抄録
The transient behaviour of creep strain, which appeared on partial removal of applied stress at the stage of secondary creep, was studied. The strain rate immediately after partial reduction in stress was found smaller than the steady creep rate, at which the material was expected to creep under the reduced stress, and then gradually increased and reached the expected value. It was also found that this behaviour was well interpreted on the basis of the theory of creep deformation, which had been proposed by the present authors.
