Influence of annealing on the character of structural-phase mismatch in single crystals of heat-resistant nickel alloys

The equipment for the production of wide range of metal powders purposed for powder metallurgy is described. The possibility for producing of powders by the plasma centrifugal spraying is considered taking into account the gas dynamic pressure. The calculated data on the powder size for different materials are given.

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Structural-phase transition in (Cu2Te)2−x(ZnTe)x at high temperature

International Journal of Modern Physics B ◽

10.1142/s0217979221501137 ◽

2021 ◽

pp. 2150113

Author(s):

H. B. Gasimov ◽

R. M. Rzayev

Keyword(s):

Phase Transition ◽

Phase Transitions ◽

High Temperature ◽

Single Crystals ◽

Structural Phase ◽

X Ray Diffraction ◽

X Ray ◽

Temperature Range ◽

Xrd Study ◽

Xrd Method

Cu2Te single crystal was grown by the Bridgman method. X-ray diffraction (XRD) study of Cu2Te single crystals in the temperature range of 293–893 K was performed and possible phase transitions in the mentioned range of temperature have been investigated. (Cu2Te)[Formula: see text](ZnTe)[Formula: see text] single crystals also were grown with [Formula: see text], 0.05, 0.10 concentrations and structural properties of the obtained single crystals were investigated by the XRD method in the temperature range 293–893 K. Lattice parameters and possible phase transitions in the mention temperature range were determined for (Cu2Te)[Formula: see text](ZnTe)[Formula: see text] single crystals for [Formula: see text], 0.05, 0.10 concentrations.

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Structural phase transitions in ‘hcp’ C70 single-crystals

Zeitschrift für Physik B Condensed Matter ◽

10.1007/bf01316845 ◽

1994 ◽

Vol 95 (1) ◽

pp. 67-71 ◽

Cited By ~ 26

Author(s):

Christoph Meingast ◽

Frank Gugenberger ◽

Georg Roth ◽

Miro Haluška ◽

Hans Kuzmany

Keyword(s):

Phase Transitions ◽

Single Crystals ◽

Structural Phase ◽

Structural Phase Transitions

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The cubic-hexagonal transformation in single crystals of cobalt and cobalt-nickel alloys

Acta Metallurgica ◽

10.1016/0001-6160(59)90188-9 ◽

1959 ◽

Vol 7 (8) ◽

pp. 529-533 ◽

Cited By ~ 66

Author(s):

P Gaunt ◽

J.W Christian

Keyword(s):

Single Crystals ◽

Nickel Alloys ◽

Cobalt Nickel

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STRUCTURAL AND PHASE CHANGES OF THE SURFACE LAYERS OF HEATRESISTANT MULTICOMPONENT COATING OF ION-PLASMA COATING Ni-Cr-Al-Y AFTER MODIFICATION BY HIGH-CURRENT ELECTRON BEAMS MICROSECOND DURATION

Periódico Tchê Química ◽

10.52571/ptq.v17.n34.2020.483_p34_pgs_459_468.pdf ◽

2020 ◽

Vol 17 (34) ◽

pp. 459-468

Author(s):

Oksana A BYTSENKO ◽

Igor G STESHENKO ◽

Vladimir A PANOV ◽

Victor V TISHKOV ◽

Alexey B MARKOV

Keyword(s):

Electron Beams ◽

Structural Phase ◽

Plasma Coating ◽

Phase Changes ◽

High Current ◽

Surface Layers ◽

Heat Resistant ◽

Ion Plasma ◽

Current Electron ◽

High Current Electron

The development of aerospace engineering and mechanical engineering directly depends on the development of new metal materials and advanced technologies. The problem of creating materials and their types of processing to increase the level of operational properties is relevant in connection with the complication and tightening of working conditions of modern technologies. One of the most important tasks of contemporary aircraft construction is to increase the operational properties of the surface layer. The purpose of the article is to elucidate the effect of high-current electron beams of microsecond duration on changes in the surface layers of the heat-resistant multicomponent ion-plasma coating Ni-Cr-Al-Y under various conditions. Using a complex of metallophysical research methods, the physicochemical and structural-phase states of the surface layer were studied before and after modification of the samples. These samples were coated with heat-resistant condensed ion-plasma coatings of three different compositions using nine high-current electron beams in 9 modes with different values of electron energy and number of pulses in the selected interval of electron energy. An analysis of the structural phase changes occurring during modification was carried out. Cylindrical samples of targets made of heat-resistant nickel alloy ZhS36 coated with ion-plasma condensed multicomponent coating SDP-2 + VSDP-16. These samples were used according to serial technology, both with subsequent modification using highcurrent electron beams and without modification. It was found that chromium in the initial state is unevenly distributed: chromium is present in the particles; the matrix is depleted in chromium. The research results can be useful for scientists to study the properties of heat-resistant multicomponent ion-plasma coatings Ni-Cr-Al-Y and the effect of high-current electron beams on it, as well as for the manufacture of more heat-resistant materials in aerospace engineering and mechanical engineering.

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