In Situ TEM Observation of Toughening Mechanisms in Ultra-fine Grained Columnar Aluminum Thin Films

Overall Fracture Dynamics

Disassociation of a Bend Contour due to Dislocation Activity

Microcrack Formation

Crack Blunting (speed up 5x)

Fracture Parallel to Tensile Axis

Crack Bypass Mechanism of a Large Grain with possible Deformation Twin