Crystal plasticity modeling of irradiation growth in Zircaloy-2

Patra, Anirban; Tomé, Carlos N.; Golubov, S.I.

doi:10.1080/14786435.2017.1324648

Cited by 29 publications

(50 citation statements)

References 49 publications

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“…The obtained values for loop densities relates well with experimental observations for zirconium alloys irradiated by neutrons in the reactor SIRIUS (see discussions in [43]).…”

Section: Simulation and Analysis Of The System Dynamicssupporting

confidence: 85%

“…We take into account that both line dislocations and dislocation loops climb by absorbing the point defects. The climb velocity is given by [16,43]:…”

Section: -5mentioning

confidence: 99%

“…The loop capture radii, usually, are of the corresponding value of Burgers vectors. As far as Z Bias coefficient Z n GB is taken according to the definition [20,43,56]:…”

Section: -7mentioning

confidence: 99%

“…Theoretical description of the radiation growth was developed by taking into account a diffusion anisotropy difference effect where diffusion of self-interstitials is anisotropic, whereas vacancy diffusion can be considered isotropic [34][35][36][37][38]. Cluster dynamics approach proposed in [39,40] to study the radiation growth was exploited to describe experimental data and predict a change of mechanical properties of zirconium single crystals and Zircaloy-2 under neutron irradiation [16,[41][42][43]. In models of point defect clustering one considers the kinetics of defect production with their interactions with the dislocation substructure.…”

Section: Introductionmentioning

confidence: 99%

“…It was shown that loops start to evolve from defect clusters where a net flux of defects is considered as an additional mechanism for the growth of the loops. In [43], the irradiation growth was studied in the framework of viscoplastic self-consistent crystal plasticity in Zr and its alloys. This approach is based on a response of individual grains interacting with the surrounding medium.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Dislocation loops growth and radiation growth in neutron irradiated Zr-Nb alloys: rate theory modelling

Wu¹,

Kharchenko²,

Lysenko³

et al. 2020

Condens. Matter Phys.

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A generalized model to study dislocation loops growth in irradiated binary Zr-based alloys is presented. 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. This model is used to describe the dynamics of loop radii growth in zirconium-niobium alloys under neutron irradiation at reactor conditions. A growth of both loop radii and strains is studied at different grain sizes, location from grain boundaries, and concentration of niobium. It is shown that locality of grain boundary sinks results in a non-uniform deformation of the crystal inside the grains. Additionally, an introduction of niobium as an alloying element decreases the loop radii but promotes the growth of local strains inside the grains.

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“…The obtained values for loop densities relates well with experimental observations for zirconium alloys irradiated by neutrons in the reactor SIRIUS (see discussions in [43]).…”

Section: Simulation and Analysis Of The System Dynamicssupporting

confidence: 85%

“…We take into account that both line dislocations and dislocation loops climb by absorbing the point defects. The climb velocity is given by [16,43]:…”

Section: -5mentioning

confidence: 99%

“…The loop capture radii, usually, are of the corresponding value of Burgers vectors. As far as Z Bias coefficient Z n GB is taken according to the definition [20,43,56]:…”

Section: -7mentioning

confidence: 99%