Deformation behaviour of AZ31 magnesium alloy sheet hybrid actuating with Al driver sheet and temperature in magnetic pulse forming

Xu, Junrui; Xie, Xueyun; Wen, Zhisheng; Cui, Junjia; Zhang, Xu; Zhu, Dibin; Liu, Yang

doi:10.1016/j.jmapro.2018.12.012

Cited by 17 publications

(3 citation statements)

References 25 publications

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“…Ambrogio et al [9] carried out an experimental study on electromagnetic assisted ISF, which showed that electromagnetic induction technology can heat the sheet in a short time and easily adjust the forming temperature. Xu et al [10] used electromagnetic pulses and heated aluminum alloy backing plates to assist the ISF of magnesium alloys, and veri ed the feasibility of improving the formability of magnesium alloys. Zhang et al [11] achieved warm ISF of magnesium alloy sheets by heating in an oil bath.…”

Section: Introductionmentioning

confidence: 99%

Surface quality study of AZ31B Mg alloy in electric pulse-ultrasonic assisted incremental sheet forming

Song¹,

Zhang²,

Chu³

et al. 2022

Preprint

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Poor surface quality is one of the main problems for the forming and application of magnesium alloys. In this study, electric pulse and ultrasonic vibration were simultaneously applied to the incremental sheet forming (ISF) process of magnesium alloys, and the effect of electric pulse - ultrasonic composite energy field on the surface quality was investigated. Compared with electric pulse assisted forming, composite energy field could improve the surface quality at the condition of higher current frequency (≥ 350HZ), lower step depth (0.1mm) and keep the effective current density less than 30A/mm2. Moreover, although the surface quality can be improved by ultrasonic energy in both directions, the effect is more significantly in direction perpendicular to the feed direction than that in the direction parallel to the feed direction. The repeated rolling caused by ultrasonic vibration is benefit to the rearrangement of the surface gully, and makes the surface profile height distribution relatively uniform. The surface quality also would be aggravated due to the “jumping” effect of the tool head and serious surface oxidative, which caused by excessive temperature increasing at the condition of very current density.

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Section: Introductionmentioning

confidence: 99%

Surface quality study of AZ31B Mg alloy in electric pulse-ultrasonic assisted incremental sheet forming

Song¹,

Zhang²,

Chu³

et al. 2022

Preprint

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“…Electromagnetic hot forming has also been proposed for difficult-to-deform materials. Xu et al [ 24 ] studied the formability of AZ31 magnesium alloy sheets at different temperatures. When the temperature increased from 25 °C to 200 °C, the forming limit increased.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

Deng

Liu

et al. 2021

Materials

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High-strength 7075 aluminum alloy is widely used in the aerospace industry. The forming performance of 7075 aluminum alloy is poor at room temperature. Therefore, hot forming is mainly adopted. Electromagnetic forming is a high-speed forming technology that can significantly improve the forming limit of difficult-to-deform materials. However, there are few studies on electromagnetic hot forming of 7075-T6 aluminum alloy. In this study, the deformation behavior of 7075-T6 aluminum alloy in the temperature range of 25 °C to 400 °C was investigated. As the temperature increased, the sheet forming height first decreased, then increased. When the forming temperature is between 200 °C and 300 °C, η phase coarsening leads to a decrease in stress and hardness of the material. When the forming temperature is between 300 °C and 400 °C, continuous dynamic recrystallization of 7075 aluminum alloy occurs, resulting in grain refinement and an increase in stress and hardness. The results of numerical simulations and experiments all show that the forming height and deformation uniformity of the sheet metal are optimal at 400 °C, compared to 200 °C.

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“…electromagnetic forming (EMF) technology has garnered considerable attention in shaping tubes and sheet metals. EMF of sheet metals and tube fittings has been applied in electromagnetic bulging [1]- [4], electromagnetic welding [5], electromagnetic compression [6], [7], electromagnetic stamping [8], [9], electromagnetic incremental forming [10], etc.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Coil Method for Electromagnetic Attraction Forming of Sheet Metals

et al. 2020

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Electromagnetic forming is a novel technology in which a coil is used to generate a pulsed Lorentz force for shaping sheet metal pieces. However, the Lorentz force between the coil and the sheet metal is generally repulsive due to the Lenz's Law, which limits the practical application of this technology. To break this bottleneck, a dual-coil method is proposed to generate attractive Lorentz force, which is then used to form sheet metals. The theoretical principle of this method is presented, and an infinite element model is established to simulate the forming effect. The simulation results show that an A1060-O plate with a diameter of 140 mm and thickness of 1 mm can be attractively shaped under this method. The maximum axial displacement of the plate reaches 2.74 mm. Unfortunately, a dent exists in this situation. Further analysis indicates that this dent can be eliminated by increasing the inner and outer diameters of the coils. Further, it is found that when the capacitance value of the long pulse-width discharge circuit is set to 5.6 mF and the initial discharge voltage is set to 10.690 kV, the sheet metal attains the best shape.

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Deformation behaviour of AZ31 magnesium alloy sheet hybrid actuating with Al driver sheet and temperature in magnetic pulse forming

Cited by 17 publications

References 25 publications

Surface quality study of AZ31B Mg alloy in electric pulse-ultrasonic assisted incremental sheet forming

Surface quality study of AZ31B Mg alloy in electric pulse-ultrasonic assisted incremental sheet forming

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

A Dual-Coil Method for Electromagnetic Attraction Forming of Sheet Metals

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