The study covers the sorption of copper ions from standardized test solutions (1–100 mg/dm3 Cu) at pH = 5,5÷9,5 and waste waters (composition, mg/dm3 : 0,2–0,4 Cu; 0,2–0,3 Zn; 0,3–0,4 Ni; 0,3–0,5 Fe; 0,6–0,9 Pb; 1,8 As; 0,2 Mn; 3,2 Mg) at pH = 8,5 on a modified Na-montmorillonite from the Zyryanovskoe field in comparison to the liming method. Significant sorption capacity of superfine aluminosilicates (~3,0 mg-eq/g) allows to obtain sediment rich in heavy non-ferrous metal ions suitable for further recuperation of metals from sediment and purified water with residual concentrations of metals (Cu < 0,01 mg/dm3 ) compliant to emission standards.

The applicability of waste metal formed in the manufacture of single-crystal permanent magnets of UNDKT5AA alloy is studied. Since this waste accumulates detrimental impurities, it cannot be re-used in the production. Additional cleaning of initial melting stock with solid oxidants was applied to prevent alloy contamination with impurities. An example was provided for calculating a required solid oxidant volume. The material of graphite intermediate ladle in contact with melt was replaced with pure alumina. Waste metal formed afterwards featured a reduced content of detrimental impurities. Such waste materials were used as a melting stock component in the production of single-crystal permanent magnets. All magnets met quality requirements, while the cost of production dropped by more than 30 %.

The computer analysis was made to evaluate the stress state of a workpiece and an axisymmetrically positioned tool at the stage of steady drawing process of PtNi equiatomic alloy using finite-element method in the DEFORM-2D software environment. The diamond tool geometry is proposed to reduce hardness and weight without changing basic process parameters.

The paper presents the results obtained when solving the problem consisting in determination of the combined extrolling process implementation. The components of a total capacity for the process studied were written in analytical form, their calculation and analysis of the effect of specific factors on implementation of the combined extrolling process was made on PC using a specially developed program. A quantitative evaluation of the process feasibility was made using safety factor as a major criterion for the conditions of aluminum alloy combined extrolling at the pilot combined processing plant.

The study reviews an experimental and theoretical method of residual stress detection in metal strips made of zirconium alloys showing transversely isotropic properties after cold rolling. Research results demonstrate significant transverse and longitudinal residual tensile stresses appearing on a strip surface. The nature of their distribution is qualitatively consistent with known patterns of distribution of these values during rolling process.

The effect of titanium alloy mechanical anisotropy on the performance of gas turbine engine (GTE) ring-shaped parts was analyzed with account for their production cycle. Necessary dependencies were provided for transverse strain identification when assessing anisotropy during forming. It was found that both transversal strain coefficients and metal strength increase during the forming process (forging and rolling). In addition, the rolling process facilitates the transversal isotropy occurrence in the ring material. The stress state in a hollow homogenous cylinder under internal and external pressures was examined to evaluate the effect of transverse strain coefficients on the structure functionality. This scheme describes operating conditions of GTE compressor disks spacer with a reasonable degree of certainty while ignoring axial loads. The analysis showed that the allowable internal pressure taken by the spacer increases with the increase of transverse strain coefficients.

The study reviews forms and methods of discretely reinforced aluminum matrix composites (AMCs) production which cannot be widely applied due to a number of unresolved problems, such as high cost of both reinforcing elements and the entire process of composites production; level of strength properties is not always sufficient especially at high temperatures; uneven distribution of reinforcing particles throughout aluminum matrix, insufficient strength of their bonding with the matrix. The use of in situ processes and their potential contribution to the solution of these problems is discussed including SHS process for the production of cast nanostructured AMCs. A specific example of Al–10%TiC composite discretely reinforced with nanosized titanium carbide particles illustrates this in detail.

An integrated process for producing electrodes of TiAl-based powder alloy is proposed with the following stages: powder alloy production by hydride-calcium recovery, powder treatment in a carbide ball mill with Y2O3 added as a structure modifier, workpiece hydrostatic molding and sintering. Experimental samples were used to study molding and sintering processes and examine alloy microstructure at all stages of the processing chain. An electrode for plasma centrifugal disintegration of granules was produced using this technology.

The paper studies a remelt temperature effect on the structural heredity of an alloy produced by centrifugal SHS metallurgy methods. An example of intermetallic NiAl grade highly alloyed with boron demonstrates that the alloy superheat temperature over 100 °C (from tmelt) during vacuum induction remelting causes a substantial enlargement of SHS alloy structural components and occurrence of segregations. All test samples of the alloy had a composite structure consisting of a substitutional solid solution NiAl matrix, reticular inclusions of τ-boride (Ni20Al3B6) and dispersion discharge of complex boride (Mo, Cr)B.

A significant effect on heat transfer during copper fire refining in a ladle furnace is caused not only by forming and motion of gas bubbles in a melt, but also by the volume content of gas bubbles. The presented mathematical model analyzes the effect of melt gas fullness during blowing and gas temperature under the cover on an average temperature of the melt being refined.