Texture evolution during equal channel angular extrusion

Analysis of Crystallographic Textures in Aluminum Plates Processed by Equal Channel Angular Extrusion

“…[3,5,6] It is interesting also to compare the textures obtained in our work with previous results on ECAE-processed plates. [9] While the experimental observations of texture strengths in the AA1050 plates are similar to those reported by Ferrasse et al [9] on Al−0.5 wt pct Cu plates, there is a large difference in the simulation data, where the simulated textures reported in Reference 9 are much stronger than those in our simulations. For example, for route B C〈ND〉 (termed route D in Reference 9) the texture indices from their Taylor simulations [9] are almost an order of magnitude greater than those obtained in our work (see Figures 1(a-c)).…”

“…[1] While the effect of processing route on the microstructure and texture development in ECAE-deformed rods and bars has been investigated in a large number of publications [2][3][4][5][6] , only a few studies have been carried out for establishing this effect for ECAE-processed plates, for which new routes, different from those proposed for rod or bar samples, can be utilized. [7][8][9][10][11] In a recent work on AA1050 plates deformed by 8 ECAE passes either without rotation between passes (route A) or with 90 deg sequential rotations about the plate normal ND (route B C〈ND〉 ), [11] it was found that the microstructure obtained via route B C〈ND〉 was more refined than that obtained via route A.…”

“…[11] The effect of the processing route on texture evolution in ECAE plates was investigated by Ferrasse et al [9,10] However, these authors considered a large number of orientation fibers differing from the shear-type fibers commonly adopted for characterizing ECAE textures, [2][3][4][5][6] which complicates a comparison of textures in their plate samples with those in rod samples described in many other publications. To better compare the general tendencies of texture evolution during ECAE of plates with those of rod samples, a modeling and experimental investigation of textures formed by ECAE has therefore been carried out and is described in the present work for commercial purity aluminum.…”

Quantitative Microstructural Characterization of Thick Aluminum Plates Heavily Deformed Using Equal Channel Angular Extrusion

“…[1] A number of new processing techniques has been proposed for structural refinement by application of multiple deformation passes. [2] One technique that has received particular attention is equal channel angular extrusion (ECAE), [1][2][3][4][5][6] in which a billet is repeatedly extruded through a die with two equal intersecting channels.…”

MICROSTRUCTURAL EVOLUTION OF AZ31 MAGNESIUM ALLOY PROCESSED BY A NEW NOBLE SEVERE PLASTIC DEFORMATION METHOD

“…By far, several different severe plastic deformation (SPD) processing techniques are now available including Equal-Channel Angular Pressing (ECAP), High-Pressure Torsion (HPT), Multi-Directional Forging (MDF), Accumulative Roll-Bonding (ARB) and Twist Extrusion (TE). However," most of the documented experimental and theoretical work has been focused on metals with face centered cubic (FCC) crystalline structures [1][2][3][4][5] ". "Various metals such as Al 1,2 , Cu 3 , Ni 4 , fe 6 have been examined through SPD methods to produce ultra fine grained structures."…”