EFFECT OF SCANDIUM, TRANSITION METALS, AND ADMIXTURES ON STRENGTHENING OF ALUMINUM ALLOYS DUE TO DECOMPOSITION OF THE SOLID SOLUTION

摘要

Strengthening of aluminum alloys of the Al - Sc system in ingots due to decomposition of the solid solution of scandium in aluminum is studied as a function of the content of scandium (varied from 0.14 to 0.55 percent), of the presence of Zr, Ti, Hf, V, and Co additives at the same content of scandium (0.2 percent), of the Sc/Zr proportion at the same total content of Sc + Zr, and as a function of iron and silicon admixtures.