The evolution of geometrically necessary dislocations (GND) in aluminum was studied using high-resolution EBSD. Small grains had higher GND density than coarse grains and were most pronounced at a strain of ∼9.8%, due to GNDs were more homogeneously organized at strain >9.8%. Furthermore, <111> oriented grains with higher Taylor factor stored more GNDs than <100> grains.

中文翻译：

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单晶变形过程中多晶铝中几何必要位错的晶粒尺寸和取向依赖性：与机械行为的关系

使用高分辨率EBSD研究了铝中几何必要位错（GND）的演变。小晶粒比粗晶粒具有更高的GND密度，并且最显着的是〜9.8％的应变，这是因为GND在> 9.8％的应变下组织更均匀。此外，具有更高泰勒系数的<111>取向晶粒比<100>晶粒存储更多的GND。