Volume 9, Issue 3, August 2019

Comparison of the macroscopic and microscopic creteria of lattice instability for defect-free fcc metal.

In the present work, by the molecular dynamics method, the stability of single-layer MoS2 in the temperature range of 250-550 K was studied.

Shows the effect of friction force on energy-power parameters and deformation before fracture under lug billet in strips of aluminum alloy Al-31. The effect of fragmentation on the degree of deformation strain before breaking down and the voltage drawn under different conditions of friction between the workpiece and the cutting tool.

At the same value of strength or ductility of CG and UFG steels, steels with UFG structure (dark points) have the same or greater corrosion resistance as compared to steels with a CG structure (light points). Circular points – steel 9MnSi5, square points – C10, triangular points – C45.

The results of a study of the properties of ZnO films doped with Al from 1 to 5 % at., obtained by ion beam sputtering are presented. The films have high transparency (70-90 %) in the visible range of the spectrum and have high electrical conductivity.

The paper presents results of studying the deformation of Grade 5 alloy samples while they are heated to temperatures ranging between 900 and 1350 K at constant tensile stresses of 4.45; 6.91 and 9.36 MPa in air and argon environments.The processing of the results has allowed us to evaluate the empirical coefficients for the Grade 5 alloy in two dependences obtained earlier for the Ti-5Al and Grade 2 alloys. One dependence relates creep rate to heating temperature, tensile stress, and creep activation energy; the other one relates creep deformation onset temperature (residual creep deformation within 1 hour of holding is 0.2%) to the conventional short-term creep limit.

The structure, surface and deformation curves of the TiNi wire with Nb coating.

Features of austenitic grains growth in steel forging from a large ingot

The new method of ultrasonic impact-frictional treatment for surface hardening of structural steel.

Type of a nanosecond electromagnetic pulse [1] and examples of bismuth-209 isotope transmutation reactions.

The study of the magnetic susceptibility of iron-doped solid solutions with layered perovskite-like structure has been established the influence of atoms of the second coordination sphere on the degree of aggregation and the nature of exchange interactions in the exchange-bound clusters containing Fe(III) atoms.

Luders deformation in ultrafine low-carbon microalloyed X80 steel has been studied upon tensile testing by digital image correlation technique. Two mechanisms of Luders deformation are shown to be observed depending on the strain ageing effect.

Magnetic pulsed compaction of nanopowder followed by sintering yielded thin-walled tubular iridium articles with a crystallite size of 180 nm and a relative density of 98%.

Microstructure of 35Mg-45Zn-20Y master alloy, x1000

Stable carbon structures: "fullerene+Cn+graphene", where Cn is a linear carbon cluster, 2≤n≤5

Best magnetic hysteresis properties of Fe-27Cr-10Co-1Si-1Ti hard magnetic alloy

Schematic representation of magnetoelectric interactions at the interface between magnetic and ferroelectric layers.

Investigation of the effect of a TiO2 barrier coating deposited on carbon fibers by the sol-gel method, and heat treatment on the strength properties of the Сf/Al composite.

We have discovered new stable forms of singe bonded nitrogen structures based on zigzag nanotubes of small diameters. These structures can be used as a basis for new high energy density materials.

Mechanical crushing prior to high pressure torsion of WE43 alloy improved the microhardness to an extraordinarily high value of 1557 ± 25 MPa.