Numerical calculation of the rate of strain of interstitial solid solutions under irradiation. I. Model of radiation creep |
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Authors: | Yu S Pyatiletov A D Lopuga |
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Institution: | (1) National Nuclear Center of the Republic of Kazakhstan, 480082 Alma-Ata, Kazakhstan |
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Abstract: | A model of radiation creep of interstitial solid solutions is developed on the basis of the combined motion of dislocations,
including their glide and climb past obstacles. The obstacles considered are forest dislocations and pileups of radiation-induced
point defects. A computational formula for the rate of strain is derived which describes creep at high stresses, when the
gliding dislocations overcome some of the barriers by force, and a method is described for determining the average distance
traversed by a dislocation in the glide plane under the influence of the stress until it is stopped by barriers. The results
are compared with those of other authors. It is shown that the formula obtained for the rate of strain goes over in particular
cases to those given by the previously known SIPA, Gittus-Mansur, and glide-climb models of radiation creep.
Zh. Tekh. Fiz. 69, 64–71 (January 1999) |
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