Forming limit diagram of Al-Cu two-layer metallic sheets considering the Marciniak and Kuczynski theory

Hashemi, Ramin; Karajibani, Ehsan

doi:10.1177/0954405416654419

Cited by 20 publications

(14 citation statements)

References 41 publications

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“…1,2 Based on its close-packed hexagonal structure, the elongation of magnesium alloys is usually less than 20% at room temperature, and thus, its plastic deformation capacity is poor. 3–6 In the previous studies, most of the scholars improve the forming performance of magnesium alloys by increasing the forming temperature or refining the grains. For example, Kong et al 7 made a breakthrough progress in tool design through precise control of temperature distribution of the magnesium alloy AZ31B tubular material, and minimized the defects in tube hydroforming at the evaluated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Investigation on deformation behavior of magnesium alloy sheet AZ31B in pulsating hydroforming

Pan

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Magnesium alloys have been known as the next generation material for lightweight body structures. Pulsating hydroforming is an effective method to improve magnesium alloy sheet forming performance, and the formed parts are characterized by lightweight, high-specific strength and stiffness. The deformation performance of magnesium alloy sheet AZ31B with a thickness of 0.6 mm under pulsating hydroforming has been investigated by means of experimental study, numerical simulation and theoretical analysis. The results show that under the same maximum hydraulic pressure, compared with simple linear loading, the magnesium alloy forming parts with pulsating hydraulic loading not only have better wall thickness uniformity and larger bulging height but also can delay the occurrence of fracture, improve the forming performance and ultimate the forming ability of magnesium alloy sheet. A new evaluation index is proposed to simplify the comprehensive forming performance of magnesium alloy parts with different amplitudes and frequencies more accurately, which can also be applied to determine the optimal forming parameters of magnesium alloy sheet AZ31B in the pulsating loading condition.

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Section: Introductionmentioning

confidence: 99%

Investigation on deformation behavior of magnesium alloy sheet AZ31B in pulsating hydroforming

Pan

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…They showed that the limit drawing ratio (LDR) of the bimetallic sheet lies between the LDR of its parts (each monolayer that the composite made of it). Hashemi and Karajibani 21 studied the FLD of the explosively welded Al/Cu sheets experimentally and theoretically. Yan et al 22 investigated the microstructure of the bonding interface of the Al/Mg (AZ31B) bimetallic sheet prepared by explosive welding.…”

Section: Introductionmentioning

confidence: 99%

Investigation of forming limit diagram and mechanical properties of the bimetallic Al/Cu composite sheet at different temperatures which fabricated by explosive welding

Alaie

Hashemi

Kazemi

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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This research aims to investigate the mechanical properties, fractography and formability of Al/Cu two-layer composite sheets at three temperatures (23 °C, 120 °C and 220 °C). The bimetal sheet was fabricated by the explosive welding method. The anisotropy of the Al/Cu bimetallic composite sheet was investigated. The result showed significant anisotropy in the Al/Cu composite sheet due to the explosive welding process. The Vickers hardness measurements demonstrated that the hardness in both aluminum and copper sides increased because of the work hardening phenomenon. The fractography of the surfaces was investigated by the scanning electron microscope after tensile tests to study the effect of temperature and the direction, which the samples prepared for the tensile test with respect to the explosion direction, on the mechanism of the fracture. For the tensile test, the samples were prepared parallel to the detonation direction [Formula: see text] and two other directions with respect to the explosion direction [Formula: see text] from the AA1100/Cu10100 bimetallic sheet. Finally, the forming limit diagram of the Al/Cu composite sheet was determined at the three mentioned temperatures. The results demonstrated that temperature and the direction had a considerable effect on the mechanism of the rupture and formability. As the temperature of the specimen rises, the regions that brittle fracture happened became less and the formability improved significantly. The formability of the Al/Cu composite sheet enhanced about 34.8% when the temperature increased from 23 °C to 120 °C and 67.5% when it increased from 120 °C to 220 °C.

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“…Two primary test methods, in-plane [4][5][6] and out-ofplane [7][8][9][10][11] formability experiments, are widely adopted to find out the FLDs for sheet metals under different forming situations, including deformation rate and temperature. 12 Various researchers 13,14 have also adopted planar biaxial tensile experiments to determine FLDs for sheet metals, since effect of friction is absent and precise control of strain path is possible.…”

Section: Introductionmentioning

confidence: 99%

Effect of specimen orientation to the rolling direction on uniaxial tensile forming and failure limits

Ghosal

Paul

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Alteration of forming and failure limits due to planar anisotropy of the sheet metal significantly affects the safe forming operation region and finally successfully manufacturing of a sheet metal formed component. This article presents the effect of planar anisotropy on uniaxial tensile properties, forming and failure limits of cold-rolled ferritic and dual-phase steels. In-situ three dimensional digital image correlation technique is used to measure the evolution of local strain components during uniaxial tensile test. For both the steels, necking limit is highest for the specimen at an orientation of 90° to rolling direction, while failure limit is highest for those specimen whose orientation is 45° to rolling direction for ferritic steel, and both 0° and 90° to rolling direction for dual-phase steel. Uniaxial tensile deformation path for ferritic steel holds lower slope than dual-phase steel as depicted in major versus minor strain plot.

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Forming limit diagram of Al-Cu two-layer metallic sheets considering the Marciniak and Kuczynski theory

Cited by 20 publications

References 41 publications

Investigation on deformation behavior of magnesium alloy sheet AZ31B in pulsating hydroforming

Investigation on deformation behavior of magnesium alloy sheet AZ31B in pulsating hydroforming

Investigation of forming limit diagram and mechanical properties of the bimetallic Al/Cu composite sheet at different temperatures which fabricated by explosive welding

Effect of specimen orientation to the rolling direction on uniaxial tensile forming and failure limits

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