Irradiation-creep during void production

Radiation Diffusion–Dislocation Creep in the Presence of Weertman Mechanism of Dislocation Multiplication

“…Let us consider the qualitative consequences in RIC and radiation mechanism on the character of the radiation defect formation under different external conditions. At low temperatures ( ( j t h -) * + 0 andb* = const) is fully determined by the third term in (8), which depends only upon the possibility of the nucleation of dislocation loops of interstitial type and the size they can reach Similar conclusion is drawn by the authors in [19], but they proceed from different assumptions. When L < 1 the value of &zda -WE (and consequently, radiation intensities) does not depend upon the temperature and dislocation density in the initial structure.…”

“…maximum void size; no the density of the dislocation sources; A ( R ) function slightly dependent upon R [lo]; W v 3 I , \ ' the power of the sources for dislocation loops and voids of the radiation type; x the reduced stress; 0 stress; k the Boltzniann constant; T temperature. This equation differs from ( 8 ) in [lo] only by 5 and the third extra term in y. which is responsible for the void formation. It is not difficult to solve it;…”

“…Let us consider the simplest case when only free vacancies and interstitials are formed (y = 0, B = 0). According to (8) RIC turns out to be zero throughout the whole temperature and stress interval. Generally speaking it is not an obvious result which contradicts the calculations according to the SIPA mechanism.…”

MD simulations to evaluate the influence of applied normal stress or deformation on defect production rate and size distribution of clusters in cascade process for pure Cu

“…The results of this study, especially the increase in the FMD by applied stress, will possibly contribute to clarify one of the micro mechanisms of irradiation effects under applied stress, namely irradiation creep [10][11][12][13] and stress-enhanced swelling [14].…”

The behaviour of materials in fast reactors

“…This mechanism was first proposed by Hesketh (19G2) and applied to the fast reactor case by Lewthwaite (1973) and Erailsford and Bullough (1973). A uniaxial stress tends to stabilize loops lying normal to the tension.…”