CMT welding-brazing of al/steel dissimilar materials using cycle-step mode

Peng, Mingjian; Liu, Hongbing; Liang, Ying Chun; Xu, Wenhu; Zhao, Yixuan; Chen, Shuhai; Weng, Jiarong; Yang, Jin

doi:10.1016/j.jmrt.2022.03.043

Cited by 21 publications

(8 citation statements)

References 29 publications

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“…[36]; [37]; [38]; [39]; [40]; [41]; [42]; [43]; [44]; [45] [149]; [150]; [151]; [152]; [153]; [154]; [155] Fig. 2 shows the data distribution related to welding techniques used in previous studies and arranged according to the research theme (Welding Technique, Optimization, and Material Treatment).…”

Section: Metals Combination Referencesmentioning

confidence: 99%

“…These studies revealed the presence of silicon in the IMC layer, resulting in the formation of Fe(Al, Si)3 or Fe-Al-Si. [19], [33], [40].…”

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

“…Decreased wettability of the weld pool leads to decreased wetting length and weakens the contact between the interfacial of dissimilar metal joints. Consequently, a weak contact interface adversely impacts the joint's strength [19], [40], [41].…”

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

“…Previous studies on arc welding techniques mostly used various analytical methods to analyze microstructures, such as Scanning Electron Microscopy (SEM) [19], [20], [83], [30], [33], [34], [37], [40], [41], [43], [80], Energy Dispersive X-ray Spectroscopy (EDS) [19], [20], [30], [33], [37], [40]- [42],…”

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

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Study on Intermetallic Compound (IMC) in Dissimilar Joining of Steel and Aluminum (Fe-Al) – A Review Paper

Rahman,

Mamat,

Ahmad

et al. 2023

Preprint

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Dissimilar metal joints, particularly those involving aluminum and iron (Al-Fe), are widely employed in engineering due to their exceptional mechanical properties and unique microstructures. The purpose of this literature review is to assess the extent and depth of research related to dissimilar metal joint research, with a specific focus on microstructure analysis and the reported findings. The review identified three key themes for improving the quality of these joints: welding techniques, parametric optimization, and material treatment. Three themes were identified, namely, the welding techniques (i.e., Friction Stir Welding, TIG-MIG Hybrid welding, etc.), parameter optimization (e.g., Taguchi method, Response Surface Method etc., and Material Treatment) and the material treatment (pre-heating, Backing Plate). This comprehensive review highlights the importance of microstructural analysis in Dissimilar Metal Joint research, providing a foundation for understanding the nuances of different welding methods and their effects on joint quality. Additionally, strategies to mitigate the challenges posed by thick Fe2Al5 formation are discussed, ultimately contributing to advancements in dissimilar material joint technology and joint strength enhancement.

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Section: Metals Combination Referencesmentioning

confidence: 99%

“…These studies revealed the presence of silicon in the IMC layer, resulting in the formation of Fe(Al, Si)3 or Fe-Al-Si. [19], [33], [40].…”

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

Section: Microstructure Analysis In Al-fe Dissimilar Jointsmentioning

confidence: 99%

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Study on Intermetallic Compound (IMC) in Dissimilar Joining of Steel and Aluminum (Fe-Al) – A Review Paper

Rahman,

Mamat,

Ahmad

et al. 2023

Preprint

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“…CMT technology (cold metal transfer), as an improved welding method based on short-circuit transfer, has the advantages of low heat input, low spatter, and small weld deformation. After a lot of experimental studies, scholars believed that the Al alloy/steel CMT welding-brazing joints had a good comprehensive performance when selecting an Al-Si welding wire as the filler metal [20,21]. However, the wettability and spreadability of the welding wire on the steel surface were always poor because of the low heat input during CMT welding brazing, which resulted in poor forming of the Al alloy/steel joints.…”

Section: Introductionmentioning

confidence: 99%

Research on the Microstructure and Properties of Al Alloy/Steel CMT Welding-Brazing Joints with Al–Si Flux-Cored Welding Wires

Liu,

Pu,

et al. 2023

Coatings

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Al alloy/steel composite structures combine the advantage of a lightweight Al alloy and high-strength steel and are widely used in new energy vehicles, solar photovoltaic, and other fields. The main problems with the connection of an Al alloy and steel are poor weld formation and difficulty in controlling the thickness of the intermetallic compounds (IMCs) at the interface of the Al alloy and steel, which deteriorates the mechanical properties and corrosion resistance of the Al alloy/steel joints. Therefore, experiments on Al alloy/steel CMT (cold metal transfer, CMT) welding brazing were conducted by using AlSi5 and AlSi12 flux-cored welding wires as filler metals. The macro morphology, microstructure composition, tensile strength, and corrosion resistance of the Al alloy/steel joints were then analyzed. The mechanism of the Noclock flux on the wettability and spreadability of the Al–Si welding wire to a low-carbon steel surface was discussed and the formation behavior of the IMCs at the interface layer of the Al alloy/steel joints was clarified. The results showed that the NH4F and NH4AlF4 of the Noclock flux induced and accelerated the removal of oxide films on the surface of the Al alloy and Al–Si welding wire at a high temperature. It promoted the wettability and spreadability of the Al–Si welding wire, which resulted in the improvement of the Al alloy/steel joint formation. Under the CMT arc heat source, the Al–Si welding wire melted, and then a chemical metallurgical reaction occurred among the Al, Si, and Fe elements. The τ5-Al7.2Fe1.8Si phase formed preferentially near the Al alloy fusion zone while the θ-Fe (Al, Si)3 phase formed near the steel side. Actually, the interface reaction layer was composed of a double-layer compound including the τ5-Al7.2Fe1.8Si phase and θ-Fe (Al, Si)3 phase. Additionally, the IMC thickness of the Al alloy/steel joint with the AlSi12 flux-cored welding wire was 3.01 μm, which was less than that with the AlSi5 flux-cored welding wire, so its tensile strength was less but its corrosion resistance was superior. The main reason for the corrosion resistance of Al alloy/steel joints was the presence of a large amount of Al2O3, FeO, and Fe2O3 in the passive film.

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Investigation on microstructure and mechanical properties of the dissimilar lap welding of Al alloy to steel with different filler materials and laser powers

Li,

Han,

et al. 2024

Int J Adv Manuf Technol

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CMT welding-brazing of al/steel dissimilar materials using cycle-step mode

Cited by 21 publications

References 29 publications

Study on Intermetallic Compound (IMC) in Dissimilar Joining of Steel and Aluminum (Fe-Al) – A Review Paper

Study on Intermetallic Compound (IMC) in Dissimilar Joining of Steel and Aluminum (Fe-Al) – A Review Paper

Research on the Microstructure and Properties of Al Alloy/Steel CMT Welding-Brazing Joints with Al–Si Flux-Cored Welding Wires

Investigation on microstructure and mechanical properties of the dissimilar lap welding of Al alloy to steel with different filler materials and laser powers

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