基于电子背散射分析(EBSD)技术对纯铜柱状晶标定获得的初始晶粒形貌和平均取向,利用晶体塑性理论,建立了基于晶粒真实取向和形貌的多晶塑性有限元模型,模拟了纯铜柱状晶单轴压缩过程中的取向和形貌变化。通过实施相应的单轴压缩实验获得了取向和形貌变化的实验数据。系统地比较了多晶样品中每一个晶粒取向和形貌的模拟结果和实验结果,得到晶粒取向和微观结构变化的统计性结果。
The initial morphology and mean orientation of columnar-grains of pure copper was obtained by electron backscattering diffraction (EBSD). A finite element model based on crystal plasticity was established to simulate the orientation and deformation band evolution of individual grain during uniaxial compression. Corresponding compression test was carried out to obtain experimental data which showed the actual evolution of orientation and band morphology in the polycrystalline sample. A series of statistical results of grain orientation evolution were obtained, and the calculated results were compared to experimental data.
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