Volume 13, Issue 3, September 2023

The inflection point on the dependence of the median frequency of acoustic emission on strain as an evidence of the intensification of the dynamic recovery process

The structure and properties of AISI 321 steel depends on the level of normal load on the indenter during frictional treatment. Friction treatment with a sliding indenter leads to the formation of a gradient structure with a depth of up to 500 µm.

The effects of heat input magnitude and adjustment on microstructure and mechanical characteristics of Al-5%Si and Al-12%Si alloys prepared using electron bean wire feed (EBAM ) and wire-arc additive manufacturing (WAAM) have been investigated.

Observed microstructure changes caused by loading mainly concern in the development of persistent slip bands. Acoustic birefringence decreases linearly with cycles under fatigue and increases monotonically with plastic strain under tension.

mechanical properties of thim films obtained by nanoindentation

Trial points uniformly distributed over the upper hemisphere are stereographically projected on the plane of pole figures.

The paper describes the two-stage modification of the surface layer of Al-20%Si alloy that combines electroexplosive alloying by an Al-Y2O3 system with subsequent irradiation by pulsed electron beam. Study of the structure and properties of the modified layers of the material under study by the methods of modern physical materials science.

The microstructure of samples that were formed after mill processing has differences from the structure of samples that were formed after the charge mixing in the form of a noticeable grinding of the excess ɛ-phase, increased chromium content both in the α-solid solution and excess ɛ-phase (by 34%), as well as crushing of metallic chromium inclusions.

The impulse load wave pattern of the planar target with the simple shaped long-length impactor as a two-dimensional bar is presented. Needle-like spall fracture occurs under shock loading of the target surface with spherical particles.

New high energy density material azidofullerene C60N60

Nanoporous germanium surface formed by magnetron sputtering and ion implantation

Searching for the optimal thermal cycling temperature range of the NiTi alloys, which would provide the most stable actuator performance.

Average grain size and tensile strength of nanostructured Invar alloy (36N) as the function of annealing temperature in different structural states. SEM images of the microstructure of the 36N alloy in the nanostructured state state and after hourly annealing.

Increased fatigue resistance of grade 4 titanium as a result of complex processing, including the formation of an UFG structure and non-abrasive ultrasonic finishing of surface

The effects of the heat treatment regime on the fatigue strength and frequency stability of samples made of martensitic-aging steel 03Ni18CoMo5Ti-EBR were investigated. The tests were carried out on an original electromagnetic installation operating in self-oscillating mode during cyclic tests using a "soft" cantilever bending scheme of flat samples.

Dependence of the crack shape (length/height ratio) for three-layer material with layers having different strength.