3D finite element method analysis of deformation and temperature rise during equal-channel angular pressing

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A02; pp. 219 - 224
• Main Author: 张新平 陈光 汪雪 林杰 吴媚
• Format: Journal Article
• Language: English
• Published: Department of Materials Science and Engineering, Nanjing University of Science and Technology,Nanjing 210094, China 01.09.2006
• Subjects: 三维有限元法; 压制荷载; 温度分布; 物料流; 等通道转角挤压; equal-channel angular pressing; pressing load; finite element method; temperature distribution; material flow
• ISSN: 1003-6326

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 comer angle of mold, interfacial friction coefficient between the billet and the mold. As comer 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 interracial friction coefficient decreases. The effects of the comer 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 comer angle. A good agreement between the simulated and measured material flow is obtained.