Mechanical and microstructural characteristics of polycrystalline copper rolled asymmetrically to a high deformation level

Uniwersał, A.; Wróbel, Mirosław; Wierzbanowski, K.; Wroński, Sebastian; Baczmański, Andrzej

doi:10.1016/j.matchar.2018.12.017

Cited by 14 publications

(4 citation statements)

References 37 publications

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“…Crystallographic features in the formation of shear bands in polycrystalline were found during the study of face‐centered cubic and body‐centered cubic structures, such as aluminum alloys and copper alloys. [ 26 ] Researchers have found that the grains within shear bands ultimately deform along a slip system consistent with the alloy's shear plane and shear direction. [ 27 ] Therefore, any factors that affect lattice rotation will affect the generation of shear bands, such as crystallographic texture, loading direction, and grain size.…”

Section: Resultsmentioning

confidence: 99%

Evolution Behavior of Shear Band in Al‐0.5Mg‐0.4Si‐0.1Cu Alloy during Hot Compression Process

Wang,

Ding,

et al. 2024

Adv Eng Mater

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To clarify the evolution behavior of shear bands in Al‐0.5Mg‐0.4Si‐0.1Cu alloy under high temperature conditions, isothermal compression tests were carried out under 400 °C, 450 °C, and 500 °C with 50% compression at a strain rate of 1s‐1. Through Electron Backscattered Diffraction (EBSD), Schmid factors are mainly distributed between 0.395 and 0.495, making lattices easy to rotate and shear bands formed. The shear band, a local plastic deformation structure, has significant impact on the dynamic recrystallization and preferred orientation of grains. Through the recrystallization distribution maps, subgrains absorb a large amount of dislocations, which increases the grains orientation difference, resulting in the formation of recrystallized grains with high angle grain boundaries. In addition, bulging grain boundaries promote the formation of new nuclei. The newly formed nuclei will generate and grow by absorption of dislocations, which is the feature of discontinuous dynamic recrystallization (DDRX). These two phenomena were further confirmed by Transmission Electron Microscope (TEM) tests. Finally, R‐Cube textures mainly formed in shear bands at 400 °C, while in the matrix E‐textures mainly formed at 400 °C and 450 °C, and R‐Goss textures were rotated to form at 500 °C, which was confirmed by EBSD test results.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Evolution Behavior of Shear Band in Al‐0.5Mg‐0.4Si‐0.1Cu Alloy during Hot Compression Process

Wang,

Ding,

et al. 2024

Adv Eng Mater

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“…It is shown that the asymmetric rolling (ASR) process with different rotational speeds, roll diameters, or roll-to-plate friction conditions could cause intensive shear strains and accumulation of equivalent plastic strains inside the plates, consequently improving the through-thickness strain homogeneity compared with the SR process [4e8]. As a result, the ASR process has been widely applied for processing various metallic materials such as Mg [9e14], Al [15e20], Cu alloys [7,8,21], and other metallic materials [22e24], enabling the easy manufacture of large-scaled fine-grained materials comparing with other severe plastic deformation methods [25e28]. However, it also faces difficulties for rolling (mid)thick plates although it could benefit the microstructures and properties.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Bending Behavior and Through-Thickness Strain Distribution During Asymmetrical Rolling of High-Strength Aluminium Alloy Plates

Hou²,

Tian

et al. 2022

SSRN Journal

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“…[1] Compared to symmetric rolling, asymmetric rolling is widely used because of the benefits it provides, such as lower rolling force and better thinning ability. [2] After asymmetric rolling, the surface roughness of copper foil is considerably better than that of traditional electrodeposited copper foil, and the mechanical properties are significantly improved. [3] It is well known that the strength of copper foil increases after rolling due to work hardening, but studies have found that when the copper foil is thinned to a certain degree, the strength decreases, which is softening phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Rolled Copper Foils in Cryogenic and Room‐Temperature Environments

Zhao

Kong

2021

Adv Eng Mater

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The mechanical properties of high‐purity asymmetric rolled copper foils under cryogenic‐temperature and room‐temperature conditions are studied. The experimental results show that the ultimate tensile stress of the foils increases to a certain value (rolling reduction ratio ≈80%) and then decreases with a decrease in thickness when the tensile tests are carried out in the room‐temperature environment, which monotonically increases with the decrease in the foil thickness when the tensile tests are carried out in a cryogenic environment. The effect on the tensile strength of the copper foil is related to the intrinsic microstructural parameters, such as the dislocation density, grain boundary spacing, and dislocation source. The tensile test results at room and cryogenic temperatures reveal that the elongation decreases with an increase in the rolling reduction ratio. Interestingly, the copper foils of the tensile test at the cryogenic temperature exhibit better elongation than that at the room temperature.

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Mechanical and microstructural characteristics of polycrystalline copper rolled asymmetrically to a high deformation level

Cited by 14 publications

References 37 publications

Evolution Behavior of Shear Band in Al‐0.5Mg‐0.4Si‐0.1Cu Alloy during Hot Compression Process

Evolution Behavior of Shear Band in Al‐0.5Mg‐0.4Si‐0.1Cu Alloy during Hot Compression Process

Understanding the Bending Behavior and Through-Thickness Strain Distribution During Asymmetrical Rolling of High-Strength Aluminium Alloy Plates

Mechanical Properties of Rolled Copper Foils in Cryogenic and Room‐Temperature Environments

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