Volume 9, Issue 4, December 2019

Surface hardening of specimens of 316L-type austenitic stainless steel during ion-plasma treatment strongly depends on its initial microstructure.

Today the global leaders of electronics production actively develop the technology of a non-volatile phase-change memory (PCM) based on a phase transition from a crystal to amorphous phase in nanoclusters. The main purpose of this work is a detailed study of possibility to use clusters of silver as a single bit of information in long-term memory devices, based on principle changing of phase memory of the carrier.

Dynamics of N-crowdions is analysed by the molecular dynamics method in order to find the parameters of the interatomic potential that control the crowdion's path length.

The effect of carbon and oxygen impurity atoms on the migration rate of tilt boundaries with <100> and <111> misorientation axes in fcc metals is studied by the molecular dynamics method

In the present work, two types of geometrical arrangement (C-1 and C-2) of Heusler-type Ni45Co5Mn37In13 microwires in a cooling cell are investigated theoretically.

Rod–shaped particle of Cu5Zr formed in Cu–0.21%Cr–0.20%Zr alloy after quenching and annealing at 700°C for 1 h. The particles consist of thin twin-like layers with a thickness of 6-7 nm. The ratio of atomic concentrations of copper and zirconium in this particle was 5.6 : 1 that is close to the stoichiometry of the equilibrium Cu5Zr phase

The analysis of the NEXAFS Co2p-spectra of cobalt-containing solid solutions and cobalt oxides revealed that the studied Co atoms were mainly in the +2 and +3 oxidation state, which correlates well with the magnetochemical study data.

Dependence of the maximal misorientation of the broken dislocation boundary, forming due to the interaction of the slip band front with the elastic field of wedge disclination, on the distance between the disclination and the slip band.

Presented in the figure are the stress distributions in the double-Gaussian waveguide and in a half-wave cylinder. It is shown that the double-Gaussian waveguide allows increasing the area of uniform distribution of the amplitude of normal stresses in a significant region.

A quantitative model is presented to describe the kinetics of grain growth in complexly alloyed austenite. The average relative error in calculating grain size is about 11% that is comparable to the measurement error.

The perspective electrolyte Gd0.05Bi0.15Mn0.05Ce0.75O2 has the conductivity of 8·10-3 S/cm.

Diamond-like polycyclobutane phases can be formed under uniaxial compression of graphite.

The diagram of the distribution of the first principal strain when φ = 60°, pmax = 4 MPa and holding time 3000 s.

Thin aluminum film on the iron substrate at temperatures of 300 K and 1173 K.

In the present paper, the microstructure and fracture resistance characteristics of 7-layered composites based on low carbon low alloyed steel 09G2S and maraging steel EP678, obtained by two different methods: explosion welding and hot pack rolling with subsequent heat treatment were investigated.

The nature of the processes controlling the changes in the structure and hardness of nickel depending on the number of cycles of electric pulse treatment is discussed.

The paper presents the results of structure and texture investigation of thin magnesium foils obtained by rolling at low temperatures.

Сomputer simulation of the friction stir welding (FSW) of aluminum alloy sheet blanks

An anisotropy of the tensile mechanical properties of a billet of austenitic Fe-18Cr-9Ni-0.08C steel produced by the method of wire-feed electron-beam printing was investigated. It was experimentally shown that after additive growth, samples of austenitic steel, which were cut from different parts of the steel billet and differently oriented with respect to the direction of growth, possess the significant anisotropy of mechanical properties under uniaxial tension.

The first part of the picture illustrates three dimension types of the γ' phase after TMT and ageing. The second part is the EBSD orientation map showing recrystallized structure after TMT and ageing.

High-temperature annealing of the laser clad NiCrBSi coating forms framework structures of large chromium carbides borides with improved hardness and wear resistance in conditions of external and frictional heating up to 1000 °C.

α-Li0.5Fe2.5O4 and β-Li0.5Fe2.5O4 were obtained under solution combustion conditions.

Microstructure of Inconel 718 manufactured by SLM and subjected to heat treatment

A decrease in the cooling/heating rate increased the temperatures of the forward martensitic transformation. This is caused by the realisation of the forward transformation under isothermal conditions.

Зависимости истинного напряжения от истинной деформации никелевого сплава, полученные в результате испытаний на сжатие и микроструктура (BSE) выделений γ′ фазы с мелкими карбидами.

The proposed and studied method of continuous alternating deformation by bending of workpieces around a rotating roller, aimed at hardening long axisymmetric workpieces with a slight change in their cross-section.

3D view of the GS configuration of the surface magnetic layer. We can observe a clear 3D skyrmion crystal structure in the whole magnetic layers, not only near the interface layer. Unlike the case where we do not take into account the interaction between NNN, in the present case where the frustration is very strong we see that a large number of skyrmions are distributed over the whole magnetic layers with a certain periodicity close to a perfect crystal.

In the alloy containing the LPSO phase, using the acoustic emission method, it was possible to identify and trace the kinetics of the development of three simultaneously occurring accommodative deformation mechanisms: basic dislocation slip, nucleation and growth of discharge bands.