scholarly journals The Effect of Finishing Milling Parameters on the Physico-Mechanical Properties of the Structural Steel Surface Layer of Aircraft Parts

2020 ◽  
pp. 027-035
Author(s):  
V.D. Vermel ◽  
◽  
S.A. Bolsunovsky ◽  
Yu.O. Leontyeva ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Structural Steel ◽  
Steel Surface ◽  
Milling Parameters

Impact of Electrolytic-Plasma Nitriding on 34CrNi1Mo Steel Surface Layer Properties

2014 ◽  
Vol 698 ◽  
pp. 439-443 ◽  
Author(s):  
Mazhyn Skakov ◽  
Lyudmila Yerygina ◽  
Michael Scheffler
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Structural Steel ◽  
Steel Surface ◽  
Plasma Nitriding ◽  
Plasma Hardening ◽  
Temperature Force ◽  
Heating Mode

The present work is devoted to the research into the microstructure and microhardness of structural steel 34CrNi1Mo after electrolytic-plasma nitriding in a cathode heating mode. The technology of electrolyte-plasma hardening provides a reliable quality and the required mechanical properties of the products which are often subjected to wear and temperature-force actions.

scholarly journals INFLUENCE OF VACUUM ACTIVATED DIFFUSION CHROMING ON MECHANICAL PROPERTIES OF THE SURFACE OF STEEL 25X1MF

2020 ◽  
pp. 132-138
Author(s):  
S.G. Rudenkyi ◽  
V.I. Zmij ◽  
N.F. Kartzev ◽  
A.A. Korneev ◽  
A.V. Kunchenko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Sodium Chloride ◽  
Abrasive Wear ◽  
Steel Surface ◽  
Chromium Content ◽  
Chromium Plating ◽  
Untreated Material

In the work, the surface of samples made of 25X1MF steel was saturated with chromium. For this, the method of vacuum activated diffusion chromium plating was used. In this process, sodium chloride was used as an activator. It was found that vacuum activated diffusion chromium plating of samples made of 25Kh1MF steel leads to the formation of a surface layer containing from 87 to 97 wt.% of this element. It was found that an increase in the temperature of the process and its duration leads to an increase in the chromium content on the surface of the samples. The tests showed that in the case of cavitations-erosion effects on the surface of chrome-plated samples of steel 25X1MF they have higher resistance. With abrasive wear, the resistance of the chrome-plated steel surface is 1.8 to 3 times higher compared to untreated material.

Change of Structure and Mechanical Properties of R6M5 Steel Surface Layer at Electrolytic-Plasma Nitriding

2014 ◽  
Vol 1040 ◽  
pp. 753-758 ◽  
Author(s):  
Mazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Erlan Batyrbekov ◽  
Michael Scheffler
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
High Speed ◽  
Steel Surface ◽  
Plasma Nitriding ◽  
Cutting Tools ◽  
High Speed Steel ◽  
High Hardness ◽  
R6m5 Steel ◽  
Temperature Plasma

In the article changes in the structure and mechanical properties of R6M5 steel surface layer after electrolytic-plasma nitriding are shown. The optimal mode of electrolytic-plasma nitriding of R6M5 high-speed steel in electrolyte based on carbamide, which allows saturation of the surface with nitrogen from low-temperature plasma and get the modified layer of high hardness and wear-resistance. It is established, that after electrolytic-plasma nitriding reduced R6M5 steel wear rate and increases its resistance to abrasive wear. Perspectivity of use an electrolytic-plasma nitriding method to improve performance cutting tools made from R6M5 steel is shown.

Features of tribomodifi cation of steel surface layer and formation of wear-resistant ceramic-metal coating on friction surface

2020 ◽  
pp. 217-223
Author(s):  
L.B. Leont’ev ◽  
A.L. Leont’ev ◽  
N.P. Shapkin ◽  
V.N. Makarov ◽  
P.A. Nikiforov
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Chemical Composition ◽  
Friction Surface ◽  
Steel Surface ◽  
Metal Layer ◽  
Metal Coating ◽  
Friction Surfaces ◽  
Silicon Oxygen ◽  
Resistant Ceramic

The features of the tribomodification process of friction surfaces of steel 40Kh with modified vermiculite are studied. The mechanism for forming of ceramic-metal coating is refined, the chemical composition and mechanical properties of the coating are determined. It is found that ceramic-metal layer 6.0...7.5 μm thickness is formed on the friction surface, which contains large amount of carbon, silicon, oxygen and minimum amount of iron (only 8...9 %). The alloying depth of the surface layer with elements that make up the modified vermiculite reaches 0.25 mm

STRUCTURE OF THE AUSTENITIC STEEL SURFACE LAYER SUBJECTED TO COMPRESSION PLASMA FLOWS IMPACT

2020 ◽  
Vol 24 (3) ◽  
pp. 211-225
Author(s):  
Nikolai N. Cherenda ◽  
Vladimir V. Uglov ◽  
Yu. V. Martinovich ◽  
I. A. Betanov ◽  
Valiantsin M. Astashynski ◽  
...  
Keyword(s):  
Surface Layer ◽  
Austenitic Steel ◽  
Steel Surface ◽  
Plasma Flows ◽  
Compression Plasma Flows

scholarly journals Analysis of Different Complex Multilayer PACVD Coatings on Nanostructured WC-Co Cemented Carbide

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 823
Author(s):  
Danko Ćorić ◽  
Mateja Šnajdar Musa ◽  
Matija Sakoman ◽  
Željko Alar
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Base Material ◽  
Single Layer ◽  
Production Costs ◽  
Structural Defects ◽  
Cemented Carbides ◽  
Material System ◽  
Tin Coating ◽  
Ticn Coating

The development of cemented carbides nowadays is aimed at the application and sintering of ultrafine and nano-sized powders for the production of a variety of components where excellent mechanical properties and high wear resistance are required for use in high temperature and corrosive environment conditions. The most efficient way of increasing the tribological properties along with achieving high corrosion resistance is coating. Using surface processes (modification and/or coating), it is possible to form a surface layer/base material system with properties that can meet modern expectations with acceptable production costs. Three coating systems were developed on WC cemented carbides substrate with the addition of 10 wt.% Co using the plasma-assisted chemical vapor deposition (PACVD) method: single-layer TiN coating, harder multilayer gradient TiCN coating composed of TiN and TiCN layers, and the hardest multilayer TiBN coating composed of TiN and TiB2. Physical and mechanical properties of coated and uncoated samples were investigated by means of quantitative depth profile (QDP) analysis, nanoindentation, surface layer characterization (XRD analysis), and coating adhesion evaluation using the scratch test. The results confirm the possibility of obtaining nanostructured cemented carbides of homogeneous structure without structural defects such as eta phase or unbound carbon providing increase in hardness and fracture toughness. The lowest adhesion was detected for the single-layer TiN coating, while coatings with a complex architecture (TiCN, TiBN) showed improved adhesion.

scholarly journals Mechanical Properties of Single-pass Hybrid Laser Arc Welded 25 mm Thick-walled Structures Made of Fine-grained Structural Steel

2019 ◽  
Vol 36 ◽  
pp. 112-120 ◽  
Author(s):  
Ömer Üstündağ ◽  
Sergej Gook ◽  
Andrey Gumenyuk ◽  
Michael Rethmeier
Keyword(s):  
Mechanical Properties ◽  
Structural Steel ◽  
Single Pass ◽  
Fine Grained
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