ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The influence of the superconducting transition on the creep of lead, indium, tin, and thallium was studied. It is shown that the transition to the superconducting state was accompanied by the jump-like creep-rate increase (sharp jump of the deformation creep curve). The jump of the deformation creep curve is indirectly dependent on the stress at which the metal transition from the normal (N) into the superconducting (S) state occurs and is observed when reaching some threshold value of the flow stress which differs for various metals. The regularities of the above phenomenon were investigated at transient and constant-strain creep rate. The time law of the creep in the N and S states and the character of the temperature dependence of the observed effect were determined. It is demonstrated that previously known experimental data and those described in the present paper can be explained without contradiction if they are interpreted in terms of the dynamic drag of dislocations, from the viewpoint of the disappearance of the force of their interaction with the conduction electrons during the N → S transition, as well as the increase of the number of movable dislocations in the course of this transition.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00628280
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