Wear analysis on EN8, EN9 and EN24

2017 ◽  
Vol 14 (3) ◽  
pp. 188-192
Author(s):  
Suraj R. ◽  
Jithish K.S.
Keyword(s):  
Wear Testing ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Content Type ◽  
Wear Analysis ◽  
Use Wear ◽  
Specific Dimension ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Time Required

Purpose This paper aims to present a comparative study of the wear properties of ferrous welded materials like EN8, EN9 and mild steel (MS). Design/methodology/approach The material is cut into specific dimension after hardfacing and is studied for the wear properties of the material. The wear testing is done on a pin-on-disc apparatus. The microhardness of the material is studied using the Vickers microhardness measuring apparatus. Findings The wear properties of ferrous welded materials like EN8, EN9 and MS are studied. It is found the MS has the least wear when compared to EN8 and EN9. The microhardness of MS is higher than EN8 and EN9, thus making it more wear-resistant than EN8 and EN9. The coefficient of friction in the dry sliding condition is found to be constant throughout the experiment. Research limitations/implications Major restriction is the amount of time required for use-wear analysis and replication experiments that are necessary to produce reliable results. These limitations mean that the analysis of total assemblages with the intention of producing specific results, especially of worked materials, is not feasible. Practical implications Generally, the complexity and rigour of the analysis depend primarily on the engineering needs and secondarily on the wear situation. It has been the author’s experience that simple and basic wear analyses, conducted in the proper manner, are often adequate in many engineering situations. Integral and fundamental to the wear analysis approach is the treatment of wear and wear behaviour as a system property. As a consequence, wear analysis is not limited to the evaluation of the effects of materials on wear behaviour. Wear analysis often enables the identification of nonmaterial solutions or nonmaterial elements in a solution to wear problems. For example, changes in or recommendations for contact geometry, roughness, tolerance and so on are often the results of a wear analysis. Originality/value The value of the work lies in the utility of the results obtained to researchers and users of the EN8, EN9 and EN24 material for their components.

Friction and wear behaviour of Fe-Cu-C based self lubricating material with CaF2 as solid lubricant

2017 ◽  
Vol 69 (5) ◽  
pp. 715-722 ◽  
Author(s):  
Sanjay Mohan Sharma ◽  
Ankush Anand
Keyword(s):  
Compressive Strength ◽  
Friction And Wear ◽  
Room Temperature ◽  
Solid Lubricant ◽  
Wear Behaviour ◽  
Wear Loss ◽  
Wear Properties ◽  
Content Type ◽  
Wear And Friction ◽  
Pin On Disc

Purpose This paper aims to investigate the effect of CaF2 (calcium fluoride) addition as a solid lubricant on the friction and wear behaviour of sintered Fe-Cu-C materials under different loads. Design/methodology/approach In this study, the effects of CaF2 added in varying weight percentages on the friction-wear properties of Fe-2Cu-0.8C alloys are investigated. Five Fe-2Cu-0.8C-based compositions comprising CaF2 in 0, 3, 6, 9 and 12 Wt.% were prepared using the single-stage compaction and sintering technique. Friction coefficient, wear loss, hardness and compressive strength of the specimens were measured. The worn-out surfaces were analysed using a scanning electron microscope. Friction and wear tests were carried out on pin-on-disc machine under dry sliding conditions at room temperature. Findings The alloy with 3 Wt.% CaF2 was found to be useful in improving wear and friction properties, whereas higher contents of CaF2 resulted in increased wear and friction. Apart from enhanced tribological properties, a slight decrease in the compressive strength was also observed in the 3-Wt.%-CaF2-added sample. Adhesion and abrasion were the prominent wear types observed during this study. Originality/value A new self-lubricating composite is developed where CaF2 is used as a solid lubricant in a Fe-Cu-C-based matrix. CaF2, being a high-temperature lubricant, is tried and tested for friction and wear at room temperature, and the results show that the addition of CaF2 in Fe-Cu-C improved its friction and wear properties. Thus, the developed material can be used for antifriction applications.

Friction and Wear Behaviour of Nanocrystalline Cobalt

2007 ◽  
Author(s):  
M. Shafiei ◽  
A. T. Alpas
Keyword(s):  
Grain Size ◽  
Friction And Wear ◽  
Surface Damage ◽  
Ambient Air ◽  
Wear Behaviour ◽  
Initial Surface ◽  
Wear Properties ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Contact Surfaces

The friction and wear properties of nanocrystalline cobalt (nc Co) with a grain size of 20±5 nm and a hardness of 503±13 HV were studied using a pin-on-disc tribometer. Tests performed under unlubricated sliding conditions in ambient air showed that large tribolayer area covered the nc Co’s wear track. The oxygen concentration of the tribolayer was higher than that formed on contact surfaces of microcrystalline cobalt (mc Co) with a grain size of 16±3 μm and a hardness of 299±8 HV tested under the same conditions, due to the higher tendency of nc Co for oxidation. Higher rate of oxidational wear in nc Co resulted in higher initial surface damage in this material compared to the mc Co. Once the tribolayer was formed on top of the contact surfaces, a steady-state wear regime prevailed, reducing the coefficient of friction (COF) and the wear rate in this sample.

Experimental investigations on the effect of heat-treatment parameters on the wear behavior of aluminum hybrid composites

2014 ◽  
Vol 66 (4) ◽  
pp. 545-554 ◽  
Author(s):  
C. Velmurugan ◽  
R. Subramanian ◽  
S.S. Ramakrishnan ◽  
S. Thirugnanam ◽  
T. Kannan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Stir Casting ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Content Type ◽  
Heat Treated ◽  
Pin On Disc

Purpose – The purpose of this paper is to investigate the influence of most predominant heat-treatment parameters on the wear behavior of Al6061 hybrid composite reinforced with 10 weight per cent SiC and 2 weight per cent graphite particles. Design/methodology/approach – The aluminum hybrid composite was produced using stir casting process. Wear testing of heat-treated samples was carried out using a pin-on-disc apparatus. Experiments were conducted by applying design of experiments (DOE) technique. The experimental values were used for formulation of a mathematical model. The wear surfaces of composite specimens were analyzed using scanning electron microscope (SEM). Findings – The volume loss of heat-treated composite initially decreased with increasing aging duration. This was followed by the attainment of a minimum and then a reversal in the trend at longer aging times. SEM micrographs of the wear surfaces of the composite show that the wear mechanisms were abrasion, delamination and adhesion. Originality/value – In this paper, the hybrid composite was produced using stir casting route, and its wear properties after heat treatment were tested using pin-on-disc apparatus. It was found that heat treatment had a profound effect on the wear behaviour of the developed composite.

Effect of Heat Treatment on the Structure, Wear and Corrosion of AISI L6 Tool Steel

2021 ◽  
Vol 406 ◽  
pp. 448-456
Author(s):  
Oualid Ghelloudj ◽  
Amel Gharbi ◽  
Djamel Zelmati ◽  
Khedidja Bouhamla ◽  
Chems Eddine Ramoul ◽  
...  
Keyword(s):  
Tool Steel ◽  
Tribological Behavior ◽  
Wear Testing ◽  
Wear And Corrosion ◽  
Hardening Treatment ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Hardened Tool Steel ◽  
Hardness Increase ◽  
Steel Hardening

This work is a contribution in analyzing structure, tribological behavior and corrosion of AISI L6 hardened tool steel. Structural characterization and tribological behavior of steel were investigated using Optical Microscopy (OM), Scanning electron microscopy (SEM), wear testing by friction on a pin-on-disc Tribometer and corrosion by potentiodynamic polarization. Comparing to the as-received steel, hardening has generated a fine martensitic microstructure causing a 1.5 times hardness increase. Hardening has contributed to improvement of wear resistance as the coefficient of friction has decreased from 0.86 to 0.67μ. An increase in corrosion resistance was observed after hardening treatment.

scholarly journals Microstructure, Microhardness, and Wear Properties of Cobalt Alloy Electrodes Coated with TiO2 Nanoparticles

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1186
Author(s):  
Sebastian Balos ◽  
Petar Janjatovic ◽  
Miroslav Dramicanin ◽  
Danka Labus Zlatanovic ◽  
Branka Pilic ◽  
...  
Keyword(s):  
Modified Electrodes ◽  
Wear Testing ◽  
Titanium Oxides ◽  
Cobalt Alloy ◽  
Wear Properties ◽  
X Ray ◽  
Eds Analysis ◽  
Present Complex ◽  
Complex Carbides ◽  
Pin On Disc

In this paper, the influence of TiO2 nanoparticle coating on cobalt-based electrodes was studied. Different coating treatment times were applied, and the results were compared to the hard-faced layer obtained with unmodified electrodes. The hard facing was done in three layers, the first being a Ni-based interlayer, followed by two layers of corrosion and wear-resistant Co-based Stellite 6 alloy. Pin-on-disc wear testing was applied, along with the metallographic study and hardness measurements of the hard-faced layers. Furthermore, energy-dispersive X-ray spectroscopy (EDS) analysis was conducted. It was found that the microstructural properties, as well as microhardness profiles, are modified in hard-faced layers obtained with modified electrodes. Interdendritic distances are altered, as are the dendrite growth directions. Titanium oxides are formed, which, along with the present complex carbides, increase the wear resistance of the hard-faced layers compared to layers obtained with untreated electrodes.

TRIBOLOGICAL AND THERMOPHYSICAL PROPERTIES OF JATROPHA OIL CONTAINING TIO2 NANOPARTICLES

2020 ◽  
Author(s):  
Rajaganapathy C ◽  
Vasudevan D
Keyword(s):  
Tio2 Nanoparticles ◽  
Friction Reduction ◽  
Engine Oil ◽  
Material Surface ◽  
Wear Properties ◽  
Weight Percentage ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Wire Method ◽  
Surface Examination

In this paper, an attempt was made, to evaluate the tribological performance of Jatropa oil with addition of nanoparticles, on wear reduction in Al 6082 and it was compared with SAE20W40 engine oil. Experiments were conducted with pure Jatropa oil with different weight percentage of TiO2 nanoparticles such as 0%, 0.1%, 0.3% and 0.5%. The coefficient of friction and specific wear rate of the Al specimens were found by using pin on disc tribo-meter as per ASTM G99 standards, at constant speed of 1m/s using different loads such as 20N, 40N and 60N. The experimental results indicated that the addition of TiO2 with Jatropa oil indicated good friction reduction and anti-wear properties, compared to SAE20W40 engine oil. The lubricant viscosity and thermal conductivity were measured using Redwood viscometer and Transient hot wire method. Surface analysis was done using scanning electron microscopy to the study surface morphology of pin material. Surface examination revealed that TiO2 Nanoparticles lead to smoother worn surfaces than commercial Engine oil SAE20W40.

scholarly journals Dry Sliding Wear Of Intra-Layer Curaua/Basalt Polyester Composites under Varying PV Conditions

2019 ◽  
Vol 9 (2S2) ◽  
pp. 331-333
Keyword(s):  
Sliding Wear ◽  
Hybrid Composites ◽  
Testing Machine ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Hybrid Fibers ◽  
Weight Percentage ◽  
Pin On Disc ◽  
Pin On Disk

An investigational analysis was conducted to study the effect of basalt/curaua hybrid composite focusing on wear properties. The hybrid composites are fabricated by resin transfer molding and the tests are conducted by pin on disk as per ASTM G99. Basalt/Curaua relative fiber weight percentage as 0/100,40/60, 60/40, 100/0 are fabricated and analyzed for abrasion wear resistance. Specimens are tested for the load of 50N at 1 m/s using Pin on Disc wear testing machine by varying abrading distance. Worn out surfaces of the abraded composites are studied by using scanning electron microscopy (SEM) and Fourier- transform infrared spectroscopy (FTIR). Roughness of the worn and pure surfaces is also accounted to measure significance of hybridization on tribological properties of the hybrid composites. Result shows that coefficient of friction is increasing in higher the curaua fiber in hybrid composites. Morphology evident the wear mechanism and internal compatibility of hybrid fibers.

Tribological Studies of Epoxy Composites With UHMWPE and MoS2 Fillers Coated on Bearing Steel: Dry Interface and Grease Lubrication

2020 ◽  
Vol 142 (5) ◽  
Author(s):  
Neha Singh ◽  
Sujeet K. Sinha
Keyword(s):  
Film Formation ◽  
Normal Load ◽  
Bearing Steel ◽  
Transfer Film ◽  
Wear Properties ◽  
Grease Lubrication ◽  
Pure Epoxy ◽  
Tribological Coatings ◽  
Pin On Disc ◽  
The Coefficient Of Friction

Abstract Epoxy with ultra-high molecular weight polyethylene (UHMWPE) and MoS2 fillers was coated on a bearing steel (SAE 52100). Frictional and wear properties of the coated samples in sliding contact were investigated on a pin-on-disc tribometer under a normal load of 10 N and a linear sliding speed of 1 m/s against a bearing steel ball. The optimized coating composition (72 wt% Epoxy + 7 wt% hardener + 18 wt% UHMWPE + 3 wt% MoS2) showed highly improved tribological properties compared to pure epoxy and other epoxy-based composites. There was 75% reduction in the coefficient of friction (COF) in the dry interfacial condition (COF reduced from 0.2 to 0.05) over pure epoxy and 80% reduction with grease as the lubricant. The specific wear-rate of the composite was lower by five orders of magnitude over that of pure epoxy. Other mechanical properties such as hardness, tensile strength, and Young's modulus of the composite showed increments of 86%, 121%, and 43%, respectively, with respect to those of pure epoxy. 2–3 wt% of MoS2 had drastic effects on improving strength and reducing friction and wear of the composites. For dry sliding, initial abrasive and adhesive wear mechanisms led to transfer film formation on the steel counterface, and the shearing was mainly within the transfer film. For the grease-lubricated case, a thin layer of grease helped in easy shearing, and the transfer film formation was avoided. This epoxy-based composite will have applications as tribological coatings for journal bearings.

Investigation on microstructures, mechanical and wear properties of Al 390/ZrO2 composite materials fabricated by P/M method

2020 ◽  
Vol 17 (1) ◽  
pp. 149-166
Author(s):  
Karthikeyan S ◽  
Karunanithi R ◽  
Ashoke Ghosh
Keyword(s):  
Wear Resistance ◽  
Wear Test ◽  
Matrix Alloy ◽  
Sem Analysis ◽  
High Wear Resistance ◽  
Wear Properties ◽  
Content Type ◽  
The Matrix ◽  
Pin On Disc ◽  
A390 Alloy

PurposeAluminium is the most proficiently and commonly used metal due to its desirable physical, chemical and mechanical properties. When Aluminium reinforced with hard ceramic particles, shows increased strength and good corrosion resistant and wear resistant qualities. In the present investigation, A390 + X vol. % Zro2 (X = 5, 10 and 15) composites have been fabricated through P/M technique.Design/methodology/approachAfter that the microstructural properties are tested by scanning electron microscope (SEM) analysis wear test is performed using pin-on-disc machine.FindingsThe wear conditions of applied load 30N and sliding velocity 1 m/s and track distance 1000m was followed. A390 + 15% Zro2 of surface of the composites unveiled greater hardness when compared with A390 alloy.Originality/valueA390 + 15% Zro2 exhibited superior wear resistance than that of the matrix alloy. Thus the material proves as an excellent solution for applications that requires high wear resistance.

Wear behaviour of copper/carbon nanotubes

2017 ◽  
Vol 69 (3) ◽  
pp. 342-347 ◽  
Author(s):  
Nor Shamimi Shaari ◽  
Jamaliah Md Said ◽  
Aidah Jumahat ◽  
Muhammad Hussain Ismail
Keyword(s):  
Carbon Nanotubes ◽  
Wear Test ◽  
Hardness Test ◽  
Copper Matrix ◽  
Wear Behaviour ◽  
Wear Depth ◽  
Wear Properties ◽  
Test Analysis ◽  
Content Type ◽  
Pure Cu

Purpose The purpose of this paper is to study the wear behaviour of copper matrix composites reinforced with carbon nanotubes (CNTs) prepared by powder metallurgy route. Design/methodology/approach The CNTs were treated by sulphuric acid and nitric acid to deagglomerate the CNTs prior mixing with copper powder. The composites comprised 0 to 4 Vol.% pristine CNTs (PCNTs) and also after acid-treated CNTs (ACNTs). The optimum value (pure Cu, 3 Vol.% PCNTs, 3 Vol.% ACNTs) evaluated by micro-hardness test was selected for wear test analysis. Findings The results showed that the enhancement of hardness, weight loss, coefficient of friction, wear depth and surface roughness (Ra) was due to the effect of homogenous distribution of ACNTs in Cu matrix and significant bonding compared to pure Cu and Cu-reinforced PCNTs. The scanning electron microscopy micrograph of worn surfaces and wear depth of the specimens also showed that the addition of ACNTs in Cu resulted in better wear performances. Originality/value CNTs were treated prior processing to improve hardness and wear properties of Cu/CNTs composites.

Sign in / Sign up

Export Citation Format

Share Document