Strain-energy model for solid solubility limits in Zr+H system

Abstract

A strain-energy model is developed to estimate the saturation solid solubility limits of hydrogen in the different phases present in Zr + H system. The model requires all the hydrogen atoms to occupy interstitial sites in a perfect parent lattice. At higher temperatures the model takes into account the reduction in the number of accessible interstitial sites brought about by thermal disorder in the parent lattice. The calculations are also extended to the Ti + H system. The model fits well with these two systems.