Volume 9, Issue 2, May 2019

Bi-structure appearance in strained carbon chains as a result of a hard type bifurcation

The use of a hybrid deformation processing scheme combining warm equal-channel angular pressing and cold rotary swaging allows achieving static and fatigue strength values for the ZX40 magnesium alloy

Distribution of atoms in the tilt grain boundary (GB) area for NiTi bi-crystal without GB segregation and for materials having segregations of Ti or Ni atoms.

Frenkel pair time evolution in the displacement cascade with PKA energy equals 40 keV. (A video of visualizing Frenkel pairs during the displacement cascade is available on Youtube https://www.youtube.com/watch?v=sQ6rgZj9JF0 )

In the work, on the basis of quantum-chemical calculations from first principles, the study of dimensional polytypism and structure-dependent properties of low-dimensional silicon carbide (SiC), obtained on the basis of SiC monolayers with a stoichiometric composition of 1:1, was carried out.

Crack growth propagation change upon due to contact with the SrAl12O19 platelets

The figure shows a modified matrix with piercing threads, on the basis of which a 3D structure is formed.

Ti-Al, Ti-Al-Si-C and Ti-Al-B-C coatings were formed on titanium alloy Ti6Al4V by a new method of electrospark deposition from granules. The coating deposited from granules Ti3Al with 15 weight.% additive SiC increases the heat resistance of the titanium alloy by 2.3 times and the wear resistance of one by 38 times.

There is a sequence of structural transformations of the characteristic structural elements of the GB and the adjacent grain lattice which provide the migration of the GB.

Angular Poisson's ratio on the inner surface of chiral tube from CsH2PO4 crystal

The interaction of impurity atoms of light elements with self-interstitials in metals with fcc lattice is studied by the molecular dynamics method

The figure shows the scheme of investigations

An experimental study by the “method of grids” of the deformations’ degree and nature in the longitudinal and transverse sections of the pipe walls with their bending and rolling for different diameters and materials was carried out. The obtained results allow to calculate these deformations, to estimate the nature of the distribution of residual stresses and to predict the magnitude of the pipe walls’ thinning and the overall service life.

Samples with concentration of 15 % by weight of polyethylene show an extrinsic piezoresistance of the order of 17% in the range of pressure 0–270 kPa.

The closed topologically packaged phases, which appear after the long-term operation.

Calculation of compliances for a crack with contacts in a three-dimensional formulation. Stresses near contact.

Effect of addition of Ag(0.25, 0.5, 0.75, 1% by wt.) on the melting temperature, wetting characteristics, hardness and the microstructure of Sn-1Cu-1Ni is experimentally analyzed. The properties were improved on the addition of Ag and the recommended addition percentage is 1% by wt. Ag

Grains of titanium carbide with a dendritic structure, surrounded by a Ti-Cr binder, were observed in the microstructure of the coating on a titanium alloy obtained by electrospark deposition in titanium granules by using of Cr3C2 powder.

EBSD orientation map and corresponding misorientation-angle distribution for grain boundaries obtained for the superalloy after thermomechanical treatment and ageing (HABs – high-angle grain boundaries). Such microstructure was attained in the most part of the workpiece.

Geometry of the considered FLC-cell with tilted smectic layers.