scholarly journals Effect of Copper on Formation of Wear-Resistant Ultradispersed and Nanostructured Surface Layers of Friction of Chromium Steels

2021 ◽  
Vol 43 (7) ◽  
pp. 853-886
Author(s):  
V. V. Tykhonovych ◽  
◽  
O. M. Grуpachevskуi ◽  
V. G. Novytskyi ◽  
◽  
...  
Keyword(s):  
Nanostructured Surface ◽  
Surface Layers ◽  
Wear Resistant ◽  
Chromium Steels ◽  
Effect Of Copper

Nanoscale Behaviour of Certain Materials/Surfaces

2007 ◽  
Vol 539-543 ◽  
pp. 5007-5012
Author(s):  
Psantu K. Datta ◽  
Zbigniew Klusek ◽  
Hai Liang Du ◽  
Jim. S. Burnell-Gray
Keyword(s):  
High Temperature ◽  
Tio2 Surface ◽  
Nanostructured Surface ◽  
Dlc Coatings ◽  
Wear Resistant ◽  
Property Change ◽  
Tial Intermetallics ◽  
Nano Patterning

Nanoscale studies of four important phenomena – in-situ development of high temperature (HT) wear resistant nanostructured surface glaze, the initial stages of oxidation of TiAl intermetallics, the high temperature degradation of DLC coatings and the property change promoted by nano-patterning of a TiO2 surface are described.

Formation of Gradient Multiphase Nanostructured Surface Layers Using the Electron-Ion-Plasma Combined Method

2015 ◽  
Vol 756 ◽  
pp. 236-242 ◽  
Author(s):  
Yuriy F. Ivanov ◽  
Anton D. Teresov ◽  
Olga V. Ivanova ◽  
Victor E. Gromov ◽  
Evgeniy A. Budovskikh ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Subsequent Treatment ◽  
Nanostructured Surface ◽  
Combined Method ◽  
Surface Layers ◽  
Pulsed Electron Beam ◽  
Mechanical And Tribological Properties ◽  
Ion Plasma ◽  
Defect Substructure ◽  
Mechanical And Tribological Characteristics

The data of the study of the elemental and phase composition, the condition of the defect substructure, mechanical and tribological characteristics of titanium alloy VT6 subjected to electroexplosive carburization with a sample of titanium diboride powder and the subsequent treatment by high-intensity pulsed electron beam is presented. It has been established that the main mechanisms responsible for an increase in the mechanical and tribological properties of the material are solid, dispersion, and grain boundary.

Effect of copper addition on the characteristics of high-carbon and high-chromium steels

2014 ◽  
Vol 614 ◽  
pp. 36-44 ◽  
Author(s):  
Jun-Yun Kang ◽  
Yoon-Uk Heo ◽  
Hoyoung Kim ◽  
Dong-Woo Suh ◽  
Dongmin Son ◽  
...  
Keyword(s):  
High Carbon ◽  
High Chromium ◽  
Copper Addition ◽  
Chromium Steels ◽  
Effect Of Copper

scholarly journals Creation of wear-resistant near-surface-layers with inhomogeneous structure on NiTi alloy by ion implantation technology

2010 ◽  
Vol 10 ◽  
pp. 69-76
Author(s):  
Z. Swiatek ◽  
N. Levintant-Zayonts ◽  
M. Michalec ◽  
T. Czeppe ◽  
M. Lipinski ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Niti Alloy ◽  
Inhomogeneous Structure ◽  
Surface Layers ◽  
Near Surface ◽  
Wear Resistant

COMPARING THE BAKE HARDENING OF NANO-GRAIN AA6056 WITH ITS COARSE-GRAIN STRUCTURE

2012 ◽  
Vol 05 ◽  
pp. 335-341
Author(s):  
KAMRAN DEHGHANI
Keyword(s):  
Grain Structure ◽  
Coarse Grain ◽  
Nanostructured Surface ◽  
X Ray Diffraction ◽  
Surface Layers ◽  
Bake Hardening ◽  
X Ray ◽  
Nanostructured Layer ◽  
Wire Brushing ◽  
Bake Hardenability

In preset work, the bake hardening behavior of 6056 aluminum alloy with nanostructured layer, produced by surface severe plastic deformation (SSPD), was compared with that of AA6056 with conventional coarse grain structure. Wire brushing process was employed in order to produce surface layers with nanograins. After formation of nanostructured surface layer, the structure was characterized using X-ray Diffraction (XRD) and scanning electron microscopy (SEM) techniques. According to the microhardness measurements, the depth of nanostructured layer, with the grains of 50-110 nm, was about 40-50 μm on each side of specimens. The bake hardenability of the produced nanostructured AA6056 was then studied. The results indicate an increase of about 40% in the bake hardening of nanograin AA6056 comparing to the bake hardening of coarse-grain AA6956. The maximum microhardness of nanograin layer was about 250 HV, whereas it was 65 HV for coarse-grain AA6056.

The Formation of Nanostructured Surface Layers of a Material with Shape Memory Effect of the TiNi Deposition Melt of the Fusible Metal at a Temperature Gradient

2014 ◽  
Vol 621 ◽  
pp. 7-12 ◽  
Author(s):  
Zh.M. Blednova ◽  
Peter Olegovich Rusinov ◽  
Anna Pavlovna Jurkova
Keyword(s):  
Grain Size ◽  
Temperature Gradient ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Experimental Studies ◽  
Argon Atmosphere ◽  
Nanostructured Surface ◽  
Surface Layers ◽  
Average Grain Size

The results of experimental studies on the formation of the surface layers of a material with shape memory effect (SME) based on TiNi deposition of Pb-Bi melt at a temperature gradient of 600-1100 °C in an argon atmosphere. It is shown that this method allows to obtain uniform surface layers in nanostructured state and almost any thickness can be used for the formation of coatings on the interior surfaces of products of any shape with the stress concentrators. Structure, chemical and phase composition of the surface layers provide a manifestation of TiNi shape memory. The average grain size of TiNi coatings ranges between 60 ÷ 160 nm.

scholarly journals Fabrication and Nanostructured Surface Layers of Al Alloy by Surface Vibrational Mechanical Attrition

2001 ◽  
Vol 697 ◽  
Author(s):  
X. Wu ◽  
Y. Hong ◽  
J. Lu ◽  
K. Lu
Keyword(s):  
Processing Time ◽  
Al Alloy ◽  
Nanostructured Surface ◽  
Surface Layers ◽  
Transmission Electron ◽  
Mechanical Attrition ◽  
Boundary Rotation ◽  
Nano Grains ◽  
Nanometer Regime ◽  
Simultaneous Evolution

AbstractNanograins were introduced into the surface layers of an Al-alloy during surface vibrational mechanical attrition. Transmission electron microscopy revealed that microstructures developed with an increase in strain, in the following sequence, i.e., lamellar microbands of elongated subgrains, equiaxed submicro-, and nano-grains respectively. The grain subdivision into the subgrains was found to be the main mechanism responsible for grain refinement. The simultaneous evolution of high boundary misorientations was ascribed to the boundary rotation for accommodating further strains. Results showed that the grains could refine remarkably into the nanometer regime (<100 nm) within the outer surface of the layer. The depth of the nanocrystal layers increased and the grain size decreased with the extension of processing time. The nanocrystal layers evidenced an increase in hardness.

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