Abstract The calculation of Geometrically Necessary Dislocations (GNDs) in iron processed by ECAP has been carried out via Electron Back Scatter-Diffraction (EBSD) and Transmission Electron Microscopy (TEM). Transmission microscopy reveled higher and more accurate dislocation densities than Electron Back Scatter-Diffraction at different deformation levels.

中文翻译：

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等通道角挤压 (ECAP) 加工的铁中的几何必要位错 (GND)

摘要 通过电子背散射衍射 (EBSD) 和透射电子显微镜 (TEM) 计算了 ECAP 加工的铁中的几何必要位错 (GND)。在不同变形水平下，透射显微镜显示出比电子背散射衍射更高、更准确的位错密度。