Upper-Bound Analysis for Change-Channel Angular Extrusion

Tian Mo Liu; Yu Liu; Li Wei Lu; Fu Sheng Pan

doi:10.4028/www.scientific.net/MSF.610-613.838

Paper Titles

Deformation Behavior and Dynamic Recrystallization of As-Cast Mg-Y-Nd-Gd-Zr Alloy: A Study with Processing Map
p.815

Mechanical Properties and Microstructure of AM140 Magnesium Alloy
p.822

Research on the Microstructures and Mechanical Properties of Annealed Cold Upsetting AZ31 Magnesium Alloy
p.826

Damage Evolution Equation of AZ31B Magnesium Alloy during Superplastic Deformation
p.831

Upper-Bound Analysis for Change-Channel Angular Extrusion
p.838

Research on the Rolling of AZ31 Strip Prepared by Twin Roll Casting
p.844

First-Principles Study of the Mechanical Properties of Mg-Based Alloys with FCC and Hexagonal Structure
p.848

Friction and Wear Properties of Magnetron Sputtered DLC/SiC Films on Magnesium Alloy
p.853

Mechanical Testing and Numerical Simulation of the Fracture Toughness of Magnesium Alloy AM60 under Impact Loading
p.859

HomeMaterials Science ForumMaterials Science Forum Vols. 610-613Upper-Bound Analysis for Change-Channel Angular...

Upper-Bound Analysis for Change-Channel Angular Extrusion

Abstract:

Deformation of the material during 90° change-channel angular extrusion (CCAE) process is analyzed using upper-bound theorem. The mathematical model was established which includes the effect of friction between the sample and inner surface of the die, radius of inner and outer corner of the die, and the dead metal zone on the deformation patterns during change-channel angular extrusion deformation process. The model of parameters is explored in relation to the deformation of the material during the change-channel angular extrusion process. Results showed that the extrusion force increased with the increase of extrusion ratio (a2/b2), friction factor m, out corner and the reduce of inner corner. Further directions for progress in upper-bound analysis in change-channel angular extrusion deformation process are outlined.