Thermal and non-thermal effects of Cu/Al laminated composite during electrically assisted tension

Huang, Tao; Xing, Binghui; Song, Kexing; Xu, Liujie; Yan, Song; Xiang, Nan; Guo, Junqing; Zhang, Xuebin; Huang, Liang

doi:10.1016/j.msea.2023.145237

Cited by 8 publications

(1 citation statement)

References 42 publications

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“…The motion of dislocations is promoted by the current, resulting in increased plastic deformation ability of the material at RT. Under the action of current, the dislocation density is reduced and the dislocation structure is rearranged, as shown in figure 3(d) [37]. The dislocation structure changes from a different direction to a direction parallel to the current after the action of the current, which is observed on both sides of the metal and at the interface.…”

Section: Electronic Windmentioning

confidence: 95%

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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Section: Electronic Windmentioning

confidence: 95%

Effects of electrical pulse on metal deformation behaviors

Huang,

Yang,

Xing

et al. 2024

Mater. Res. Express

Self Cite

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Recrystallization Behavior of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si Alloy under Electroshocking Treatment

Zhou,

Sun,

Wen

et al. 2024

Adv Eng Mater

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In this work, a novel electroshocking treatment (EST) method was employed to modify the microstructure of Ti‐6.5Al‐3.5Mo‐1.5Zr‐0.3Si alloy. The microstructural morphology and texture distribution after EST were characterized and analyzed to study the recrystallization behavior of the titanium alloy. After EST with 0.04 s, secondary αs phase transformed into β phase. After EST with 0.06 s, surrounding the αp phase, a significant amount of needle‐like martensitic phase (αM) precipitated. Electron backscatter diffraction results revealed that EST reduced intragranular orientation gradients, resulting in a convergence of each point orientations within individual grains. Under longer EST time, grain boundaries displayed greater irregularity. After EST with 0.05 s, partial recrystallization took place, and with an increase of EST time to 0.06 s, all deformed grains underwent complete recrystallization, forming defect‐free recrystallized grains. A substantial enhancement in texture intensity for both α and β phases, exhibiting prominent preferred orientations, and the increase in hardness values was contributed to the precipitation of αM phase. The stress analyses indicated that EST can optimize the distribution of residual stress and offer a potential solution for improving fatigue performance. All results showed that EST was an effective approach for manipulating the microstructure and optimizing the residual stress distribution of titanium alloys.This article is protected by copyright. All rights reserved.

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