Investigation on effect of die geometric parameters on equal channel angular extrusion of bulk nanostructured magnesium alloy AZ31

Subject Areas : Nano

Mohammad Farzanfar ¹ , Ali Heidari ² , Mohsen Loh-mousavi ³

1 - Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr/Isfahan, Iran
2 - Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr/Isfahan, Iran
3 - Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr/Isfahan, Iran

Received: 2017-07-06 Accepted : 2017-09-09 Published : 2017-11-22

Keywords: Severe Plastic Deformation, equal channel angular extrusion, Fine Grained Materials, Die Geometric Parameters, Magnesium Alloy AZ31,

Abstract :

In this study, the equal channel angular extrusion (ECAE) of magnesium alloy AZ31 was simulated using 3D FEM by Abaqus software. The results show an appropriate agreement between the research results and the analytical relationships, experimental and numerical results of other researchers. Also, the forming force, strain, nano quality and workpiece behavior during the process were investigated. The results indicate that in the part of the workpiece that is at the channel angle side, better microstructure is formed. Also, the effect of die geometric parameters showed that the channel angle has a great impact on the effective plastic strain and forming force. By increasing the channel angle, the effective plastic strain and the forming force decreases. But the corner angle of the die does not have much effect.