Equal channel angular extrusion/pressing (ECAE/ECAP)
Microstructure Evaluation of Equal Channel Angular Extrusion in Aluminium 5083 Alloy by Cryogenic Treatment
... used as lubricants for reducing the friction between the samples and die surface. The rod which was used in this process was having a diameter of 10 mm and 120 mm in length. After that the rod has been dipped into liquid ...
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Numerical Estimation of Frictional Effects in Equal Channel Angular Extrusion
... maximum pressing load, a crucial variable in die ...the extrusion symmetry plane, and by comparing the load versus stroke curves for the ram (pressing load) and for the plunger (back ...maximum ...
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ECAP process improvement based on the design of rational inclined punch shapes for the acute-angled Segal 2 -dies: CFD 2-D description of dead zone reduction
... for Equal Channel Angular Extrusion (ECAE) or Equal Channel Angular Pressing (ECAP) of viscous incompress- ible continuum through acute-angled Segal 2θ-dies with 2θ ...
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Stress Corrosion Behavior of Mg 2 mass% Sn Alloy by Equal Channel Angular Extrusion
... angled channel through the die using the so-called Bc pressing route, in which the samples removed from the die and then rotated by 90 in the same di- rection between each ...
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A Review: Plastic Deformation through Equal Channel Angular Pressing
... rolling, extrusion, drawing etc, and by deforming the metal removed through grinding, milling and cutting ...size. Equal Channel Angular Pressing (ECAP) is very capable of producing ...
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Computational Analysis of Equal Channel Angular Pressing for Aluminum Alloys K Veeranjaneyulu & Ch Siddhartha
... The work material is selected as aluminum AA6351 and the corresponding cross section to be extruded with severe plastic deformation properties is considered as circular cross section. The die was designed for a 40 ton ...
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Equal Channel Angular Pressing of Al SiC Composites Fabricated by Stir Casting
... The experimental densities of composites have in- creased as reinforcement is increased up to 5% SiC; upon further increase to 10% SiC the composite experimental showed little decrease. This is probably due to air and ...
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Microstructure and Mechanical Properties of Cp Al Chips Consolidated Through Hot Equal Channel Angular Pressing
... significant fraction (nearly 60 to 70 pct) at approximately 200 nm, designated the ultrafine-grained phase (UFG). Furthermore, depending on the amount of unmilled Al added during blending, the remaining grain-size ...
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Deformation Characteristics Evaluation of Modified Equal Channel Angular Pressing Processes
... process: equal channel multi angular pressing (ECMAP), 11) T shaped ECAP (T-ECAP), 12) Cross shaped ECAP (Cross-ECAP), 13) rotary die ECAP, 14,15) ECAP combined with rolling: cold rolling and ...
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Effect of Equal Channel Angular Pressing on the Distribution of Reinforcements in the Discontinuous Metal Matrix Composites
... lubricant was used. The detailed ECAP procedure was de- scribed elsewhere. 13, 14) ECAP was performed up to 4 passes, i.e. accumulated effective strain of ∼ 4, without rotating the sample between passages, i.e. route A. ...
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Ten years of severe plastic deformation (SPD) in Iran, part I: equal channel angular pressing (ECAP)
... (2) in which is the shear stress and is the shear strain rate. Consequently, the slope of a log-log plot of shear stress against shear strain rate gives the SRS index. For instance, in Fig. 12 the shear yield stress was ...
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Plastic Flow and Strain Homogeneity of an Equal Channel Angular Pressing Process Enhanced through Forward Extrusion
... disappears and plastic deformation is highly localized in the bottom region of the ECAP. Due to this highly localized strain in the bottom of the ECAP deforming area, shown in stages 4 and 5 of Fig. 2(d), strain after ...
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Microstructure and Texture Evolution of the Al 20Sn Alloy Processed by Equal Channel Angular Pressing Using Route C
... According to the bar geometry, three distinctive directions were defined, i.e. ED: extrusion direction, ND: normal direction and TD: transverse direction, as shown in Fig. 1(b). This figure also shows the planes ...
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Mechanical Properties of Mg Y Zn Alloy Processed by Equal Channel Angular Extrusion
... The material used in the present study was a WZ73 alloy. The nominal composition is Mg–6.8 mass%Y–2.5 mass%Zn. The alloy was initially produced by ingot casting. The ingot was homogenized at 798 K for 24 h followed by ...
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Equal Channel Angular Pressing to Produce Ultrafine Pure Copper with Excellent Electrical and Mechanical Properties
... 11]. Equal channel angular pressing (ECAP) is one of the most important SPD techniques that can produce ultrafine to nanoscale grains in bulk materials ...
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The Effect of Warm Equal Channel Angular Extrusion on Ductility and Twinning in Magnesium Alloy ZK60
... in this context, as it addresses just that question. Agnew et al. found that the microstructure of hot-rolled ZK60 plate was heterogeneous, some larger grains (50 mm) being embed- ded in an array of smaller grains ...
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Superplasticity at Room Temperature in Zn 22Al Alloy Processed by Equal Channel Angular Extrusion
... estimated the slop of the line was about 54 kJ/mol and the datum in the present investigation was successfully included into the line without an inflection. In general, it has been reported that the activation energy for ...
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Grain Refinement in As Cast 7475 Aluminum Alloy under Hot Equal Channel Angular Pressing
... analysis were cut from central places in longitudinal section of the pressed samples in parallel to pressing direction. The metallographic analysis was carried out using Olympus PME3 in polarized light after ...
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Influence of equal-channel angular extrusion on impact toughness of aluminum and brass at room and low temperatures
... strain path as the slip is cancelled and strain is restored in four passes and two passes, respectively. The slip systems viewed on the x, y, and z planes (Valiev and Langdon 2006) are shown in Figure 1. The specimens ...
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Effect of Equal-Channel Angular Pressing Passes on the Corrosion Behavior of 1050 Aluminum Alloy in Natural Seawater
... In this work, the 1050 aluminum alloy (AA 1050) was processed by using equal-channel angular pressing (ECAP) technique for different number of passes namely; 0, 4, 6, 8, 12 and 16 passes. The ...
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