Abstract
This study examined the deformation behavior and fatigue crack initiation of a carbon-steel film under cyclic shear loading. As a result, two relations about fatigue behavior were found. Observations indicate that the occurrence of the slip ratio is not inline content of the pearlite and grain size,can be evaluated by the ratio of grain size and thickness of the thin film. On the other hand, generating of a crack has the great influence of pearlite content.
