Research Laboratory «Hybrid Nanostructured Materials»

• We have conducted quantitative computations of mechanical behavior of hybrid structures in topological self-engaged blocks allowing to optimize geometry of blocks using quantitative methods.
• We have conducted mechanical tests of hybrid structures of different types for stretching, bending and fatigue, determined corresponding mechanical characteristics.
• Our researchers have studied mechanisms and kinetics of destruction of hybrid structures of different types during mechanical tests. We have demonstrated possibility of producing adaptive hybrid structures that change their carrying capacity strength under external impacts. We have shown possibility of usage of biomimetical methods in application to self-engaged hybrid structures and producing unique combinations of strength and bending flexibility of fragile materials. Developed principles of topological self-engagement are suitable for creating hybrid materials allowing to mix heterogeneous often incompatible in any proportions into joint structures.
• Using methods of intense plastic deformation (IPD) we have obtained experimental samples of materials with enhanced mechanical and biocorrosion qualities for temporary (bioresorbable) implants made of various prospective magnesium alloys. Using IPD methods we have also produced samples based on copper alloys (Cu-Cr, Cu-Zr, Cu–Hf, Cu-Cr-Zr and Cu-Cr-Hf) as a model basis for new hybrid and composite materials and their usage in future devices.
• Our team have conducted comparative analysis of processing of copper using four different IPD methods. On the basis of this analysis we have made a comparative assessment. We have found that methods of equal channel angular extrusion and multi-axis deformation are the most promising and technologically advanced.
• We have developed a method for processing low-doped copper alloys Cu-Cr for producing items with the best combination of mechanical and electrical qualities. This allows to use Cu-Cr system alloys as conductive materials in various fields of electrons in particular in the settings with high temperatures and mechanical loads.
• The Laboratory has conducted theoretical works for creating hybrid structures with spiral-shaped reinforcement using IPD methods. We have shown possibility of using methods of deformation by torsion under high pressure for connecting layers made of heterogeneous metallic materials (steel and vanadium alloy as well as steel and zirconium alloy) to produce hybrid multi-layer material with ultra-low-granular (nano- and submicroncrystalline) structure.
• The laboratory has studied heat-resistant vanadium alloys protected against high temperature corrosion by steel coatings. We have conducted mathematical modeling of mechanical behavior of such three-layer hybrid structures using the method of finite structures. Optimal parameters have been determined for processing to obtain samples from three-layer hybrid materials.
• We have produced experimental samples of zirconium alloys E110, E125 and E635 with enhanced strength characteristics (materials have been produced using different modes of IPD). On the basis of obtained data we have determined modes of IPD that are better suited for improving strength of studied zirconium alloys. It has been shown that processing the E125 alloy using IPD significantly improves its mechanical qualities without reducing endurance against corrosion.
• Our researchers have studied functional physical processes accompanying IPD of alloys including breaking down grains, changing the structure of precipitates, phase transition etc.

Education and career development:

• We have created and implemented 7 lecture courses: «Introduction to finite elements and ABAQUS modeling», «Physical materials science», «Physics of defects in solid bodies», «Heat-resisting and radiation-resistant materials», «Metallic nanomaterials for medicine», «Developing and implementation of new materials», «Methods of solving engineering problems».
• We have conducted a series of lectures within a career enhancement course for employees of other organizations «Managing intellectual property: basics for engineers».
• We have developed three 3 textbooks: «Vanadium alloys: heat-resistant and radiation-resistant materials» (T. A. Nechaykina), «Patent research. Analysis of patent situation» (A. B. Rozhnov, V. Yu. Turilina), «Metallic nanomaterials for medicine» (S. O. Rogahyov).

Collaborations:

• Center for Prospective Hybrid Materials of the Monash University (Australia): joint research and postgraduates exchange
• A. A. Baykov Institute of Materials Science of the Russian Academy of Sciences(Russia): joint research