【作者】 戈晓岚； 许晓静； 汪建敏； 居志兰；

【Author】 Ge Xiaolan Xu Xiaojing Wang Jianmin Ju Zhilan(Advanced Forming Technology Institute of Jiangsu University, Zhenjiang,212013)

【机构】 江苏大学先进成形技术研究所；

【摘要】 ECAP是实现材料纯剪切变形的有效方法。本文采用Ansys有限元分析对ECAP的挤压过程进行仿真与分析,表明:内、外切角φ和ψ、圆角半径R等对出来的变形量有不同程度的影响。在此基础上,采用等径角挤压技术成功地得到了均匀、细小的等轴晶,其晶粒平均尺寸为0.5μm。更多还原

【Abstract】 ECAP is an effective method realizing pure shear deformation. In this paper, adopting FEA software Ansys to simulation and analysis the process of extrusion. The results show: die corner angle φandψ, the radius of round angle et al ,have some degree impact on the deformation of materials. Experimentswere conducted on pure to succeed in obtaining ultra-fine grained materials by equal channel angular pressing ( ECAP) techniques. ultra-fined and equiaxied grains which are about 0. 5 μm can be achieved.更多还原