Decomposition of supersaturated solid solution in the ternary alloy Mg-Nd-Y

Precipitation kinetics and structural transformations in a magnesium base supersaturated solid solution in a ternary alloy Mg-3% Nd-8.5% Y are under study. It is shown that in comparison with binary alloys with the same neodymium and yttrium contents the precipitation of magnesium supersaturated solid solution is accompanied by a higher strengthening effect and a greater degree of depletion of magnesium solid solution. The study of the structure of a Mg-Nd-Y ternary alloy and a Mg-Nd-Y ternary state diagram suggests that specific features of kinetics and strengthening on precipitation of supersaturated solution are associated with the possibility of one of the rare earth metals to be dissolved in decomposition products of the other rare earth metal during supersaturated solid solution precipitation