The Structure and Properties of Hard Metals Irradiated by High-Energy Electron Beam

2013 ◽  
Vol 872 ◽  
pp. 214-218 ◽  
Author(s):  
Yurii F. Ivanov ◽  
Vladimir Ovcharenko ◽  
Aleksei Belyi ◽  
Anton D. Teresov
Keyword(s):  
Electron Beam ◽  
Hard Metal ◽  
High Energy ◽  
Structure And Properties ◽  
Titanium Layer ◽  
Hard Metals ◽  
Nanostructured Layer ◽  
Untreated Material ◽  
Multi Phase ◽  
Metal Spray

t has been established experimentally that irradiating the sample of tungsten carbide hard metal spray-coated by titanium layer 1-2 μm thickness by high-intensity electron beam resulted in generation of a gradient multi-phase nanostructured layer of microhardness higher than that of untreated material by a factor of 2.5.

Change in structure and properties of carbon steels bombarded by a 10?5 to 10?4 second high-energy electron beam

1995 ◽  
Vol 38 (10) ◽  
pp. 1040-1046 ◽  
Author(s):  
Yu. F. Ivanov ◽  
I. S. Kashinskaya ◽  
S. V. Lykov ◽  
A. B. Markov ◽  
E. M. Oks ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Carbon Steels ◽  
Energy Electron ◽  
Structure And Properties ◽  
High Energy Electron

Ti-Y Surface Alloy Formed by High-Energy Methods

2015 ◽  
Vol 1085 ◽  
pp. 192-196
Author(s):  
Nadejda N. Morozova ◽  
Konstantin V. Sosnin ◽  
Elizaveta A. Petrikova ◽  
Anton D. Teresov ◽  
Yury F. Ivanov
Keyword(s):  
Electron Beam ◽  
Phase Composition ◽  
High Energy ◽  
Energy Methods ◽  
Alloyed Layer ◽  
Combined Method ◽  
Titanium Layer ◽  
Mechanical And Tribological Properties ◽  
Electroexplosive Alloying ◽  
Globular Form

The alloying of the titanium layer by yttrium is carried out with the combined method of electroexplosive alloying and the subsequent radiation by a high-intensity electron beam. The research of structure, element and phase composition, mechanical and tribological properties of the alloyed layer is executed. The saturation of the titanium layer by atoms of yttrium, oxygen and carbon that leads to formation of oxides and carbides of the titanium and yttrium is revealed. The formation of two types of an eutectic is established. It is shown that the eutectic enriched with the titanium has a globular form when the eutectic enriched with yttrium has a plated one. The multiple increasing of microhardness, decreasing of friction coefficient and the wear rate of the alloyed layer is revealed.

Structure and Property Coating Modification by High Energy Density

2014 ◽  
Vol 1013 ◽  
pp. 153-157 ◽  
Author(s):  
Viktor A. Vlasov ◽  
Yurii F. Ivanov ◽  
Gennady Volokitin ◽  
Anton D. Teresov ◽  
Anatolii A. Klopotov
Keyword(s):  
Electron Beam ◽  
Layer Structure ◽  
Pure Titanium ◽  
High Energy ◽  
Substrate Material ◽  
High Energy Density ◽  
Commercially Pure Titanium ◽  
Structure And Property ◽  
Multi Phase ◽  
Arc Plasma Torch

The paper reviews the results of investigations of the surface layer structure and properties of type 35-L steel and commercially pure titanium modified by plasma flows (arc plasma torch with the powder blown into an arc), electro-explosive alloying of titanium specimens, and high energy electron-beam treatment performed on the vacuum electron-beam plant SOLO. It is shown that the surface treatments under review have lead to a multilayer and multi-phase structure formed by crystalline particles of sub-microsized and nanosized range, mechanical (microhardness) and tribological (wear resistance) properties of which exceed manifold that of the substrate material.

scholarly journals Electron beam modification of the structure and properties of silumins with various silicon concentrations

2021 ◽  
Vol 2064 (1) ◽  
pp. 012081
Author(s):  
D V Zaguliaev ◽  
A A Klopotov ◽  
Y F Ivanov ◽  
A M Ustinov ◽  
Y A Abzaev ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Electron Beam ◽  
Applied Stress ◽  
High Speed ◽  
Structure And Properties ◽  
Phase Boundaries ◽  
Pulsed Electron Beam ◽  
Untreated Material ◽  
Surface Modified

Abstract This work intended to analyse the structure and properties of hypoeutectic silumin treated by a pulsed electron beam. The study has shown that the silumin surface modified by a pulsed electron beam fractures due to the formation and propagation of microcracks along the boundaries of high-speed crystallization cells. In the untreated material (the concentration of silicon in the alloy is irrelevant) microcracks tend to originate and propagate along the phase boundaries between aluminum and silicon. The research has revealed that the plasticity of irradiated AK5M2 silumin is 1.6 higher and the strength is 1.1 lower than these characteristics of the untreated material; the irradiated AK10M2H silumin fractures at higher (by ≈ 30%) applied stress and higher (by 30%) plastic deformation than the untreated material.

Effects of High-Energy Ions on Synthetic Quartz

1972 ◽  
Vol 30 ◽  
pp. 544-545
Author(s):  
Joseph J. Comer ◽  
Charles Bergeron ◽  
Lester F. Lowe
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Electron Beam ◽  
High Energy ◽  
Transmission Electron ◽  
Kikuchi Lines ◽  
High Energy Ions ◽  
Diffraction Patterns ◽  
Dauphiné Twinning ◽  
Beam Damage

Using a Van De Graaff Accelerator thinned specimens were subjected to bombardment by 3 MeV N+ ions to fluences ranging from 4x1013 to 2x1016 ions/cm2. They were then examined by transmission electron microscopy and reflection electron diffraction using a 100 KV electron beam.At the lowest fluence of 4x1013 ions/cm2 diffraction patterns of the specimens contained Kikuchi lines which appeared somewhat broader and more diffuse than those obtained on unirradiated material. No damage could be detected by transmission electron microscopy in unannealed specimens. However, Dauphiné twinning was particularly pronounced after heating to 665°C for one hour and cooling to room temperature. The twins, seen in Fig. 1, were often less than .25 μm in size, smaller than those formed in unirradiated material and present in greater number. The results are in agreement with earlier observations on the effect of electron beam damage on Dauphiné twinning.

Nanostructured powders based on aluminum reinforced by silicon nitride designed for spraying of multifunctional strengthened coatings

2019 ◽  
pp. 65-73
Author(s):  
T. I. Bobkova ◽  
B. V. Farmakovsky ◽  
N. A. Sokolova
Keyword(s):  
Silicon Nitride ◽  
Composite Powder ◽  
High Energy ◽  
Cold Gas Dynamic Spraying ◽  
Powder Materials ◽  
Structure And Properties ◽  
Gas Dynamic ◽  
Composition Structure ◽  
New Phase ◽  
Nanostructured Powders

The work deals with topical issues such as development of composite nanostructured powder materials. The results of creating powders based on the system “aluminum–nitride of silicon” are presented. Complex investigations of the composition, structure and properties of powder materials, as well as coatings formed on their basis by supersonic cold gas dynamic spraying, were carried out. It has been found that the high-energy treatment of a powder mixture of aluminum with nanofibers of silicon nitride provides the formation of a composite powder in which a new phase of the Si(1-х)AlхO(1-х)Nх type is formed, which additionally increases the hardness in the coatings to be sprayed.

The structure and properties of boron carbide ceramics modified by high-current pulsed electron-beam

2016 ◽  
Author(s):  
Yuri Ivanov ◽  
Oleg Tolkachev ◽  
Maria Petyukevich ◽  
Anton Teresov ◽  
Olga Ivanova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Boron Carbide ◽  
Structure And Properties ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Carbide Ceramics
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