Wang Lizhong1,An Jing1,Wang Jingtao2,Guo cheng1,Chen Jinde1
(1.School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;2.Department of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
Abstract:Numerical simulation and microstructure analysis to an equal channel angular pressing (CAP) of low-carbon steel were conducted, and the effective strain distribution and the pattern of pressing load were obtained via the numerical simulation. The simulated pressing load increases with increasing friction coefficient, and with a friction coefficient of 0.408 it is 2.1 times of that without friction,which coincides roughly with the experimental observation. Microstructure observation after one pass of ECAP shows that grain refinement might be more significant at the bottom than at the top of the sample, and the distribution corresponds to the effective strain features．
Keywords: equal channel angular pressing;low carbon steel;numerical simulation;microstructure