Finite Element Simulation of Equal Channel Angular Pressing: Effect of Die Angle and Number of Passes

  • D.N. Awang Sh'ri Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia https://orcid.org/0000-0002-8382-0455
  • M.A.H. Abu Hassan Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Z.S. Zahari Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • W.S. Wan Harun Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia https://orcid.org/0000-0002-1673-5584
Keywords: Equal channel angular pressing (ECAP); bulk nanostructured metals, severe plastic deformation; aluminium alloy 6061

Abstract

Equal channel angular pressing (ECAP) is one of the popular severe plastic deformation processes used to produce bulk nanostructured materials. The degree of homogeneity of nanostructured is affected by various die parameters. In this paper, the effect of internal die angle (ϕ) and number of passes (N) on the strain behaviour of Aluminium Alloy 6061 (AA6061) during ECAP was investigated by using three-dimensional finite element analysis. The effect of number of passes and die angle on the homogeneity within the workpiece was analysed in terms of contours, radial view contour and inhomogeneity index. The analysis is done by comparing workpiece extruded up to 8 passes at die angle of 120° and 126°. It is observed that the resulting strain is higher at 120° die. However, the inhomogeneity index is decreasing in a similar pattern in both dies. The simulation results shed some lights on the optimum design of ECAP die for homogeneous microstructure.

Published
2019-03-21
How to Cite
Awang Sh’ri, D., Abu Hassan, M., Zahari, Z., & Wan Harun, W. (2019). Finite Element Simulation of Equal Channel Angular Pressing: Effect of Die Angle and Number of Passes. International Journal of Automotive and Mechanical Engineering, 16(1), 6402-6414. https://doi.org/10.15282/ijame.16.1.2019.22.0484