基于晶体塑性的难变形材料不均匀变形多尺度建模研究进展  

Research progress of the multi-scale modeling of heterogeneous deformation for hard-to-deform material based on crystal plasticity

作　　者：詹梅[1] 李宏伟[1] 孙新新[1] 黄栋 武川[1] 王旭 陈姗姗[1] ZHAN Mei;LI Hong-wei;SUN Xin-xin;HUANG Dong;WU Chuan;WANG Xu;CHEN Shan-shan(School of Materials Science ＆ Engineering, Northwestern Polytechnical University, Xi＇an 710072, China)

机构地区：[1]西北工业大学材料科学与工程学院

出　　处：《塑性工程学报》2018年第1期1-14,共14页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51675433);中央高校基本科研业务费专项资金资助(3102017jc03009)

摘　　要：分析并综述了不均匀变形预测中的晶体塑性模型与求解算法,论述了考虑多相材料非均质特征与晶界异质性的晶体塑性建模难点与方法;分析并综述了用于微观组织形态演化预测的元胞自动机建模方法,并论述了考虑不均匀变形与组织形态演化交互作用机制的晶体塑性与元胞自动机耦合建模的关键难点及其解决方法。进一步论述了基于宏观有限元、细观晶体塑性有限元与微观元胞自动机的多尺度全耦合建模方法及其在钛合金复杂隔框构件等温局部加载成形多尺度耦合响应规律预测中的成功应用。最后分析了多尺度建模仍存在的问题,并展望了多尺度建模的发展趋势。Crystal plasticity modeling and its analysis algorithms for the heterogeneous deformation prediction were analyzed and reviewed,and the key difficulties and solutions of the crystal plasticity modeling considering the multi-phase heterogeneity characteristic and grain boundary inhomogeneity characteristic were discussed. The cellular automata modeling for the microstructure evolution was analyzed and reviewed,and the key difficulties and solutions of the coupled modeling between the crystal plasticity and cellular automata considering the interaction between heterogeneous deformation and microstructural evolution were demonstrated. Moreover,thoughts of the coupling multi-scale models based on macroscale finite element method,mesoscale crystal plasticity finite element method and microscale cellular automata,and applications of these models on the multi-scale response prediction of the forming of titanium complex bulkhead components were discussed. Finally,the existing problems in current multi-scale model was analyzed,and an outlook of multi-scale modeling was given.

关 键 词：多尺度建模 晶体塑性 不均匀变形 元胞自动机 组织演化 

分 类 号：TG319[金属学及工艺—金属压力加工]