Cold angular rolling process as a continuous severe plastic deformation technique

Reis, Leonardo Mayer; Carvalho, Amanda P.; Lee, Isshu; Wu, Ying-Hsin; Han, Jae-Kyung; Santala, Melissa K.; Kawasaki, Megumi; Figueiredo, Roberto B.

doi:10.1007/s10853-023-08295-9

Cited by 4 publications

(11 citation statements)

References 56 publications

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“…The principles of the CARP setup and procedure are described earlier. [ 14 ] In practice, an unlimited‐length sheet metal is fed between the outer die and a rotating roll. This setup allows the sheet metal to undergo 10% cold work by rolling followed by an ECAP‐like shear process.…”

Section: Methodsmentioning

confidence: 99%

“…The technique has no theoretical limitation on sheet width, however, FEM analysis showed that friction between the die and sheet sample may increase the stresses in the machine and torque requirements to high levels which are proportional to sample width. [ 14 ] In addition to tooling requirements, it is important to determine if the evolution of structure and properties is affected by the sample width to evaluate the potential for scaling up the process. Thus, Cu sheets having different widths of 30.0 (full‐width) and 15.0 mm (half‐width) were applied in this study.…”

Section: Methodsmentioning

confidence: 99%

“…An FEM study demonstrated that CARP may display challenges in processing hard metals, such as steel, due to the introduction of tremendously high stresses in the CARP tools. [14] 2018), [117] (2021) [68] Cu (99 2019), [120] Sarkeeva and Alexandrov (2020) [67] Cu-1. 2020) [69] Cu-0.…”

Section: Continuous and Two-step Spd Metal Processes And The Importan...mentioning

confidence: 99%

“…[13] A recent report has presented a new continuous process called the cold angular rolling process (CARP) that involves components of cold rolling and ECAP. [14] The uniqueness of CARP lies in the required tools which are only a set of an outer die and a roller, which can be attached with an additional designed fixture to any hydraulic system that can rotate the roller. By utilizing the HPT machine, instead of the conventional HPT process that requires a set of dies to apply concurrent compressive pressure and torsion straining for processing coin-shape samples, a continuous metal process of CARP can be operated by attaching the required tools onto the HPT machine.…”

Section: Introductionmentioning

confidence: 99%

“…Figure shows a diagram of the concept of discontinuous and continuous metal processes of HPT and CARP, respectively, when using an HPT machine, and photos of the required tools for these processes and the processed HPT disks and the segments of the CARP‐processed metal sheets. The capability of CARP was modeled by applying the finite element method (FEM) in an early report, [ 14 ] but experimental validation of the process and characterization of the processed metal sheets has to be studied for evaluating the continuous metal process.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

Lee,

Bhatta,

et al. 2023

Adv Eng Mater

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The cold angular rolling process (CARP) is being developed as a continuous severe plastic deformation (SPD) technique, which can process metal sheets without any length limitations at room temperature. CARP contains cold rolling and equal‐channel angular process components. The sheet thickness is kept consistent before and after CARP, allowing multiple passes of the sheet. The desired microstructure and mechanical properties can be achieved in the processed metallic sheets. The current study is aimed to evaluate the capability of CARP by processing copper sheets with different sheet widths for repetitive passes. The CARP‐treated sheets are examined by lab‐scale X‐ray and high‐energy synchrotron X‐ray diffraction to investigate the evolution in dislocation density, texture, and strain anisotropy, and by tensile testing to identify the bulk mechanical properties. The digital image correlation (DIC) method is applied to tensile testing so that strain localization within the sample gauge was visualized and deformation behavior was evaluated after yielding till post‐necking by estimating the hardening exponent and strain hardening rate of the CARP‐treated sheet. Comparing the reported continuous and multiple‐step processes on Cu and its alloys, the present study confirms CARP is potentially a useful sheet process for strengthening ductile metals.This article is protected by copyright. All rights reserved.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Continuous and Two-step Spd Metal Processes And The Importan...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

Lee,

Bhatta,

et al. 2023

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

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Evaluating High‐Pressure Torsion Scale‐Up

Reis,

Hohenwarter,

Kawasaki

et al. 2024

Adv Eng Mater

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Increasing sample dimensions in high‐pressure torsion (HPT) processing affects load and torque requirements, deformation distribution, and heating. Finite‐element modeling (FEM) and experiments are used to investigate the effect of technical parameters on the scaling up of HPT. Simulations confirm that axial load and torque requirements are proportional to the square and the cube of the sample radius, respectively. The temperature rise also displays a pronounced dependency on the radius. Decreasing the diameter‐to‐thickness ratio can cause heterogeneity in strain distribution along the thickness direction at the edges of the sample. Such heterogeneity is governed by friction conditions between the material and the lateral wall of the anvil depression. Simulation of HPT processing of ring‐shaped samples shows that it is possible to reach more homogeneous distribution of strain and flow stress in the processed material. Experiments using magnesium confirm a tendency for strain localization in the early stage of HPT processing but increasing the number of turns increases the homogeneity of the material. The embodied energy in HPT processing is discussed.

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A review of methods and effects for improving production robustness in industrial micro-deep drawing

Arinbjarnar,

Schumann,

Moske

et al. 2024

Int J Mater Form

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Cold angular rolling process as a continuous severe plastic deformation technique

Cited by 4 publications

References 56 publications

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

Evaluating High‐Pressure Torsion Scale‐Up

A review of methods and effects for improving production robustness in industrial micro-deep drawing

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