Experimental investigation on aging treatment of 7050 alloy assisted by electric pulse

Kang, Kaijiao; Li, Dayong; Wang, Ao; Shi, Daming; Gao, Guanjun; Xu, Zhoumei

doi:10.1016/j.rinp.2020.103016

Cited by 15 publications

(2 citation statements)

References 18 publications

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“…The orchestrated phenomena of nucleation, precipitation and subsequent growth of the secondary phase during the ageing process are closely tied to atomic diffusion dynamics. Moreover, the influence of the pulsed magnetic field in modulating the diffusion activation energy (normalΔG) can be described as follows: 27 where ΔG0 represents the diffusion activation energy in CA treatment and ΔGPMF denotes the diffusion activation energy by applied magnetic field. Here energy (ΔGPMF) has two components as follows: 28 where ΔGintmag is the magnetisation energy of the material itself and ΔGextmag shows the magnetic field the total energy.…”

Section: Discussionmentioning

confidence: 99%

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Pan,

Zhou,

et al. 2024

Materials Science and Technology

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This study investigates the impact of pulsed magnetic fields (33 mT) under varying ageing temperatures (175, 185 and 195 °C) on α-Al grains, secondary phases and mechanical properties of A356 aluminium alloy. Results show that magnetic field ageing treatment can not only refines α-Al grains and promotes Si particle precipitation, but also improves the size and morphology of eutectic Si. The optimal α-Al grain refinement post-magnetic field treatment is observed at an ageing temperature of 195 °C. Meanwhile, the ultimate tensile strength and yield strength values were recorded at 345 and 283 MPa, respectively. The magnetic field ageing treatment exerts a dual influence: it accelerates atom diffusion, fostering the precipitation of reinforcing phases and simultaneously refines alloy grains, increasing the grain boundaries.

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Section: Discussionmentioning

confidence: 99%

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Pan,

Zhou,

et al. 2024

Materials Science and Technology

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“…These research results indicate that in the EAF process, the metal material formability can be improved, suggesting that this method has the potential to be a new forming method instead of cold/hot forming. Electroassisted bending [22], electroassisted rolling [23], electropulse processing [24] and electroassisted embossing [25] are created by the introduction of electric current into the material forming process.…”

Section: Introductionmentioning

confidence: 99%

Effects of electrical pulse on metal deformation behaviors

Huang,

Yang,

Xing

et al. 2024

Mater. Res. Express

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As a kind of special energy field assisted plastic forming, electric pulse assisted plastic forming combines multiple physical fields, such as thermal, electrical, magnetic and mechanical effects, has multiple effects on metal. It has a good industrial application prospect in the fields of directional microstructure regulation of materials and preparation of new materials. The flow stress of metal materials can be effectively reduced by electro-pulse assisted forming. The action mechanism of pulse current includes thermodynamics (Joule heating effect) and kinetic (pure electro-plastic effect or athermal effect). Thermodynamically, electric pulses can be used to provide the energy for dislocation migration and atomic diffusion, and aid in microstructure changes such as recrystallization, phase transition and microcrack healing of metals. In terms of dynamics, electric pulse has an effect on the speed and path of dislocation structure evolution. On this basis, a series of theoretical models for accurately predicting the flow stress of materials in electrically assisted forming process were formulated by combining the stress-strain constitutive relationship considering the temperature rise effect and the pure electro-plastic effect. The accuracy of the predicting model is greatly enhanced by the introduction of electrical parameters. The mechanism for electrically assisted forming was further revealed.

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Study on Effects of Pulsed Current Treatment on Ultrasonic Welded Joint of Al5052‐H32 Alloy

Ren,

Li,

Chen

et al. 2024

Adv Eng Mater

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The effect of pulse current on the mechanical properties of ultrasonic welded joints of 5052‐H32 aluminum alloy (Al5052‐H32) plate with a thickness of 2 mm is investigated experimentally. First, ultrasonic lap welding is performed to prepare the welded joint. Then, the pulsed current with different current densities and durations is applied to the welded joint. The impact of pulsed current on the properties of the welded joints is evaluated through tensile lap shear testing, observation using a metallographic microscope, and hardness testing. In the results, it is indicated that the tensile lap shear strength, elongation, and hardness of the welded joints can be improved by applying pulsed current properly. However, excessive input of electrical energy can lead to a decrease in the mechanical properties of the welded joints. Compared to the joint without pulse current treatment, the microstructure shows significant healing of the weld seam under the action of pulsed current. The feasibility of enhancing the mechanical performance of ultrasonically welded joints through the utilization of pulsed current is highlighted by these findings.

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Experimental investigation on aging treatment of 7050 alloy assisted by electric pulse

Cited by 15 publications

References 18 publications

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Effects of electrical pulse on metal deformation behaviors

Study on Effects of Pulsed Current Treatment on Ultrasonic Welded Joint of Al5052‐H32 Alloy

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