Electroplastic Effect during Tension and Bending in Duplex Stainless Steel

Пахомов, Михаил Андреевич; Korolkov, Oleg; Pigato, Mirko; Gennari, Claudio; Calliari, Irene; Stolyarov, V. V.

doi:10.3390/ma16114119

Cited by 3 publications

(3 citation statements)

References 26 publications

(45 reference statements)

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“…The direction and polarity of the current are also considered important factors. It is known from practice that the direction of the pulse current can coincide, be opposite to the direction of deformation (rolling and drawing), or even be oriented at an angle (bending and stamping) [ 23 ]. It is assumed that the EPE is maximal when the electron drift velocity coincides with the direction of the external force.…”

Section: Methods Of Current Introductionmentioning

confidence: 99%

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A Pulsed Current Application to the Deformation Processing of Materials

Stolyarov,

Misochenko

2023

Materials

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A review of studies on the electroplastic effect on the deformation process in various conductive materials and alloys for the last decade has been carried out. Aspects, such as the mode and regimes of electric current, the practical methods of its introduction into materials with different deformation schemes, features of deformation behavior accompanied by a pulsed current of different materials, structural changes caused by the combined action of deformation and current, the influence of structural features on the electroplastic effect, changes in the physical, mechanical, and technological properties of materials subjected to plastic deformation under current, possible mechanisms and methods of physical and computer modeling of the electroplastic effect, and potential and practical applications of the electroplastic effect are considered. The growing research interest in the manifestation of the electroplastic effect in such new modern materials as shape-memory alloys and ultrafine-grained and nanostructured alloys is shown. Various methods of modeling the mechanisms of electroplasticity, especially at the microlevel, are becoming the most realistic approach for the prediction of the deformation behavior and physical and mechanical properties of various materials. Original examples of the practical application of electropulse methods in the processes of drawing, microstamping, and others are given.

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Section: Methods Of Current Introductionmentioning

confidence: 99%

“…It is known that pulsed current is used in higher speed processes, such as stamping and bending [ 104 ], when not only deformability increases but also springiness decreases [ 23 ].…”

Section: Application Of Epementioning

confidence: 99%

A Pulsed Current Application to the Deformation Processing of Materials

Stolyarov,

Misochenko

2023

Materials

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“…In many cases, previous work has shown that electrically assisted forming has resulted in metals being formed further than conventional forming methods alone without sacrificing strength or ductility. The contribution in the flow stress reduction from heating by an external source was less than that from tension with pulse current at the same temperatures [15,16]. Mohammadtabar et al [17] focused on the effect of the electric current pulse type on the springback, microstructure, texture, and mechanical properties during the V-bending process of the AA2024 aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Current Intensity and Feed Speed in Electrically Assisted Necking and Thickening of 5A02 Aluminum Alloy Tubes

Fan,

Xu,

Tao

et al. 2024

Materials

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In order to further explore the forming limits of thin-wall tube necking and thickening, and obtain sufficient thickness of the tube in the thickening area, local electric pulse-assisted forming experiments were carried out to study the effects of current intensity and feed speed on the necking and thickening forming of thin-wall tube. The experimental results show that with the increase in current intensity, the temperature in the forming area of the tube increases, and the forming load for necking and thickening decreases. However, with the increase in feed speed, the overall forming load for necking and thickening increases in general, and the smaller feed speed is more conducive to forming. Taking into account the forming efficiency and electrode loss, the corresponding forming process window is obtained for the manufacturing of good parts. That is, during the necking stage, the current intensity shall not be less than 300 A, and the feed speed shall not exceed 10 mm/min. During the thickening stage, the current intensity should not be less than 1400 A, and the feed speed should not exceed 1 mm/min. The target part is finally formed, with an average wall thickness of 5.984 mm in the thickening zone and a thickening rate of 303.2%.

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Electroplasticity effects: from mechanism to application

Liu,

Jia,

et al. 2023

Int J Adv Manuf Technol

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Electroplastic Effect during Tension and Bending in Duplex Stainless Steel

Cited by 3 publications

References 26 publications

A Pulsed Current Application to the Deformation Processing of Materials

A Pulsed Current Application to the Deformation Processing of Materials

Experimental Investigation of Current Intensity and Feed Speed in Electrically Assisted Necking and Thickening of 5A02 Aluminum Alloy Tubes

Electroplasticity effects: from mechanism to application

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