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Microcirculatory and functional changes in the retina and visual channels in multiple sclerosis
Published 2018-10-01“…Conclusion: Early changes of the retinal function were documented in patients with recent MS and ON history with almost equal involvement of the retinal ganglion cells of the parvo-, mango- and koniocellular systems into the pathological process. …”
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Study of Numerical Simulation during ECAP Processing of Can Based on Smooth Particle Hydrodynamics
Published 2019-01-01“…ECAP (Equal Channel Angular Pressing) is a well-known technique by which a specimen is pressed into an ECAP die to improve the mechanical properties by the nearly pure shear during the deformation process. …”
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Finite Element Modeling of ECAP-Linex Combined Process of Severe Plastic Deformation
Published 2023-01-01“…The paper presents theoretical studies of a new deformation process combining the stages of equal-channel angular pressing (ECAP) and the “Linex” scheme. …”
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Experimental insights into the effects of Mg addition and ECAP processing on the anomalous anneal strengthening of pure zinc
Published 2025-05-01“…In this study, the effects of different strategies, including alloying (by means of 1 wt% Mg addition), heat treatment (by means of annealing at different temperatures and times) and severe plastic deformation (by means of performing equal channel angular pressing, ECAP) on the mechanical properties of zinc were evaluated. …”
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Significant Enhancement of Strength and Ductility in Bioresorbable Zn–0.1Mg Alloy via ECAP Processing
Published 2025-06-01“…The as-cast alloy, characterised by a coarse-grained microstructure with intermetallic phases at grain boundaries and low strength and ductility, was subjected to two passes of Equal Channel Angular Pressing (ECAP). The intense plastic deformation transformed the coarse-grained structure into an ultrafine-grained solid solution matrix. …”
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Acoustic emission in compressed Mg-Li and Al alloys processed by ECAP, HPT and ARB methods
Published 2014-01-01“…In the paper there are presented the results of investigations of the relations between acoustic emission (AE) and the plastic strain mechanisms during channel-die compression of materials, based on both Mg-Li and Al alloys, having ultra fine-grained (UFG) or nanocrystalline structure obtained using the technique of equal channel (of both quadratic and circular section) angular pressing (ECAP) as well as the technique of high pressure torsion (HPT). …”
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ECAP processing-based improvement of mechanical and corrosion properties of Mg–Li–Y alloys designed for biomedical applications
Published 2025-05-01“…A selection of pre-extruded alloys from the Mg–Li–Y system designed for biodegradable orthopedic implant applications was processed by equal channel angular pressing (ECAP). …”
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Electromagnetic Stirring versus ECAP: Morphological Comparison of Al-Si-Cu Alloys to Make the Microstructural Refinement for Use in SSM Processing
Published 2016-01-01“…The low silicon alloy, Al-4.0wt%Si-2.5wt%Cu, presented excellent refinement when processed via equal channel angular pressing, presenting good morphological stability at the semisolid state, without significant changes in size or shape of the solid particles. …”
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Investigation of Mechanical and Corrosion Behavior of ECAP Processed AA7075 Through ML, ANNW, RSM, and SA Methodologies
Published 2025-04-01“…ABSTRACT This study employs a multi‐perspective modeling approach combining Response Surface Methodology (RSM), Machine Learning (ML), Artificial Neural Networks (ANNW), and Simulated Annealing (SA) to optimize Equal Channel Angular Pressing (ECAP) parameters for improving the mechanical and corrosion properties of AA7075 alloy. …”
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Effect of grain refinement by ECAP on the corrosion resistance of anodic coating of AA6063 prepared by pulse constant voltage anodizing process
Published 2025-05-01“…This study investigates the effects of severe plastic deformation and post-deformation aging treatment of AA6063 substrates on the microstructure, corrosion resistance and hydrophobicity of anodic films prepared using a pulse constant voltage process. Equal Channel Angular Pressing (ECAP) was applied to AA6063 substrates for up to six passes, followed by aging thermal treatment. …”
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31
Two-dimensional Sparse Antenna Array of a Passive Coherent Radar using a Parametric Algorithm of Signal Processing via the Section Method
Published 2022-04-01“…The construction of directional characteristics was implemented via computer simulation in the MATLAB environment with the effect of uncorrelated additive complex normal noise on the receiving channels in each AE as an interference.Results. The possibility and conditions for the application of the modified parametric Burg method in the problems of single signal detecting and angular resolution of equal-power signals in a passive coherent radar, which includes a two-dimensional sparse AA, were determined. …”
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Superplastic Behaviour of AZ61-F Magnesium Composite Materials
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COMPRESSION OF ECAPED TITANIUM MICRO-PILLARS FOR TWO PRINCIPAL ORIENTATIONS
Published 2020-06-01“…The thermomechanical processing by equal-channel angular pressing (ECAP) is used for certain metals and alloys in order to make their structure fine and to increase material strength. …”
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Approaching the refinement limit of nano laminated structures in cubic metals by severe plastic deformation
Published 2025-03-01“…In this paper, three kinds of metal with nanolamellar (NL) structure were successfully prepared by the method of equal channel angular processing (ECAP) followed by liquid nitrogen rolling (LNR). …”
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Determination of microstructural changes by severely plastically deformed copper-aluminum alloy: Optical study
Published 2014-01-01“…SPD was carried out with equal channel angular pressing (ECAP), which allowed that the material could be subjected to an intense plastic strain through simple shear. …”
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Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation
Published 2024-09-01“…The results show that the alloy processed by four passes of equal channel angular pressing (ECAP) at 300 °C prior to T6 treatment exhibits an excellent mechanical performance, achieving an ultimate tensile strength (UTS) and elongation (EL) of 485 MPa and 19%, respectively, which are 18.6% and 375% higher than that of the T6 alloy. …”
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The Effects of ECAP and Recovery Treatment on the Microstructure and the Mechanical, Tribological, and Corrosion Properties of 316L Steel
Published 2025-05-01“…This article reports a comprehensive study on the effects of equal channel angular pressing (ECAP) and subsequent recovery treatment on the microstructure and the mechanical, tribological, and corrosion properties of 316L. …”
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Synergistic improvement of strength and elongation of Zn-Mg alloys as orthopedic implants through ECAP
Published 2025-01-01“…The Zn-1.47 wt% Mg alloy achieved a superior combination of tensile strength (399 MPa) and elongation (19.5%) through complete refinement of its eutectic structure via equal-channel angular pressing (ECAP). Microstructural analysis revealed that this enhancement was driven by two key mechanisms: (1) dynamic recrystallization (DRX), which significantly reduced grain size, and (2) the formation of needle-like and particle-like precipitates within Zn grains, contributing to grain boundary and precipitation strengthening. …”
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Microstructure Changes and Improvement in the Mechanical Properties of As-Cast AlSi7MgCu0.5 Alloy Induced by the Heat Treatment and ECAP Technique at Room Temperature
Published 2018-01-01“…The changes in the microstructure and improvement in the mechanical properties of as-cast AlSi7MgCu0.5 alloy induced by the heat treatment and technique of equal channel angular pressing (ECAP) were investigated. …”
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