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Titolo:
CRITICAL PARAMETERS CONTROLLING IRRADIATION SWELLING IN BERYLLIUM
Autore:
DUBINKO VI; BARABASH VR;
Indirizzi:
KHARKOV PHYS & TECHNOL INST KHARKOV 310108 UKRAINE DV EFREMOV ELECTROPHYS APPARATUS INST ST PETERSBURG 189631 RUSSIA
Titolo Testata:
Journal of nuclear materials
, volume: 225, anno: 1995,
pagine: 22 - 25
SICI:
0022-3115(1995)225:<22:CPCISI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
V.I. Dubinko e V.R. Barabash, "CRITICAL PARAMETERS CONTROLLING IRRADIATION SWELLING IN BERYLLIUM", Journal of nuclear materials, 225, 1995, pp. 22-25

Abstract

Radiation effects in beryllium can hardly be explained within a framework of the conventional theory based on the bias concept due to elastic interaction difference (EID) between vacancies and self-interstitial atoms (SIAs) since beryllium belongs to hexagonal close-packed metals where diffusion has been shown to be anisotropic. Diffusional anisotropy difference (DAD) between point defects changes the cavity bias for their absorption and leads to dependence of the dislocation bias on the distribution of dislocations over crystallographic directions. On the other hand, the elastic interaction between point defects and cavities gives rise to the size and gas pressure dependencies of the cavity bias, resulting in new critical quantities for bubble-void transition effects at low temperature irradiation. In the present paper, we develop the concept of the critical parameters controlling irradiation swelling with account of both DAD and EID, and take care of thermal effects as well since they are of major importance for beryllium which hasan anomalously low self-diffusion activation energy. Experimental data on beryllium swelling are analyzed on the basis of the present theory.

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Documento generato il 04/07/20 alle ore 05:31:01