The stacking-fault energies of stable silver-gallium solid solutions decrease linearly with increased solute concentration and the strain required to form a cell structure increases linearly. Tetrahedral stacking-fault defects, produced during deformation, were studied in the 2% Ga alloy. A transition was noted in the distribution, the rate of production, and the maximum size of these tetrahedra at the strain at which a cell structure was first observed. However, there was no correlation between this strain and the stress vs. strain curves of the alloys.
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