A crystal plasticity FE study of macro-and micro-subdivision in aluminium single crystals{001}<110>multi-pass rolled to a high reduction

作     者：Hui Wang Cheng Lu Kiet Tieu Yu Liu Hui Wang;Cheng Lu;Kiet Tieu;Yu Liu

作者机构：School of MechanicalMaterials and Mechatronic EngineeringUniversity of WollongongNew South Wales 2522Australia Research Center for Advanced Science and TechnologyThe University of TokyoJapan 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第76卷第17期

页      面：231-246页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Australian Research Council Discovery Project(DP170103092) 

主　　题：Crystal plasticity FE Single crystal Multi-pass rolling Submodel Subdivision Substructure 

摘      要：In this study,the substructure formation in a multi-pass rolled aluminium single crystal{001}was investigated by the crystal plasticity finite element model,and the predations were validated by experimental observations at both macro-and micro-scale.A finite element model for multi-pass rolling was developed to follow the real experimental rolling scheme,by which the through-thickness macroscopic subdivision was successfully predicted up to a 90%*** macro-subdivision was featured by forming matrix bands through the thickness,and the deformation behaviours,in terms of slip activity,shear strain and crystal rotation,alternated between matrix *** development of matrix bands,stability of crystal orientations,and correlation between slip activity,shear strain and crystal rotation have been *** modelling method,Submodel,was used to exceedingly increase the mesh resolution in smaller regions of interest,and the experimentally observed microstructure,i.e.,micro-subdivision was explicitly and spatially *** predictions were obtained in Submodels with different element sizes,which proves the feasibility of this method in predicting microstructure *** was found that the substructure formation by varying slip activity and crystal rotation between domains is energy *** procedure of substructure formation was explained based on the predictions,three types of substructure have been identified,and the substructure formation was discussed.