Violation of the Taylor ratio in irradinated metals
https://doi.org/10.34680/2076-8052.2024.3(137).351-362
Abstract
The motion of an edge dislocation ensemble in an irradiated metal under high strain rate deformation is theoretically analyzed. Within the framework of the theory of dynamic interaction of defects (DID) an analytical expression for the dependence of the dynamic yield stress on the dislocation density is obtained. The conditions for violation of the Taylor relation under high strain rate deformation of irradiated metal are determined. The resulting dependence on the dislocation density is nonmonotonic and has a minimum. The minimum of this dependence is due to the competition between the influence of structural defects of various types on the moving dislocation ensemble. It occurs during the transition from the dominance of drag by dislocation loops to the dominance of drag by immobile dislocations.
About the Author
V. V. Malashenko
Galkin Donetsk Institute for Physics and Engineering
Russian Federation
Russian Federation
Donetsk
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Review
For citations:
Malashenko V.V. Violation of the Taylor ratio in irradinated metals. Title in english. 2024;(3(137)):351-362. (In Russ.) https://doi.org/10.34680/2076-8052.2024.3(137).351-362
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