异质体材料三维微观组织结构的可视化仿真  

Visualized simulation of heterogeneous 3D material microstructure

作　　者：李俊琛[1,2] 李旭东[1,2] 盛捷[3] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]兰州理工大学材料科学与工程学院,兰州730050 [3]兰州理工大学生命科学与工程学院,兰州730050

出　　处：《吉林大学学报（工学版）》2010年第1期92-97,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50571042;50271016);国家科技部重大基础研究前期研究专项项目(2003CCA03800)

摘　　要：介绍了一种可视化仿真三维异质体材料微观组织结构的有效方法。仿真的微观组织结构以从金相学分析获得的统计意义上的数据描述样本的形态学与晶体学结构。在仿真异质体材料多晶体基体微观组织结构的过程中,设计了构造三维Voronoi晶粒聚合体的增量式外存算法,在指定RVE区域内实现了海量多晶体基体微观组织结构的构造。随后,考虑实际异质体材料中第二相组成物可能的形态、空间取向、空间分布、界面相宽度等几何参数,设计了完全可控的仿真程序,可以根据实验分析需求,通过改变、控制、组合由计算机构筑的第二相组成物的几何实体,产生符合预定要求的微观组织结构。同时,开发了相应的可视化技术,展示了仿真得到的各种类型异质体材料微观组织结构模型。A method to simulate visually the 3D microstructure of polycrystals was proposed. The simulated microstrueture describes the morphologie and crystallographic textures of the sample with the statistical data obtained by the metallographic analysis. In the process of simulating the microstructures of the heterogeneous polycrystal materials, an incremental out-of-core algorithm Of 3D Voronoi polycrystalline aggregate was designed, and the real 3D microstructures of the heterogeneous polycrystals was eontructed in the given RVE region. Taking into account the geometric parameters of the second phase in the practical heterogeneous materials, such as the possible crystal form, the spatial orientation and distribution, the interface phase width, a completely controllable simulation program was compiled. The microstructure required by the experimental analysis can be generated by change, control, and combination of the computer-built second phase geometric substance. The corresponding visualization technique was developed to illustrate the simulated microstrueture model of various heterogeneous materials.

关 键 词：复合材料 多晶体基体 第二相组成物 可视化仿真 Voronoi增量算法 

分 类 号：TG113[金属学及工艺—物理冶金] TB33[金属学及工艺—金属学]