Effect of electric current on formability and microstructure evolution of Cu/Al laminated composite

Xing, Binghui; Huang, Tao; Song, Ke-xing; Xu, Liu-jie; Xiang, Nan; Chen, Xuewen; Chen, Fuxiao

doi:10.1016/j.jmrt.2022.09.077

Cited by 13 publications

(3 citation statements)

References 34 publications

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“…The effect of current significantly reduced the recrystallization temperature of the material. As shown in figure 30, dynamic recrystallization occured on both sides of the Cu/Al layered metal under the action of current [109]. In contrast to the quasi-static tensile specimens at room temperature, the recrystallization rate of the EAT specimens was slightly higher than that of the RT tensile specimens and most of the recrystallization positions of Al layer in EAT sample were distributed in elongated grains.…”

Section: Recrystallizationmentioning

confidence: 93%

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: Recrystallizationmentioning

confidence: 93%

Effects of electrical pulse on metal deformation behaviors

Huang,

Yang,

Xing

et al. 2024

Mater. Res. Express

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“…Layered metal composites offer several advantages by preserving and combining the positive attributes of single metals or alloys, resulting in a superior comprehensive performance [ 1 , 2 , 3 ]. The integration of different metallic materials [ 4 , 5 , 6 ] and preparation processes [ 7 , 8 , 9 , 10 ] can effectively enhance their strength, toughness, stiffness, impact resistance, wear resistance, and electrical conductivity [ 11 , 12 , 13 , 14 , 15 , 16 ]. Employing nano-polycrystalline layered composites offers a substantial enhancement of the material’s performance, and this improvement stems from the remarkable strength exhibited by nano-scale grains, surpassing that of coarse crystalline materials with equivalent compositions by several magnitudes [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

The Plastic Deformation Mechanism in Nano-Polycrystalline Al/Mg Layered Composites: A Molecular Dynamics Study

Li,

Shen,

et al. 2024

Nanomaterials

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Understanding plastic deformation behaviour is key to optimising the mechanical properties of nano-polycrystalline layered composites. This study employs the molecular dynamics (MD) simulation to comprehensively investigate the effects of various factors, such as grain sizes, strain rates, and the interlayer thicknesses of the intermetallic compounds (IMCs), on the plastic deformation behaviour of nano-polycrystalline Al/Mg layered composites. Our findings reveal that the influence of grain size on deformation behaviour is governed by the strain rate, and an increase in grain size is inversely proportional to yield stress at low strain rates, whereas it is positively proportional to tensile stress at high strain rates. Moreover, an optimal thickness of the intermediate layer contributes to enhanced composite strength, whereas an excessive thickness leads to reduced tensile strength due to the fewer grain boundaries (GBs) available for accommodating dislocations. The reinforcing impact of the intermediate IMCs layer diminishes at excessive strain rates, as the grains struggle to accommodate substantial large strains within a limited timeframe encountered at high strain rates. The insights into grain sizes, strain rates, and interlayer thicknesses obtained from this study enable the tailored development of nanocomposites with optimal mechanical characteristics.

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“…The composite materials have excellent properties due to the composite matrix, which is difficult to achieve for single-phase materials [ 1 ]. Different application scenarios have given rise to different metal composites, for example, Al/Mg [ 2 ], Cu/Ni [ 3 ], TiO 2 /Cu [ 4 ], Al/Ni [ 5 ], Al/Sn [ 6 ], Cu/Zr [ 7 ], Al/Ti/Mg [ 8 ], Cu/Al [ 9 , 10 , 11 , 12 ], Cu/Al/Cu [ 13 ], etc. As a typical metal laminated composite, Cu/Al composite has been widely used in electric power, heat transmission, rail transit, and other fields due to the characteristics of high electrical conductivity and high thermal conductivity of Cu and the light weight and low cost of Al, which have attracted extensive attention [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cu/Al/Cu Laminated Composites Reinforced with Graphene by Hot Pressing and Evaluation of Their Electrical Conductivity

Zheng

Zhang

et al. 2023

Materials

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Metal laminated composites are widely used in industrial and commercial applications due to their excellent overall performance. In this study, the copper/graphene-aluminum-copper/graphene (Cu/Gr-Al-Cu/Gr) laminated composites were prepared by ingenious hot pressing design. Raman, optical microscope (OM), scanning electron microscope (SEM), van der Pauw (vdP), and X-Ray Diffractometer (XRD) were used to investigate the graphene status, interface bonding, diffusion layer thickness, electrical conductivity, Miller indices and secondary phases, respectively. The results demonstrate that the Cu-Al interfaces in the Cu/Gr-Al-Cu/Gr composites were free of pores, cracks and other defects and bonded well. The number of graphene layers was varied by regulating the thickness of the Cu/Gr layer, with the Cu/Gr foils fabricated by chemical vapor deposition (CVD). The electrical conductivity of the composite was significantly improved by the induced high-quality interfaces Cu/Gr structure. The increased number of graphene layers is beneficial for enhancing the electrical conductivity of the Cu/Gr-Al-Cu/Gr composite, and the highest conductivity improved by 20.5% compared to that of raw Al.

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Effect of electric current on formability and microstructure evolution of Cu/Al laminated composite

Cited by 13 publications

References 34 publications

Effects of electrical pulse on metal deformation behaviors

Effects of electrical pulse on metal deformation behaviors

The Plastic Deformation Mechanism in Nano-Polycrystalline Al/Mg Layered Composites: A Molecular Dynamics Study

Fabrication of Cu/Al/Cu Laminated Composites Reinforced with Graphene by Hot Pressing and Evaluation of Their Electrical Conductivity

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