Abstract
Experimental data have been obtained for the Ag-MgO system demonstrating the existence of a mean critical width L of the necks between adjacent particles. It is noted that this magnitude is related to the critical degree of deformation at fracture, ɛlfr, and to the transverse contraction of alloys with secondary particles, ψ. The screening influence exerted by large-sized particles on the void coalescence process is described. For the alloys investigated, the critical MgO particle size, capable of inducing void nucleation, has been found to lie in the range 30–50 nm.
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