标题：Evaluation of deformation characters in edgesof hot rolled slab by lode parameter
作者：Bian, Hongxia ;Zhu, Liang ;Hou, Guoqing
作者机构：[Bian, Hongxia ;Zhu, Liang ;Hou, Guoqing ] State Key Lab, Gansu Advanced Non-ferrous Metal Mater, Lanzhou Univ. of Tech, Lanzhou, China;[Bian, Hongxia 更多
会议名称：2nd International Conference on Materials Science and Engineering, ICMSE 2013
会议日期：March 8, 2013 - March 10, 2013
来源：Advanced Materials Research
摘要：The hot rolling processes of slabs have been simulated by 3-D explicit dynamicsThermal-mechanical Finite Element Model (FEM) to solve the problems of edge defects. It cananalyze the deformation characteristics of rolling slabs, calculate Lode parameter values in rollingdeformation zone and analyze the stress-strain state in the entrance and exit of the slabs edge. Becausethere are the relationship between plastic deformation types and Lode parameter, and the quantitativerelation metal flow and various Lode parameter. Results showed that there are complicated metalflow and various Lode parameter values in the edge of rolling deformation zone. Although therestress-strain states are various in the entrance and exit of the slab edges the μdΕ<0, the tensile strainincrement in the direction of max principle strain was bigger than another two directions and theedges had the character of tensile deformation. This is the major cause that edge of slab is moredefects than other zone. © (2013) Trans Tech Publications, Switzerland.