DoITPoMS

previous | next

Video clips of slip in a single cadmium crystal

The following video clips were made as a single crystal of cadmium underwent deformation in a scanning electron microscope (SEM) chamber.

A single cadmium crystal undergoing deformation in an SEM:
appearance of slip steps as slip begins on a previously
undeformed crystal

A single cadmium crystal undergoing deformation in an SEM:
appearance of slip steps as slip begins on a previously
undeformed crystal

A single cadmium crystal undergoing deformation in the SEM:
slip proceeding on previously deformed crystal

The trace of the slip planes can be seen. Markers have been dropped onto the surface of the crystal to allow the relative movement of parts of the crystal to be clearly seen.

A single cadmium crystal undergoing deformation in the SEM: slip proceeding on previously deformed crystal

An unusually large slip step can be seen on the left-hand edge of the specimen. As slip proceeds, the slip planes rotate towards the tensile axis, but the large slip step does not increase in size.

A single cadmium crystal undergoing deformation in the SEM: the crystal fractures under tensile load

The mode of fracture is ductile tearing. Note how the angle of the fracture surfaces mimics the angle of the slip planes in the deformed crystal.


previous | next