Finite Element Investigation of Equal Channel Angular Extrusion Process

Abstract

In this study, the effect of material properties on deformation pattern and strain distribution of the commercially-available pure titanium (CP-Ti) specimen during an equal channel angular extrusion (ECAE) was investigated. Finite element analyses were carried out for twodimensional plane strain condition at elevated temperatures. Material properties were assumed by hardening, softening, and no hardening behaviors based on the measured experiment data. The effects of friction conditions, die geometries, and processing routes were also examined under the same processing condition. Based on the value of average strain and standard deviation of the strain distribution, the magnitude and uniformity of deformation was determined depending on process conditions. In addition, damage parameters based on plastic work and Cockroft and Latham criteria were calculated to check the likeliness of surface cracking. Finally, non-isothermal analyses were carried out to explore the effect of processing temperature in the ECAE process.

Finite element investigation of equal channel angular extrusion with back pressure

“…Kim et al [5] numerically investigated the effect of die geometry and material properties under various processing conditions. Lee et al [6] examined the deformation patterns after multi-pass ECAE in A and C routes using FE analyses in order to explore the effect of processing routes. The shearing patterns predicted by FE simulations were very similar to the results of the previous study [7].…”

SPH Analysis of ECAP Process by Using Grain Refinement Model

“…This result agrees well with FE analysis. 23) 4. Effect of the Process Zone Angle Figure 7 shows the difference of materials flow for the variation of the angle (30, 60 and 90 ), with GR and without GR models.…”

Three-dimensional flow characteristics of aluminum alloy in multi-pass equal channel angular pressing

“…It was found from one study that the deformation within the workpiece was inhomogeneous unlike the ideal shear deformation and a lesser shear that occurred in the outer part of the workpiece [10]. Deformation patterns for the multi-pass ECAP in routes A and C were investigated under a plane strain condition in order to explore the effect of processing routes [11]. The shearing patterns predicted by FE simulations in these studies were very similar to the experimental results of the previous study reported by Furukawa et al [3].…”