摘要
极薄带轧制过程中,当轧件厚度降低到与晶粒尺寸同一量级时,其变形在很大程度上受到晶粒形态和取向等内部组织状态的影响,传统塑性理论不能直接用于微观塑性成形的分析。介绍了采用晶体塑性有限元方法对极薄带轧制过程所做的研究,如轧件厚度和晶粒尺寸对轧制变形的影响、塑性变形时滑移系的激活和运动等。
In metal foil rolling,when thickness of foil decreased to the same scale of grain size,the deformation behavior of foil is influenced greatly by its internal state,such as morphology and orientation of grains.Classical plasticity theory is not suitable for analysis of plastic deformation at microscopic level.In this paper,studies on metal foil rolling process by employing crystal plasticity finite element method were introduced.For example,the influence of thickness and grain size of foil on deformation of foil,activation and development of slip system in plastic deformation.
作者
刘相华
赵启林
陈守东
LIU Xiang-hua;ZHAO Qi-lin;CHEN Shou-dong(a.State Key Laboratory of Rolling and Automation,b.School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;School of Mechanical Engineering,Tongling College,Tongling 244061,China)
出处
《轧钢》
2018年第5期1-5,共5页
Steel Rolling
基金
国家自然科学基金资助项目(51374069)
关键词
极薄带
晶体塑性有限元
滑移系
晶粒取向
metal foil
crystal plasticity finite element
slip system
grain orientations
