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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Deformation Induced Microstructural Modification
Presentation Title Effect of Cryogenic Equal Channel Angular Pressing on Mechanical Behavior and Microstructure of Pure Copper
Author(s) Pedro Henrique Fernandes Oliveira, Danielle Magalhães, Andrea Kliauga, Vitor Sordi
On-Site Speaker (Planned) Pedro Henrique Fernandes Oliveira
Abstract Scope The aim of the present work was to perform ECAP on pure copper at cryogenic temperature (193 K) and compare the effects on mechanical behavior and microstructure with the ECAP performed at room temperature (298 K). The ECAP procedure was performed using a die with an angle between the channels (Φ) of 120° and an outer curvature angle (Ψ) of 22°. The samples were processed at both temperatures, up to ten ECAP passes (10X), giving an equivalent strain of ~6.7. The billets processed at 193 K via ECAP achieved higher values of hardness, yield and ultimate tensile strength. This also indicated a combination of grain refinement, high dislocation density and energy stored in a form of microstructural defects, higher than those achieved at 298 K. Hence, it was concluded that cryogenic ECAP is an effective route for promoting grain refinement and, consequently, promote an increase in mechanical strength.
Proceedings Inclusion? Planned:
Keywords Copper / Nickel / Cobalt, Other, Other

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Deformation Induced Precipitation (DIP) in Light Alloys: Theory and Experiments
Effect of Cryogenic Equal Channel Angular Pressing on Mechanical Behavior and Microstructure of Pure Copper
Effect of High Pressure Torsion processing of Nb and Nb-alloys on the evolution of microstructure and texture
Effect of Loading Path on Grain Misorientation Evolution in Polycrystalline Al under Large Deformation
Evolution of Mechanical Properties and Microstructure in Accumulative Roll Bonded FCC/BCC Metallic Composites
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Grain Refinement and Bimodal distribution of precipitates in Al 6xxx and 7xxx alloys during ShAPE (Shear Assisted Processing and Extrusion)
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High Pressure Torsion Processed Maraging steels: Microstructure and Mechanical Behaviour
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Microstructural Changes in Nanotwinned Metals under Various Deformation Modes
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Molecular Dynamics Simulations of Defect Structure Evolution under Shear Deformation in Polycrystalline Al
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Tailoring the mechanical performance in novel Zn-Ag-Mg alloy processed by cold plastic deformation processes
The Effect of Processing Parameters on the Microstructure and Performance of Ni-Mn-Ga Alloys
The unusual effect of HPT processing on microstructure and mechanical properties in Zn-alloys
Thermomechanical Processing of Dilute Mg-Zn-Ca Alloys
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