Effect of laser-Ti foil coupling on microstructure and mechanical property of steel/aluminum fusion welding joints

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

doi:10.1016/j.optlastec.2021.107114

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…There exist some drawbacks with the traditional joining Ti 2 AlNb-based alloys. Fusion welding technology generates great heat and tends to cause grain coarsening and growth in the weld zone [6]. Both electron beam welding and laser welding have high energy density and cooling rate, which often bring enormous residual stress and intensify the brittleness of welded joints [7,8].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study

Jin

Cai

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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A defect-free Ti 2 AlNb joint has been obtained by the inertia friction welding (IFW) technology. The weld zone (WZ) is composed of B2 grains refined by discontinuous dynamic recrystallization and enhanced by grain refinement strengthening. And the average microhardness decreases by about 30 HV from the WZ to the base metal. In-situ SEM analysis reveals that the heterogeneous structure of the joint causes strong strain partitioning during tensile deformation. The microcrack initiation occurs at the interface of the initial B2 phases and B2/O boundaries. Owing to stress concentration, the multi-slip bands and cracks tend to generate in the heat-affected zone (HAZ), causing a premature fracture.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study

Jin

Cai

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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“…Laser welding technology, as an advanced welding technique, has demonstrated significant application potential in the field of steelaluminum dissimilar metal welding due to its highly precise welding control capability [4]. By precisely adjusting parameters such as laser power, welding speed, focal position, and defocus amount, precise control over the welding process can be achieved, ensuring the quality and reliability of the weld [5,6].…”

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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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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Effect of laser-Ti foil coupling on microstructure and mechanical property of steel/aluminum fusion welding joints

Cited by 11 publications

References 25 publications

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study

Heterogeneous Deformation Behaviors of an Inertia Friction Welded Ti2AlNb Joint: an In-situ Study

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

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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