equal channels angular pressing (ECAP)
Deformation Heterogeneities in Equal Channel Angular Pressing
... Porosity usually developing during ECAP is suppressed by BP leading to ductile fracture of the material during tensile testing. 71,72) As shown by an analysis of FEM, BP changes the flow behavior in the die. 54) For ...
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Equal Channel Angular Pressing of Aluminium Alloy 5083 using different die geometries
... by pressing the specimen through a die containing two channels, equal in cross section, intersecting at an angle of ϕ and with a corner angle of ψ, [4, ...the pressing operation ...first ...
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Grain Refinement in As Cast 7475 Aluminum Alloy under Hot Equal Channel Angular Pressing
... The alloy used was a 0.16%Zr modified 7475 aluminum alloy with the following chemical composition (in mass%): 6.04Zn, 2.46Mg, 1.77Cu, 0.23Cr, 0.16Zr, 0.03Si, 0.04Fe, 0.03Mn and the balance is Al. It was fabricated by ...
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Effect of Equal Channel Angular Pressing on the Distribution of Reinforcements in the Discontinuous Metal Matrix Composites
... fine grain structure and ultrahigh strength, no information is, at present, available on its application as a post work- ing process of PM processed discontinuous MMCs. The present investigation was carried out to ...
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Process Modelling of Equal Channel Angular Pressing for Ultrafine Grained Materials
... two channels of equal cross-section intersect at an channel angle ...as pressing direction, width direction and thickness di- rection, respectively, are ...
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Deformation Characteristics Evaluation of Modified Equal Channel Angular Pressing Processes
... higher at the corner regions where two channels meet and at the bottom region. In ECMAP with Route A and Route C, Figs. 7(d) and 7(e), the deformation is almost simple shear. However, the strain rate is very high ...
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Equal Channel Angular Pressing to Produce Ultrafine Pure Copper with Excellent Electrical and Mechanical Properties
... two channels that are connected by a 90° angle, was used to perform ...intersecting channels and equal cross sections where the arc of curvature at the outer point was ...
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Microstructuralevolution and mechanical behavior during annealing of aluminum deformed by equal channel angular pressing
... Abstract: This study aims to characterize the microstructure and the evolution of the mechanical behavior after annealing of the AA1070 aluminum alloy cold pressed equal angular channels. The ...
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A Review: Plastic Deformation through Equal Channel Angular Pressing
... two channels with identical cross sections and intersecting at an angle , usually 60 o < < 135 o ...the channels, the dimensions of the billet remain unchanged, and the process can in principle be ...
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Strength Enhancement and Deformation Behavior of Gold after Equal Channel Angular Pressing
... channels. Hence, the material hardens considerably due to grain refinement and dislocation accumulation so that an unusually high strength can be attained. A prominent feature of ECAP is its flexibility in ...
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Computational Analysis of Equal Channel Angular Pressing for Aluminum Alloys K Veeranjaneyulu & Ch Siddhartha
... plane lying at the intersection of two channels. The effective strain that is imposed on the work piece increases as the channel angle decreases. An important advantage of ECAP process is that a large amount of ...
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Influence of Equal Channel Angular Pressing on Tribological Properties of Low Carbon Steel (Fe 0,09C 0,64Si ,26Mn)
... of channels Φ = 90˚; after ECAP samples were subjected to heat treatment (HT): short-term low temperature annealing at 350 ˚C and 450 ˚C delayed for 1 hour ...
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Incremental non-equal channel angular pressing - FE simulation
... to be equal to the diagonal of a square. This results in π/2-1=0.57 volume of the round bar machined out. In order to be able to use the most popular and inexpensive round bars as the initial material but to ...
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A Portrait of Copper Processed by Equal Channel Angular Pressing
... using a split design die manufactured from tool steel X38CrMoV 5 1. The angle between the entrance and the exit channels was 90 ; a sharp die corner was used to maximize strain per ECAP pass. A typical specimen ...
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Effect Of Equal Channel Angular Pressing On Microstructure And Mechanical Properties On Non Dendritic LM25 Aluminium Alloy
... achieved the required level of deformation. When the simple shear taking place in a thin layer equal channels crossing plane, the deformation of billet will occur. Thus, with the high strain and more fine ...
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Deformation Behavior in Tubular Channel Angular Pressing (TCAP) Using Triangular and Semicircular Channels
... The difference between the equivalent plastic strain values in the nodes of N1, N3, and N5 increases when the deformation proceeds, while the difference between the curves of Fig. 7(a) is larger than Fig. 7(b). This ...
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Microstructure and Texture Evolution of the Al 20Sn Alloy Processed by Equal Channel Angular Pressing Using Route C
... In this work, the microstructure and texture evolution of an Al-20Sn (mass % ) alloy processed by Equal Channel Angular Pressing is presented. The evolution of dislocation cells into subgrains and ...
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Microstructural Evolution and Mechanical Properties of High Purity Aluminium Processed by Equal Channel Angular Pressing
... Further pressing beyond 2 passes gave rise to a decrease in hardness and a lowering of the flow stress level. These results are unusual because plastic straining generally leads to hardening and it is therefore ...
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Cyclic Deformation Behavior of Ultra Fine Grained Copper Produced by Equal Channel Angular Pressing
... In recent years, much attention has been given to the mechanical properties of ultra-fine grained (UFG) materials produced by severe plastic deformation (SPD) techniques such as equal channel angular ...
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Review on: influence of bp-ecap on mechanical characteristics of aluminium matrix composites
... Like with other types of composite materials, properties of MMCs depend strongly on production methods and parameters. Several methods for the preparation of composite structured materials have been developed so far. The ...
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