Том 14, Выпуск 1, Апрель 2024

Ti-based metallic porous structures with adjustable mechanical performance developed by computer-assisted design and produced by laser powder bed fusion to engineer advanced bioactive implants for orthopedic applications.

Artificially created materials - metamaterials, with a specially selected structure during the deformation process correspond to the behavior of structures. Metamaterials have unusual properties: additional degrees of freedom, negative Poisson's ratio.

Change in microhardness depending on the initial microstructure and processing (thermal cycling and annealings)

Joining of thin-walled tubes with plugs of ferritic-martensitic steels was carried out by magnetic pulse welding. The presence of molten layer on the joint interface depended on the materials and the impact conditions.

Mechanical alloying of elemental powders and subsequent thermal treatment were applied to synthesize Ti6Co16Si7- and Ti6Ni16Si7- based composites.

Dependence of the film active resistance on the uniaxial pressure Р. СSAS·HBr=3·10-3 mol/l in the mixed SAS·HBr+KBr inhibitor. The adsorption time is 3 days. f=1 kHz.

This work shows the influence of the degree of severe deformation on the morphological features of α-phase particles in aged metastable β-titanium alloy Ti-15Mo.

The initial structure used for atomistic simulations of USW of copper. Surface layers with constraints are shown in blue color, thermostats in yellow, and layers with free atoms in turquoise blue.

The annealing at 700 °C for 50 h leads to noticeable changes of the carbide subsystem of low-activation high manganese austenitic steel. After solution treatment (ST) it causes precipitation of M23C6 particles along the grain boundaries and on the MC particles. Annealing of the cold-rolled (CR) samples leads to the formation of these particles at the microtwin boundaries.

There is an increase in coalescence efficiency with increasing droplet concentration. This is due to the fact that an increase in the concentration of drops leads to a decrease in the distribution of the distance between the drops of the emulsion, which favorably affects the process of convergence of the drops.

Figure shows experimental data on particle growth during isothermal annealing at 1300 °C as a time dependence of the average particle volume. For particles located at different distances from the sample surface, these dependences are approximated by straight lines with close angular coefficients (curves 1 and 2).

The powder morphology, phase composition and microstructure were thoroughly investigated. The temperature ranges of phase transformations in the powder during heating and cooling have been established

Chemically controlled size distribution of point defect clusters generated by single displacement cascades determines amount and sizes of radiation defects under prolonged irradiation of materials

The effect of laser thermal action on metal grains in 316L alloy obtained by supersonic laser deposition have been investigated. The treat by laser provide growth metal grains by diffusion. The results of experimental studies correlate with the results of process modeling.

Grain boundary sliding caused the grain boundary region to thicken and the grain boundary structure was disordered. This resulted in the increased mobility of Zn atoms in this region and the formation of a segregation layer in the center of the grain boundary.

Disk-shaped nickel plates processed by high pressure torsion were successfully joined by ultrasonic welding. Welding resulted in the grain growth which is uneven along the cross-sectional height of the welded specimen. The specimens showed a gradient microstructure with a grain size ranging from 3 μm in the lower plate to 6 μm in the upper one, along with a developed substructure, after the process of USW.