Effect of process parameters on microstructure and properties of laser welded joints of aluminum/steel with Ni/Cu interlayer

Cao, Xia; Wang, Gang; Xing, Chang; Tan, Caiwang; Jiang, Jinhai

doi:10.1016/s1003-6326(21)65654-6

Cited by 17 publications

(6 citation statements)

References 17 publications

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“…In the welding of aluminum/steel dissimilar metals, the research on laser welding processes faces a series of critical issues. Firstly, optimizing the selection of laser power and welding speed is necessary to achieve precise control of heat input, thereby reducing the influence of the heat-affected zone (HAZ) and thermal stress [7][8][9]. Secondly, by appropriately adjusting the defocus amount, energy distribution can be controlled, enabling optimized fusion of steel and aluminum materials and consequently enhancing the mechanical properties of the welded joint [10].…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of laser welding parameters for steel/Al based on Kriging-MSSA

Zhu,

Guo,

Zhang

et al. 2024

Weld World

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In the context of automotive lightweighting strategy, steel/aluminum hybrid structures are widely used in the automotive industry. To address the reliability of steel/aluminum dissimilar metal joints, this study conducted steel/aluminum dissimilar metal laser welding tests by Taguchi's design of experiments method and obtained relevant data. Based on the test results, a Kriging model with laser power, welding speed and defocusing amount as inputs, and base material deformation and welded joint tensile strength as outputs was established. In this paper, with the amount of deformation of base material and tensile strength of welded joints after welding as the optimization objectives, the optimization analysis is carried out by combining the Kriging model and the multi-objective bottled sea-sheath swarm optimization algorithm (MSSA). The results show that under the conditions of laser power of 450.47W, welding speed of 11.88mm/s, and defocusing amount of 5.34mm, the optimization objective reaches the optimal level, the base material warpage deformation is reduced by 22.33% compared with the pre-optimization, and the tensile strength of the welded joints is improved by 18.01%.

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Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of laser welding parameters for steel/Al based on Kriging-MSSA

Zhu,

Guo,

Zhang

et al. 2024

Weld World

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“…It can be said that LAM technology is an ideal manufacturing method for the connection of Ti-based alloy/TiAl-based alloy dissimilar metal materials. Dissimilar metal connection can be realized by optimizing parameters and adding alloy elements on the basis of LAM technology [12][13][14][15][16]. Compared with other additive manufacturing technologies, LAM technology has high manufacturing precision (20 µm), the minimum wall thickness can reach 100 µm, component performance can reach the level of forging with the same composition and component densities are nearly 100%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium Layer on Microstructure and Properties of TC4 (Ti-6Al-4V)/TiAl (Ti-48Al-2Cr-2Nb) Dissimilar Metals Produced by Laser Additive Manufacturing

Wang,

Liu,

Liang

et al. 2023

Coatings

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Dissimilar metal samples of TC4/TiAl were successfully prepared by laser additive manufacturing (LAM) technology, with pure vanadium as the interlayer. The microstructure, phase composition, element distribution and mechanical properties at the interface of TC4/V and TiAl/V were analyzed by optical microscope (OM), scanning electron microscope (SEM) and backscattering diffraction (EBSD). The experimental results showed that the interface microstructure of TiAl/V is mainly composed of γ, α2 phase and V solid solution. The microstructure of the TC4/V interface is mainly composed of β-Ti and V solid solution. There are no holes, metallurgical defects or microcracks at the above two interfaces, and the interface is bonded well. With the increase in the number of deposition layers, the interface bonding depth increases, and its thickness increases from 30 μm to 80 μm. The mechanical properties tests showed that the tensile strength and elongation of dissimilar metals with two layers of V interlayer TC4/TiAl are the highest, and their values are 483 MPa and 0.35%, respectively. Compared with the one-layer V intermediate layer sample (tensile strength 405 MPa, elongation 0.24%), the tensile strength and elongation are increased by 19.2% and 45%, respectively. The tensile strength and elongation of dissimilar metals in three-layer V interlayer TC4/TiAl are the lowest, and their values are 350 MPa and 0.16%.

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“…[12,13] It was previously reported that Ni foils, Ti foils, or Ni/Cu foil interlayers in the laser welding process were used to suppress brittle IMCs (mainly the brittle binary phase of Fe-Al) formed between the iron-based material and the aluminum alloy in the FZ. [14][15][16] Furthermore, adding Mo content was useful for grain refinement during welding. [17] Previous studies [18,19] indicated that Ni could reduce the content of the solidified primary δ phase in welded joints and promote the transformation of the δ phase into the δ phase during the laser welding of Al-Si-coated press-hardened steel (PHS), which is similar to the results of a Joñoro's study [20] in which the formation of δ ferrite in 9-12% Cr steel-welded joints was inhibited by increasing the content of Cr.…”

Section: Introductionmentioning

confidence: 99%

Role of Ni Content on Microstructure, Mechanical Property, and In‐Site Local Corrosion Behavior of Welded Joints Produced by Laser Welding of Dual‐Phase Steel

Zhai,

Liu,

et al. 2023

steel research int.

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In this study, the effects of Ni content on the microstructure, microhardness, and in‐site local corrosion behavior of laser‐welded joints in dual‐phase steel were investigated. The experimental results indicated that the microstructure of the fusion zone changed from martensite to austenite as the Ni content increased. The fusion zone (FZ) hardnesses of the 0Ni (no Ni foil addition) and 50Ni (50 μm Ni foil) welded joints were higher than that of the 100Ni (100 μm Ni foil) welded joints because of the austenite in the 100Ni welded joint. The welded joint without Ni showed severe pitting corrosion (more than 15 pitting sites in each zone of the welded joint) at the tested corrosion time. However, when immersed in the corrosion solution, the welded joints with added Ni exhibited slight pitting corrosion (less than 5 pitting sites). The Ni addition inhibited the pitting corrosion of the welded joints of high‐strength dual‐phase steel.This article is protected by copyright. All rights reserved.

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Effect of process parameters on microstructure and properties of laser welded joints of aluminum/steel with Ni/Cu interlayer

Cited by 17 publications

References 17 publications

Multi-objective optimization of laser welding parameters for steel/Al based on Kriging-MSSA

Multi-objective optimization of laser welding parameters for steel/Al based on Kriging-MSSA

Effect of Vanadium Layer on Microstructure and Properties of TC4 (Ti-6Al-4V)/TiAl (Ti-48Al-2Cr-2Nb) Dissimilar Metals Produced by Laser Additive Manufacturing

Role of Ni Content on Microstructure, Mechanical Property, and In‐Site Local Corrosion Behavior of Welded Joints Produced by Laser Welding of Dual‐Phase Steel

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