[PDF] Top 20 Finite Element Investigation of Equal Channel Angular Extrusion Process

... an equal channel angular extrusion (ECAE) was ...investigated. Finite element analyses were carried out for two- dimensional plane strain condition at elevated ... See full document

... Equal channel angular pressing or extrusion (ECAP) has great potential for developing ultrafine grain structure consisting of homogeneous and equiaxed grains dominated by high angle grain ... See full document

... Figures 17 and 18 are fractographs of ECAE-processed specimen B2 tested at 24.7°C and −70°C, respectively. The SEM fractographs reveal the presence of isolated brittle features in dominant ductile characteristics. ... See full document

... be equal to the diagonal of a ...NECAP process is proposed, where a round bar is converted into a square/rectangular bar with nearly identical cross section ...the process is non-equal ... See full document

... present investigation also exhibit the lowest flow stress at all strain rates; it was apparent at lower strain rates (below 1 10 2 s 1 ) the flow stress particularly increases with an increase in grain ... See full document

... FE process takes place first, whereas, it is the second step in ...ECAP process of rectangular specimens becomes two- ...ECAP process have been carried out using the commercial rigid-plastic finite ... See full document

... consistent investigation of the effect of the ECAE process parameters (including route and number of passes and the history of temperature and ram velocity) on the tensile ductility of alloy ZK60 at room ... See full document

... Equal channel angular pressing (ECAP) process provides an efficient procedure for achieving ultrafine grained microstructures with excellent mechanical properties in metallic ...the ... See full document

... Equal channel angular pressing (ECAP) is one of the most popular methods of obtaining ultrafine grained (UFG) ...the process, so called ... See full document

... Three-dimensional finite element analysis is employed to estimate the coefficient of friction from the maximum pressing load, a crucial variable in die ...The finite element model consists of ... See full document

... Fig. 9 shows the pressure distribution on the tools obtained by the Finite Element Analysis as implemented by ANSYS. The widths of the vertical and horizontal channels were 10mm and 5mm respectively and ... See full document

... Cyclic Extrusion Compression (CEC), Equal Channel Angular Pressing (ECAP), High Pressure Torsion (HPT), Accumulative Roll Bonding (ARB), Cyclic Closed Die Forging (CCDF), and Repetitive ... See full document

... the extrusion process; the second part is a theoretical back- ground, fundamentals and mathematical equations of the research topic; the third part was about the experimental equipments and procedure where ... See full document

... ECAE process, change-channel angular extrusion (CCAE), in order to introduce even more severe plastic deformation so as to reduce the number of ...CCAE process and to compare behaviors ... See full document

... Equal channel angular pressing (ECAP) is a severe plastic deformation (SPD) technique leading to re fi nement of the grain size of materials to submicron or even nano-size length ...angled ... See full document

... cubic element in the initial billet of material through a die that has two channels which intersect at an angle during the first ECAP ...around extrusion direction, four commonly applied routes have been ... See full document

... Aluminum extrusion is a metal forming process used for mass production of aluminum products with constant cross section profiles such as rods, tubes, beams, wires, multi-porting tubes ...of extrusion ... See full document

... In addition to practical techniques, several numbers of analytical methods such as slab method, slip- line method, upper bound technique, etc., are improved for quantitative analysis of frictional condition. However, the ... See full document

... The finite element code uses an updated Lagrangian procedure based on the flow formation approach. This software uses direct iteration method and the Conjugate-Gradient method to solve the nonlinear ... See full document

... Copper is one of the most important materials used for electrical connectors with a high thermal and electricial conductivity, and there is an ongoing demand to improve its mechanical properties without sacrificing other ... See full document