NTI-WEAR PROPERTIES OF MEDIUM CARBON STEEL AFTER CARBURIZING WITH SUBSEQUENT DIFFUSION CHROMIZING AND PVD TREATMENT

Tribologia ◽  
2019 ◽  
Vol 288 (6) ◽  
pp. 25-30
Author(s):  
Ewa Kasprzycka ◽  
Bogdan Bogdański
Keyword(s):  
Carbon Steel ◽  
Tribological Properties ◽  
Medium Carbon Steel ◽  
Linear Wear ◽  
Wear Properties ◽  
Medium Carbon ◽  
Diffusion Chromizing ◽  
Hybrid Treatment ◽  
Hybrid Layers ◽  
Subsequent Diffusion

The paper discusses the results of research on the structure and tribological properties of hybrid layers produced on the surface of medium-carbon steel in hybrid treatment, combining gas carburizing process with the next treatment, i.e. diffusion chromizing and PVD treatment. A comparison was made of the structure and tribological properties of the layers obtained as a result of hybrid treatment with the layers produced in a single diffusion chromizing process. The studies of the layers concerned their structure, chemical composition, thickness, and hardness. Linear wear of the layers were performed by means of three-cylinder-cone method. It has been shown that the linear wear of samples with hybrid layers, produced on medium carbon steel, is less than 50% of samples with single carbide layers. This indicates very good anti-wear properties of hybrid layers.

ANTIWEAR PROPERTIES OF MEDIUM-CARBON STEEL WITH Cr/CrN TYPE HYBRID COATING PRODUCED BY THE PVD METHOD

Tribologia ◽  
2018 ◽  
Vol 282 (6) ◽  
pp. 63-69 ◽  
Author(s):  
Ewa KASPRZYCKA
Keyword(s):  
Carbon Steel ◽  
Tribological Properties ◽  
Scratch Test ◽  
Medium Carbon Steel ◽  
Hybrid Coating ◽  
Hybrid Coatings ◽  
Chromium Nitride ◽  
Linear Wear ◽  
Medium Carbon ◽  
Antiwear Properties

The paper presents the results of examinations of the structure, and mechanical and antiwear properties of hybrid coatings of the Cr/CrN type, consisting of chromium and chromium nitride, formed on the surface of the C45 medium-carbon steel by the Arc-PVD method. Investigations of the morphology and microstructure of hybrid coatings, as well as of their phase composition were carried out. The studies on mechanical properties included tests on hardness and Young’s modulus using the nanoindentation method. Tests on adhesion were conducted using the scratch-test. Tribological properties (linear wear) of the coatings were performed by means of taper-three rolls test. The investigations showed that the linear wear of the C45 steel samples with the Cr/CrN hybrid coatings is 7–9 times smaller than that of hardened steel samples without any coatings. This indicates the excellent tribological properties of the C45 medium-carbon steel with the Cr/CrN type hybrid coatings deposited by the Arc-PVD method.

TRIBOLOGICAL PROPERTIES OF MEDIUM-CARBON STEEL AFTER NITRIDING COMBINED WITH SUBSEQUENT OXIDATION AND IMPREGNATION

Tribologia ◽  
2019 ◽  
Vol 283 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Ewa KASPRZYCKA ◽  
Bogdan BOGDAŃSKI ◽  
Piotr DĄBROWSKI
Keyword(s):  
Carbon Steel ◽  
Tribological Properties ◽  
Subsequent Treatment ◽  
Medium Carbon Steel ◽  
Chloride Ions ◽  
Linear Wear ◽  
Combined Processes ◽  
Corrosion Properties ◽  
Medium Carbon ◽  
Subsequent Oxidation

The paper presents the results of examinations of tribological and corrosion properties of the layers produced on a C45 medium-carbon steel surface in the gas nitriding process combined with subsequent treatment – oxidation and impregnation of corrosion inhibitor. Investigations of the microstructure of these layers and their phase composition were carried out. Hardness of the layers was measured by Vickers method. Tribological properties (linear wear) of the layers were performed by means of the three-cylinder-cone method. Resistance to corrosion was determined by electrochemical methods. The investigations showed that the linear wear of the C45 steel samples with the layers produced in the combined processes of nitriding with subsequent oxidation and impregnation was smaller than that of steel samples without layers. Moreover, the corrosion resistance of these layers in aggressive solutions containing chloride ions was very good.

TRIBOLOGICAL PROPERTIES OF BEARING STEEL AFTER HYBRID TREATMENT, COMBINED DIFFUSION CHROMIZING WITH THE PVD METHOD

Tribologia ◽  
2018 ◽  
Vol 282 (6) ◽  
pp. 5-10
Author(s):  
Bogdan BOGDAŃSKI ◽  
Ewa KASPRZYCKA
Keyword(s):  
Tribological Properties ◽  
Steel Surface ◽  
Bearing Steel ◽  
Subsequent Treatment ◽  
Chromium Nitride ◽  
Linear Wear ◽  
Depth Profiles ◽  
Diffusion Chromizing ◽  
Hybrid Treatment ◽  
Hybrid Layers

The objective of the research in this work was the modification of the structure of chromized carbide layers on a bearing steel surface by the combination of diffusion chromizing with subsequent treatment, chromium nitride deposition by the PVD method, carried out to improve their tribological properties. As a result, CrC+CrN type hybrid layers on the surface of bearing steel were obtained. For comparison, the properties of single chromized carbide layers produced on a bearing steel surface in diffusion chromizing by the pack powder method were tested. Investigations of the layers’ microstructures, phase composition, depth profiles of elements in the layer diffusion zone, and hardness were carried out. Tribological properties (linear wear) of the layers were performed by means of taper-three rolls tests. It has been proved, that the resistance to abrasive wear of the CrC+CrN type hybrid layers is almost two times higher than that for single CrC carbide layers.

scholarly journals Microstructural and Wear Properties of Annealed Medium Carbon Steel Plate (EN8) Cladded with Martensitic Stainless Steel (AISI410)

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 958
Author(s):  
Shubrajit Bhaumik ◽  
Manidipto Mukherjee ◽  
Parijat Sarkar ◽  
Anish Nayek ◽  
Viorel Paleu
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Carbon Steel ◽  
Base Metal ◽  
Martensitic Stainless Steel ◽  
Medium Carbon Steel ◽  
Wear Properties ◽  
Medium Carbon ◽  
Average Grain Size ◽  
Pin On Disc

Limited work on the wear properties of martensitic stainless-steel weld clads initiated this work which included investigations on microstructural and wear properties of cladded AISI 410 (filler wire)/EN 8 plates (substrate). Three layers of martensitic stainless steel (AISI 410) were deposited using metal inert gas (MIG) welding on medium carbon steel (EN 8) achieving a 51.5 ± 2.35 HRC of top layer. The elemental and phase fractions of the cladded layers indicated 98% martensite phase and retained austenite (2%). About 40% dilution was observed between EN 8 and the first weld layer. The results of tests carried out on pin on disc tribometer revealed an enhancement of anti-wear life of the martensitic weld cladded EN 8 by three times that of uncladded EN 8. The uncladded EN 8 plate suffered severe damage and high wear, leading to its failure at 478 s. The failure of the uncladded EN 8 sample was identified by the occurrence of high vibration of the pin on disc tribometer which ultimately stopped the tribometer. On the other hand, the cladded EN 8 sample continued running for 3600 s, exhibiting normal wear. After the tribo test, the surfaces of the pins of both cladded and uncladded EN 8 were analyzed using scanning electron microscope (SEM) and 3D profilometer. The surface characterization of tribo pairs indicated ploughing and galling to be the primary wear mechanisms. The average grain size of top and middle layer was in the range of 2–3.5 µm, while the base metal showed 5.02 µm mean grain size, resulting in higher hardness of clad layers than base metal, also favoring better wear resistance of the cladded EN 8 samples as compared to uncladded EN 8 samples.

Residual stresses and wear properties of induction-hardened medium carbon steel

2019 ◽  
Vol 233 (10) ◽  
pp. 1554-1564
Author(s):  
QC Liu ◽  
YJ Cao ◽  
JQ Sun ◽  
QK He ◽  
YL Tan ◽  
...  
Keyword(s):  
Residual Stress ◽  
Carbon Steel ◽  
Work Hardening ◽  
Medium Carbon Steel ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Medium Carbon ◽  
Delamination Wear ◽  
Worn Surface ◽  
Deformation Layer

A systematic experimental investigation was performed to study the residual stress, microstructure and work hardening on the wear properties of induction-hardened medium carbon steel. The dry sliding wear tests were performed using a reciprocating ball-on-flat apparatus under normal loads of 20, 50, and 100 N against ceramic ball counterface, respectively. The wear mechanism was mainly abrasive wear at low load (20 N) and delamination wear at higher load (100 N) as evidenced by the worn surface topography and wear debris. The deformation layer generated by friction work hardening reduced the friction coefficient, exhibited better antifriction. Typically, the high compressive residual stress could improve the wear resistance by delaying the propagation of microcrack and inhibiting the delamination.

scholarly journals Behavior of Wear Debris and Its Action Mechanism on the Tribological Properties of Medium-Carbon Steel with Magnetic Field

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 45 ◽  
Author(s):  
Hongxin Shi ◽  
Sanming Du ◽  
Chao Sun ◽  
Chenfei Song ◽  
Zhenghai Yang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Carbon Steel ◽  
Tribological Properties ◽  
Wear Debris ◽  
Medium Carbon Steel ◽  
Friction Process ◽  
Medium Carbon ◽  
Debris Removal ◽  
Wear Mode ◽  
Worn Surface

Friction tests were conducted on self-matched pairs of medium-carbon steel using a pin-disk tribometer in an ambient laboratory environment with and without wear-debris removal, in order to clarify the influence of wear debris on the tribological properties of steels that were exposed to magnetic fields. The wear debris and worn surface were observed and analyzed. In the case that the wear debris was removed, the vast majority of wear debris was large, scarce oxidation, and no agglomeration, the grooves of various shapes and discontinuities, and no oxide layer were formed on the worn surface, severe wear occurred throughout the friction process. When the wear debris was not removed, the wear debris became fine, agglomeration and oxidation, a debris layer was formed on the worn surface, and the wear mode transitioned from severe to mild occurred during friction process. The results reveal that the re-entering of wear debris into the friction area is essential for the formation of a wear-debris layer and that an anti-wear effect can be achieved via the wear-debris layer formed on the worn surface during the friction process with a magnetic field.

EFFECT OF DIAMOND INTERLAYER ON THE TRIBOLOGICAL PROPERTIES OF TiAlN FILM SLIDING AGAINST CARBON STEEL

2018 ◽  
Vol 25 (06) ◽  
pp. 1950001 ◽  
Author(s):  
X. L. LEI ◽  
Y. HE ◽  
F. H. SUN
Keyword(s):  
Carbon Steel ◽  
Tribological Properties ◽  
Medium Carbon Steel ◽  
Hard Coatings ◽  
Bilayer Film ◽  
Medium Carbon ◽  
Wear Rates ◽  
Mild Wear ◽  
Lubricating Property ◽  
Diamond Grain

In this study, the effect of diamond interlayer on the tribological properties of titanium aluminum nitride (TiAlN) film sliding against medium carbon steel is investigated in dry rotary friction tests, by evaluating the coefficients of friction (COFs), wear rates, worn surfaces and element transitions of the contacted surfaces in the cemented carbide (WC-Co)-steel, TiAlN-steel, microcrystalline diamond (MCD)-steel, TiAlN/MCD-steel, micro- and nano-crystalline diamond (MNCD)-steel and TiAlN/MNCD-steel contacting pairs. It is found that compared with the TiAlN monolayer, the TiAlN/MCD bilayer film shows 57% higher COF, while the COF of TiAlN/MNCD multilayer inversely drops as much as 54%, due to the distinguished surface diamond grain morphologies of the MCD and MNCD interlayers as well as the copied effect of the TiAlN layer with relatively small thickness. Meanwhile, the diamond interlayer can provide robust load support for the top TiAlN layer, induce the wear mechanism transform from the abrasive wear to adhesive wear, and result in the mild wear of TiAlN/MCD and TiAlN/MNCD multilayers compared to the TiAlN monolayer. Moreover, the softer TiAlN top layer on MCD and MNCD interlayers can effectively improve the storage capacity of element oxygen and worn steel ball debris as well as accelerating the surface chemical reactions to form a smoother continuous ionic metal oxides tribofilm in the contacted zones due to its good self-lubricating property. Among all the hard coatings discussed when sliding against medium carbon steel, the TiAlN/MNCD coating shows the lowest COF and mild wear, due to the robust load support capacity of the beneath MNCD layer as well as the good self-lubricated and tribofilm formation capacity of the top TiAlN layer, which shows broad application potential in carbon steel machining.

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

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