Influence of conditions of melt cooling upon structure formation and phase composition in ingots of $\mathrm{Al_2O_3}$–$\mathrm{ZrO_2}$

The article presents the results of research of regularities in macro- and microstructure formation of ingots of alloys ($75$ mass $\%$ $\mathrm{Al_2O_3}$–$25$ mass $\%$ $\mathrm{ZrO_2}$) and their phase composition depending on the conditions of heat removal from different volumes of crystallizing melts. The dependence of structure, phase composition and strength of particles (as part of close-cut fraction ($1250 \leqslant d\leqslant1600$) micrometer) obtained while grinding the ingots upon the conditions of heat removal while crystallizing the melt in different volumes and conditions of cooling.