The material flow, temperature rise of the billet and pressing load during equal-channel angular process (ECAP) were studied by using 3D finite element method for Cu at different corner angle of mold, interfacial friction coefficient between the billet and the mold. As corner angle increases, the magnitude of shear deformation decreases and the strain difference between upper and lower part of the material becomes more apparent. The pressing load and peak temperature rise of the billet become low as the interfacial friction coefficient decreases. The effects of the corner angle of mold on the temperature rise of the billet can be ignored, but the effects of the friction coefficient between the mold and the billet must be taken into account. For pressing load, the effect of the friction coefficient is larger than that of the corner angle. A good agreement between the simulated and measured material flow is obtained.
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