Dislocation Evolution in Single Crystal Superalloys

ECCI and XR-EBSD is applied to study the grown-in dislocations at interdendritic boundaries of a nickel based single crystal superalloy and their evolution during creep.

Left: Dislocations close to an interdendritic interface (marked by arrows) as observed by ECCI. Right: Very small lattice rotations between different dendrites as observed by XR-EBSD
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