中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 24 No. 10 October 2014 |
（1. Mechanical Engineering Department, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran;
2. Applied Mechanics Department, Faculty of Mechanical Engineering,
K.N. Toosi University of Technology, Tehran, Iran）
Abstract:Non-equal channel lateral extrusion (NECLE) is a new process that can be used to attain higher grain refinement in comparison with equal channel lateral extrusion (ECLE). The die design for this process was numerically and experimentally studied. After finding a good correlation between the numerical and experimental results, more comprehensive FE analyses were carried out. Different die geometrical parameters were considered and their effects on the induced plastic strain, stress distribution, velocity field and forming load of the process were investigated. It was found that by this process with a suitable set of die geometrical parameters, higher induced effective strain and more homogeneous strain distribution could be achieved in comparison with ECLE operation.
Key words: magnesium alloy; non-equal channel lateral extrusion (NECLE); die geometry; homogeneity; arbitrary Lagrangian- Eulerian (ALE) method
