Kotlyar S.M.

The Structure and Mechanical Properties of Al-6 % Mg-2 % Zn-0,5 % Fe-0,5 % Alloys with Additions of Manganese after Different Modes of Annealing

This paper discusses the influence of up to 0,7 percent of manganese and various modes of annealing on the phase composition, the structure and a level of mechanical properties of Al-6 % Mg-2 % Zn-0,5 % Fe-0,5 % Si alloy. More compact (Fe, Mn)Al6 phase is formed instead of FeAl3 phase at Mn/Fe = (0,4–0,5) optimal correlation. Thus alloy plasticity rises by 40–50 % at the insignificant increase of durability.

Mechanical Properties of Casting Alloys of Al–Mg System after Natural Senescence

We investigate the influence of natural senescence on mechanical properties of АМг5К, АМг6л and АМг10 alloys. We determine that the level of temporal resistance of the break rises to 15 % and 5 %, and the lengthening of alloys rises to 40 % and 10 % for АМг5К and АМг6л alloys after the natural senescence in the course of three years. Accordingly, the level of temporal resistance of the break of АМг10 alloy rises to 3 % and the relative lengthening falls to 70 % after the natural senescence in the course of three years.

Phase-structural composition and mechanical properties of alloy of CA4Мg with admixtures of iron and beryllium

The paper under consideration investigates the influence of beryllium on the phase-structural composition and the mechanical properties of CA4Мg alloy containing 0,5 percent of iron. The set optimum beryllium alloy content provides the formation of a more compact iron-bearing phase and the increase in the mechanical properties level.