AbstractThis investigation reports three damping peaks in V caused by dislocation motion constrained by several types of atmospheres. Deformed wires of pure V showed a well‐known damping peak called the α‐peak. This peak is presumed to be caused by depinning of dislocations by an oscillatory stress. Increases in immobile oxygen or nitrogen atoms gradually suppress the peak. Hydrogen, which forms a mobile atmosphere, produces two additional peaks of the Snoek‐Köster type. These latter peaks can result from either externally imposed deformation or from internal deformation produced by misfit of precipitated h