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The effect of rotary swaging on the microstructure, texture, and mechanical properties of the magnesium alloy Mg‐4.4Al‐0.9Zn‐0.4Mn is studied. Repetitive processing, conducted at progressively dropped deformation temperature (from 400 down to 200 °C), leads to an increase in the cumulative strain ε. Rotary swaging of the alloy is shown to lead to microstructure fragmentation due to intensive twinning on various crystallographic planes. A high density of twins observed at the final stage of deformation, at ε = 2.77, leads to a decrease in the distance between boundaries (including both twins and grain boundaries) to ≈3 μm. With decreasing temperature, 0.2‐μm‐wide secondary deformation twins form within the primary twins with a width in the range of 1.5–2.5 μm. The texture analysis shows that, upon deformation, the number of orientations increases as does their scatter. Rotary swaging at 350 °C to ε = 2.77 gives rise to an increase of both strength and tensile ductility of the alloy. The high strength characteristics are achieved due to the formation of a subgrain structure and profuse twinning. The increased tensile ductility is associated with the activation of prismatic slip in addition to developed basal slip.

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The results of the analysis of phase equilibria ordered phases in binary systems based on palladium Pd-Me (Me = Co, Rh, Ir, Cu, Ag, Au, Ni, Pt) are set out to search for correlations and crystal-chemical and crystal geometric factors. It is found that the packing factor in disordered solid solutions in binary systems based on Pd is close to the value of 0.74 on a background of a slight deviation from the atomic volumes Xena. It is revealed that increasing of the hydrogen permeability in Cu-Pd binary alloys correlates with significant reduction of the packing factor in B2 ordered phase in the range of 40 at.% Pd. It is found that various structural-phase states are formed in Pd-Me binary systems with certain combinations of temperature and size factors.