Investigation of mechanical and microstructural properties of pure copper processed by combined extrusion-equal channel angular pressing (C-Ex-ECAP)

Akbarzadeh, Behzad; Gorji, Hamid; Bakhshi-Jooybari, Mohammad; Jamaati, Roohollah; Mirnia, Mohammad Javad

doi:10.1007/s00170-021-06692-5

Cited by 11 publications

(6 citation statements)

References 36 publications

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“…For comparison purposes, representative studies on Cu and its alloys processed by these SPD techniques are summarized and compared with the present work. Table 4 shows the summary of the continuous [10,[54][55][56][99][100][101][102][103][104][105][106][107][108][109][110][111] and multiple-step SPD techniques [11,53,57,[67][68][69]71,73,[112][113][114][115][116][117][118][119][120][121][122][123][124] on pure Cu and alloys with the processing condition, imposed strain, final 2020) [54] Cu (99.99%) SRAR (%15 mm s À1 , route A, 6 passes) %0.6 per pass 5.2 100-120 343.7 388.5 13.9 1.0 Â 10 À3 Lee et al ( 2018), [105] (2019) [106] Cu (99.99%) SRAR (%15 mm s À1 , route C, 6 passes) 2020) [107] Cu-0.…”

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

confidence: 99%

“…Figure 13. A conventional plot of yield strength versus ductility illustrating the relationship between yield strength and ductility generated by adapting a previously published plot [16] for pure Cu and alloys after continuous [10,[54][55][56][99][100][101][102][103][104][105][106][107][108][109][110][111] and multiple-step SPD processes. [11,53,57,[67][68][69]71,73,[112][113][114][115][116][117][118][119][120][121][122][123][124] The white circles are a set of representative datum points for Cu after different cold rolling percentages, [16] Cu alloys from the database [127] are shown in gray, and a dotted curve shows a border for the classic strength and ductility limit for general Cu alloys.…”

Section: Supporting Informationmentioning

confidence: 99%

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

confidence: 99%

Section: Supporting Informationmentioning

confidence: 99%

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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“…There is an increasing interest in the ultra ne-grained materials due to their exceptional properties [1][2][3][4][5][6][7]. It is well known that the reduction in grain sizes in metals and metal alloys has an effect on increasing the mechanical strength without decreasing the ductility properties as in the case of work hardening [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Equal Channel Angular Pressing on the Properties of Rolled Commercial Purity A1100 Aluminum

boussaada

Mebarek²,

Bouasla³

et al. 2022

Preprint

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Commercial grade A1100 aluminum specimens, widely used in deep drawing, is subjected to rolling followed by severe plastic deformation by Equal Channel Angular Pressing (ECAP). The ECAP die is designed and built in 42CrMo4 steel, hyper-hardened. It has a bent channel with an internal angle 𝜑=115° and an external angle ψ = 8°. The used deformation paths are the conventional route A as well as a non-conventional route noted Ci. The ECAP process is carried out at room temperature. The lowering speed of the movable crosshead of the press is 0.5 mm/s. The rolled and then extruded aluminum properties are studied by means of micro-hardness measurements, tensile tests and X-ray diffraction. Hardening is observed from the first pass, for both routes. The ultimate tensile strength presents a small variation for route A and decrease for route Ci. The elongation to failure increase for both A and Ci routes. The average grain diameter is on the order of 2,9µm after rolling and 1,3 µm after ECAP process in one pass.

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“…Results showed that the yield strength and hardness of samples increased, and electrical conductivity was reduced by this new method [7]. In 1974, Etherington introduced a new idea, Conform, for the continuous extrusion of metals.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the effective parameters and optimal design in ECAP-Conform process of commercially pure titanium using statistical and numerical approaches

2022

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The Equal Channel Angular Pressing-Conform (ECAP-Conform) process has improved the mechanical and functional properties of materials as well as resolves the disadvantages of conventional ECAP. The main goal of this study was investigation of the variable in ECAP-Conform process of pure titanium Grade 2. The design of experiments with full factorial technique was implemented in conjunction with finite element numerical simulation.The equivalent plastic strain, required torque, applied force on the ECAP die, and the warping radius of the product were measured and results were interpreted using analysis of variance. It was found that the ECAP die angles and the rod bending angle have the highest effect on both imposed strain and required torque. Also, the rod bending angle and the rod-die friction had no significant effect on the warping radius. The optimal values were specified for minimizing the required torque, reaction force, and warping radius, and maximizing the imposed strain. Based on the optimal estimated parameters, the minimum values of torque, force, warping radius, and maximum value of equivalent strain were predicted to 8.4 kN.m, 42 kN, 0.36 m, and 1.7, respectively. Also, the response optimizer obtained the results with less than 8% error in comparison with numerical simulation.

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Investigation of mechanical and microstructural properties of pure copper processed by combined extrusion-equal channel angular pressing (C-Ex-ECAP)

Cited by 11 publications

References 36 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

Effect of Equal Channel Angular Pressing on the Properties of Rolled Commercial Purity A1100 Aluminum

An investigation on the effective parameters and optimal design in ECAP-Conform process of commercially pure titanium using statistical and numerical approaches

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