Abstract:

A method to simulate visually the 3D microstructure of polycrystals was proposed. The simulated microstructure describes the morphologic 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 contructed 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.

Key words: composite material, polycrystals, second-phase composition, visualized simulation, incremental out-of-core algorithm for Voronoi