Current issue

Effect of Extrusion Combined with ECAP and Ultrasound on the Structure and Properties of an Mg–Zn–Zr Alloy

After the first heating in an inert atmosphere, the resistance of graphene exhibits the temperature dependent carrier concentration in graphene and confirms that desorption is completed after the first heating cycle. Annealing enhances the response to O₂ and H₂O, but full recovery upon pumping is not achieved.

The graphical abstract displays an example of 2D visualization of the diffraction data, capturing the phase transformations during the annealing process.

The choice of heat treatment modes for Ni₄₄Fe₁₉Ga₂₇Co₁₀ single crystals enables either elevated MT temperatures or high thermal stability, depending on the formation/dissolution of the ω-phase.

Finite element model of a ring tensile specimen with embedded hydride platelets of different orientations: applied loading scheme; distributions of equivalent plastic strain in the α-Zr matrix for hydride orientation factors (Fn = 0, 0.5, 1); schematic representation of stress components and strain localization around tangential and radial hydrides.

The influence of TiNi particle reinforcement on the friction process of composite materials

The main mechanism oxidation of Ni-Al-Fe/WC coatings was oxygen penetration through cracks. At the same time, the volume of the material increased and the formed hematite emerged through the crack onto the surface of the coating, forming an oxide cap.

The effect of the average grain size in nanocrystalline titanium on the intensity of interdiffusion between titanium and aluminum was investigated using the molecular dynamics simulation

Heat-input level governs weld formation stability and the resulting microstructure–property response in simultaneous double-sided friction stir welding (SDS-FSW) of thick AA2219-T6

Morphology-dependent defect engineering in CeO₂: dislocation density and oxygen disorder increase with aspect ratio, but intrinsic elastic stiffness remains unchanged.

As a result of phase recrystallization of alpha-gamma-alpha, a crystallographic texture is formed in IF-steel that is practically identical to the original.

Mechanical response of ferroelectric PbTiO₃ under hydrostatic pressure is revealed through shell–core molecular dynamics simulations. Strain behavior and P–E hysteresis of PbTiO₃ are systematically analyzed under varying hydrostatic pressure conditions.

Two step MF (325 → 250°C) of alloy 1570C uniquely combines grain refinement (~1.5 μm), increased strength (YS +25 MPa), and high strain rate SP at 400°C (~1000% at >10⁻¹ s⁻¹), but with reduced thermal stability (abnormal grain growth onset at 425°C vs. >450°C after first step at 325°C). Forging at 250°C is the critical lower limit for safe deformation without β phase precipitation and reveals the dual role of enhanced stored dislocation density: beneficial for SP at 350–400°C, but detrimental at ≥450°C via abnormal grain growth

1. Zinc-containing micro-arc coatings were formed on mesh fragments for cranioplasty obtained from Ti-6Al-4V titanium alloy using 3D printing. 2. Comparative studies of the physicochemical and biological properties of coatings based on Zn-substituted hydroxyapatite, as well as on tricalcium phosphate and wollastonite in combination with zinc oxide were conducted. 3. The coating based on tricalcium phosphate and ZnO is characterized by the highest bacteriostatic effect against S.aureus and high cytocompatibility with respect to 3T3 cells.

The work provides evidence that the heterogeneous grain refinement pathway in a dispersion-strengthened Al alloy tends to reach a saturation limit under severe plastic deformation, rather than continuing indefinitely. By extending ECAP processing to a cumulative strain of e = 16, the study demonstrates that nanoscale dispersoids present in the alloy not only catalyze grain refinement by promoting strain localization, but also ultimately define its limit by pinning the dislocations and resulting boundaries - thus establishing a steady-state ultrafine-grained structure.

Formation of a stable hydrogen domain through edge adhesion of graphene layers. The efficiency of hydrogen trapping critically depends on the number of graphene layers.