failure mechanisms for flat resistance element welding-bonding aluminium alloy/Q235 steel joints

Fei

Zhao

Zhang

et al. 2022

Science and Technology of Welding and Joining

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A novel method called flat resistance element welding-bonding (FREWB) is proposed to join aluminium alloy to Q235 steel. The microstructure and mechanical performance of FREWB and flat resistance element welding (FREW) were investigated. The microstructure of the nugget was lath martensite. The heat-affected zone of the rivet could be divided into two zones according to the microstructure: the upper-critical heat-affected zone (UCHAZ) and the inter-critical heat-affected zone (ICHAZ). The microstructure of UCHAZ consists of martensite, and the microstructure of ICHAZ consists of martensite and ferrite. The failure mechanisms of the FREW and FREWB joints were analysed. Moreover, an analytical model was established to predict the variation of critical nugget sizes, which provided a relatively good prediction.

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Improvement of Mg/steel dissimilar laser welded joint properties produced by beam oscillation

Zhou

et al. 2023

Optik

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Effect of beam oscillation on intermetallic compounds and mechanical properties of steel/aluminum laser welded joint

Cited by 12 publications

References 23 publications

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

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

Study on the microstructure and failure mechanisms for flat resistance element welding-bonding aluminium alloy/Q235 steel joints

Improvement of Mg/steel dissimilar laser welded joint properties produced by beam oscillation

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