Abstract
Abstract Since the Bragg bubble model continues to be a powerful tool for modelling interatomic binding and inelastic processes in close-packed metals with particularly attractive applications to the mechanism of plastic flow in metallic glasses, the inter-bubble potential previously developed by Nicolson and Lomer has been generalized to cover interactions between bubbles of unequal size. Fitting the binding energy between pairs of bubbles to the ab initio potential of a close-packed metal such as copper gives good superposition in the trough region of equilibrium and at the inflection point as well. Measurements of Young's moduli and biaxial cohesive strain in perfect rafts and uniaxial cohesive strain between pairs of bubbles of different size are in good agreement with predictions made from the generalized bubble potential and force law.
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