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Information × Registration Number 0224U032608, (0123U103378) , R & D reports Title Durability Enhancement of Aircraft Metal Materials: Formation of Structural-Phase States and Physical-Mechanical Properties as Affected by the Solid-Solution, Dispersion and Work Hardenings, and Surface Finishing popup.stage_title Механізми зміц-нення та оптима-льні режими тер-момеханічного оброблення та модифікування поверхні задля підвищення ви-тривалості авіа-ційних сплавів на основі нікелю та алюмінію Head Mordiuk Bohdan M., д.ф.-м.н. Registration Date 26-11-2024 Organization Institute of Metal Physics. G.V. Kurdyumov of the National Academy of Sciences of Ukraine popup.description1 Establishing the relationship between the structure-phase state in the volume and in the surface layers of the products made of Ni- or Al-based aviation alloys and their physical-mechanical properties; development on this basis of physical principles for new combined methods of their thermomechanical and surface treatments, which provide the effective synergy of various strengthening mechanisms, the enhanced strength, plasticity, oxidation/wear resistance, and durability of the aircraft parts. popup.description2 Report (final) on the research: 112 p., 63 fig., 16 tables, 33 refs. The objects of the study are samples of aviation alloys based on nickel (3D-printed Inconel 718, EI-689) and aluminium (6013, 6060), including Ni–Al (Al–Mg), (super)structures of type L12 (Ni3Al or Al3Ni), L10 (Ni2Al2) and B2 (NiAl). The aim of the work is to investigate the surface morphology, microstructure, phase composition, strengthening mechanisms, elastic and mechanical properties of aviation alloys based on Ni(Al) after thermomechanical treatment (TMT) and deformation modification of the surface. Statistical-thermodynamic models of ordered (super)structures based on Ni(Al) were constructed. The results were obtained using experimental data on (diffuse) scattering of various types of waves (X-rays, thermal neutrons, conduction electrons) to study interactions and elementary acts of atomic migration, determine macroscopic characteristics of diffusion and thermodynamic properties. Molecular dynamic modelling of the deformation of the FCC lattice of Ni(Al) orientations with spherical inclusions under tension / compression, which forms mainly point defects (010), or Shockley dislocations (110), was carried out. Changes in the structure, texture and mechanical properties of Ni(Al) alloys and their anisotropy after TMT were analysed by ultrasonic measurements and microscopy. The most effective are shot peening and HFMI treatments, which lead to a decrease in roughness, porosity and strain hardening of surface layers, an increase in elastic anisotropy, the formation of crystallographic texture (<100>), nanoscale (20–150 nm) grain structures and compressive stresses, which contributes to resistance to corrosion, high-temperature oxidation and wear. The optimal sequence of TMO should be chosen depending on the required properties and operating conditions of the products, because it determines the action of various strengthening mechanisms (solid solution, dislocation, dispersion, texture). Product Description popup.authors Halkina Anastasiia A. Hatsenko Oleksandr S. Danyleiko Oleksandr O. Zahorulko Iryna V. Zakiiev Vadym I. Zaporozhets Oleh I. Lesyk Dmytro A. Mykhailovskyi Vladyslav A. Molebnyi Oleh A. Monastyrska Tetiana O. Naumuk Artem Yu. Radchenko Taras M. Solomenko Anastasiia H. Oleksandr O. Stasiuk Valentyn A. Tatarenko Tyshchenko Andrii I. Khripta Nataliia I. Shyvaniuk Vladyslav M. popup.nrat_date 2024-11-26 Close