Methods have been developed to ensure high mechanical properties during plastic forming of structures of a new welding alloy of the Al - Mg- Transition Metals - Rare earth elements system for aerospace engineering. A two-stage approach to deformation has been developed, when at the first stage deformation is performed under conditions of large shear deformations for a more uniform redistribution of phase components and a decrease in the size of the grains - homogenization of the material due to mechanical action, and at the second stage - the formation of the structure.
The fundamentals of non-trivial additive technologies of 3D-printing and cold spraying (CS) for the manufacture of complex-shaped products from cermet and ceramic composites, as well as from multicomponent metal alloys, which are fundamentally different from existing analogs of costly foundry methods ensure the level of material properties required for their operation at temperatures above 600 °C, under conditions of high-speed multiple heating-cooling (1500 deg/min), cyclic loading and in an aggressive oxidizing environment.
In this work, using a unified theoretical approach, the analysis of the processes of visco-plastic forming of typical mechanical engineering structures with homogeneous and structurally heterogeneous materials. The theoretical approach is based on a closed system of equations of the theory of plastic flow of continuum mechanics, taking into account the visco-plastic properties of materials. This approach made it possible to provide system design of structural forming processes.
For the first time physical representations and theoretical assumptions about the regularities of the influence of quasi-hydrostatic compression, as the most stringent conditions of deformation, on the composition, phase transformations, structure, strength and plastic properties of crystalline metal-like and quasicrystalline metal phases, including titanium hydride with a high hydrogen content and Al-Fe-Cr alloy with finely dispersed particles of quasicrystalline phases.
Performed a comprehensive study of the casting, mechanical and special properties of heat-resistant and wear-resistant iron-based alloys in a wide range of chromium concentration, manganese, aluminum, carbon, titanium, and so on, are designed latest heat-resistant and wear-resistant alloys, depending on the specific operating conditions of the cast parts in extreme conditions . It created a database covering more than 600 brands of iron-based alloys, ferro alloys and all existing brands of steel and iron scrap.
We solve important scientific and technical challenge associated with creating the concept of complex (simultaneous) actions on the workpiece through the formation of localized deformation and the formation of the center hole with minimal post processing of removing the metal layer, and providing enhanced mechanical properties through modification material structure; development of new energy efficient technologies for parts of the central cavity of the solid components; the creation of methods of technological calculations; energy-power research and computer modeling developed processes an