Dislocation loop growth during different types of irradiation and thermal annealing. ... resulting in the quick loop growth … A detailed analysis is given on the energetics of bubble growth in a solid by prismatic loop punching. into a partial dislocation loop (with stacking fault) (b) and its transformation into a complete dislocation loop (without stacking fault) (c). such as oxygen vacancies exists during film growth. The proposition is that dislocation emission from the void surface under load is a viable mechanism for void growth. Key words: irradiation, zirconium alloys, point defects, dislocation loops, growth strain 1. Based on the loop growth rates at different temperatures, Arrhenius plots for different irradiation conditions were obtained to estimate the E mv (see Fig. STP955 Interstitial Dislocation Loop Nucleation and Growth and Swelling Produced By High-Energy Cascades Fig. A typical example is the dislocation configurations in thin BaTiO3 films grown ons001d SrTiO3. Interactions between the bubble and the dislocation loop are included as well as the effect of the loop proximity on the actual bubble volume. To understand void growth in the absence of diffusive effects, the interstitial-loop emission mechanism under tensile hydrostatic stress is investigated. As a result, a high density of dislocation half-loops and inclined threading dislocations may exist in such thin films. … Glide was ac- complished by the growth of the loop in its glide plane. From the dynamics behavior of the dislocation loop, the migration process can be analyzed and the corresponding mechanism is able to be explored. Yang Z(1), Sakaguchi N, Watanabe S, Kawai M. Author information: (1)Centre for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, N13, … A generalized model to study dislocation loops growth in irradiated binary Zr-based alloys is presented. 3(a) shows the loop growth rates obtained under different irradiation conditions at 780K. ¾edge dislocations tend to be more mobile than screw ones, e.g., a = b, K = 2/3 (edge): τ P ≈1.2 ×10-4 G a = b, K = 1 (screw): τ P ≈1.9 ×10-3 G ¾Peierls energy landscape defines special low core energy directions in which the dislocation prefers to lie ¾if dislocation is unable to lie in one minima of the Peierls It takes into account temperature effects, efficiencies of loops to absorb point defects dependent on the loop size, an influence of locality of grain boundary sink strength, and concentration of the alloying element. After a further growth by precipitation of vacancies, this partial dislocation loop may change 3(b) ). of edge portions of a dislocation loop, showing the bent lattice planes resulting from the near-core strain field, and a schematic view of a dislocation loop on a glide plane, im- plicitly including edge and screw portions. Dislocation loop formation and growth under in situ laser and/or electron irradiation. loop with the Burgers vector (113) [l 1 l] enclosing a stacking fault. element decreases the loop radii but promotes the growth of local strains inside the grains.