Dislocation density in fine grain-size spark-plasma sintered aluminum measured using high brightness synchrotron radiation

•GND density calculated based on 3D synchrotron data with 0.01° angular resolution.•As-sintered fine grain-size samples are in a predominantly recrystallized condition.•Estimation of GND strength contribution supports dislocation-source hardening model. Three-dimensional orientation mapping of sampl...

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