On the theory of the nucleation of gas bubbles at grain boundaries and incoherent inclusions
Source abstract
Abstract
On the base of the critical analysis of two-dimensional models of the nucleation of gas filled bubbles at grain boundaries of helium-implanted specimens under the action of tensile stresses, a new model is developed within the framework of the Reiss theory of homogeneous nucleation in binary systems. This approach considers that gas bubbles are formed as a result of agglomeration in a binary system of vacancies and gas atoms at grain boundaries, avoiding significant simplifications of previous models based on the classical nucleation theory for single-component (unary) systems. The new model is extended to consider the nucleation of Xe bubbles at grain boundaries in UO 2 under irradiation conditions and can be used for numerical analysis of experimental observations after the foreseen implementation in a fuel performance code. A similar approach can be applied to the nucleation and growth of gas bubbles on incoherent inclusions, such as those observed in irradiated ODS steels.
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Research context
OpenAlex topics: Metallurgical Processes and Thermodynamics · Particle Dynamics in Fluid Flows · nanoparticles nucleation surface interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (75)
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