Evaluation of Abrasive Wear Resistance of Fe-Cr-C Hardfacing Alloys Deposited on Active Components of the Agricultural Components

2014 ◽  
Vol 1029 ◽  
pp. 188-193
Author(s):  
Ramona Monica Dobra ◽  
Nicolae Farbas ◽  
Doru Romulus Pascu
Keyword(s):  
Abrasive Wear ◽  
Low Carbon Steel ◽  
Base Material ◽  
Surface Characteristics ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Welding Parameters ◽  
Low Carbon ◽  
Active Components ◽  
Abrasive Wear Behaviour

In most of the engineering applications, such as mining, agriculture, metallurgy, the equipments fail due to abrasive wear. Hardfacing is one of the most economical and most widely used methods of improving surface characteristics of engineering equipments (wear, corrosion) without changing the bulk properties of the components.Fe-Cr-C hardfacing alloys are well known for their excellent performances under severe wear conditions. The wear behaviour of hardfacing alloys depends on their chemical composition, on the microstructure obtained after welding, of the welding technology, respectively the welding parameters which strongly influence, for example, the dilution with the base material or formation of precipitated hard phases.The aim of this study was to characterize the microstructure of Fe-Cr-C hardfacing alloys and to investigate their abrasive wear behaviour. The research has been carried out using four types of Fe-Cr-C hardfacing alloys (8 12, 16 and 20 % Cr). The alloys were deposited on the low-carbon steel S355 JR by manual arc welding method. The abrasion wear testing was carried out using the Taber Rotary Abraser Equipment. The microstructure characterization and surface analysis were performed using optical microscopy and HV 10 hardness tests.

scholarly journals Abrasive wear of high chromium Fe-Cr-C hardfacing alloys

2008 ◽  
Vol 54 (No. 4) ◽  
pp. 192-198 ◽  
Author(s):  
R. Chotěborský ◽  
P. Hrabě ◽  
M. Müller ◽  
J. Savková ◽  
M. Jirka
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Gas Metal Arc Welding ◽  
Low Carbon Steel ◽  
Abrasive Wear Resistance ◽  
Wear Testing ◽  
Low Carbon ◽  
Metal Arc Welding ◽  
Primary Carbides ◽  
Microstructure Effect

Weld deposits are one of the most used economical ways of the wear resistance increase. The study compares the characteristics of the overlay material welded-on and the abrasive wear resistance. The research has been carried out using hardfacing alloys reinforced with primary chromium carbides and complex carbides. The overlay material was deposited on the low-carbon steel S235JR using the gas metal arc welding (GMAW) method. Four different commercial overlay materials were studied in terms of the microstructure effect. The abrasion wear testing was carried out using the abrasive cloth of grit 120 according to CSN 01 5084. The microstructure characterisation and surface analysis were made using optical and scanning electron microscopy. The results illustrate a significant effect of primary carbides on the abrasive wear resistance of weld deposits.

Effects of Laser Welding Conditions on Toughness of Dissimilar Welded Components

2006 ◽  
Vol 5-6 ◽  
pp. 375-380 ◽  
Author(s):  
E.M. Anawa ◽  
Abdul Ghani Olabi
Keyword(s):  
Impact Strength ◽  
Laser Welding ◽  
Low Carbon Steel ◽  
Base Material ◽  
Welding Process ◽  
Dissimilar Materials ◽  
Welding Parameters ◽  
Taguchi Approach ◽  
Low Carbon ◽  
The Impact

Welding dissimilar materials become inevitable in engineering industries. There are many issues/problems associated with the welding of dissimilar materials, related to the welding process and its parameters. The current work investigates the effect of laser welding conditions on the toughness of dissimilar welded components. In this study, CO2 laser welding has been successfully applied for joining 316 stainless steel with low carbon steel (F/A). Design of experiment techniques has been used for different effective welding parameters (laser power, welding speed, and focus position) to optimize the dissimilar F/A joints in terms of its mechanical properties. Taguchi approach was applied to optimize the welding parameters. Three factors with five levels each (L-25) were employed in these models. Impact strength was measured at room temperature by using the universal pendulum impact tester. The results were compared with the impact strength of the base material. The results were analysed using ANOVA and S/N ratio for optimal parameters combination. It is evident that Taguchi approach has decreased the number of experiments without negative effects on the result.

Effect of oxidation on abrasive wear behaviour of titanium carbide based composites in silica medium

2010 ◽  
Vol 16 (4) ◽  
pp. 264 ◽  
Author(s):  
M Antonov ◽  
I Hussainova ◽  
J Pirso ◽  
K Juhani ◽  
M Viljus
Keyword(s):  
Titanium Carbide ◽  
Abrasive Wear ◽  
Wear Behaviour ◽  
Abrasive Wear Behaviour

Characterization of the Resistance of Pyrolytic Carbon to Abrasive Wear

1995 ◽  
Vol 18 (12) ◽  
pp. 777-785 ◽  
Author(s):  
E. Vitale ◽  
P. Giusti
Keyword(s):  
Abrasive Wear ◽  
Heart Valves ◽  
Prosthetic Heart Valve ◽  
Wear Testing ◽  
Limiting Factors ◽  
Wear Behaviour ◽  
Biomedical Devices ◽  
Wear Rates ◽  
Biological Compatibility ◽  
Particle Contamination

Si-alloyed pyrolitic carbon (PyC) is currently employed in many biomedical devices, due to its fairly good biological compatibility and non biodegradeability. For prosthetic heart valve applications, required to operate safely for many years, the resistance to abrasive wear is one of the limiting factors which must be accurately evaluated. The present study reports on abrasive wear testing of Ti/PyC and PyC/PyC sliding couples. For both couples it was found that the wear behaviour can be shifted from a low wear regime, characterised by very small wear rates and reduced scatter, to a high wear regime, characterised by high wear rates and high scatter, due to the presence of particle contamination coming from the environment and/or from the specimen polishing process. Actual biomedical devices, particularly heart valves, should not experience the high wear regime, due to the absence of any hard particle contamination source. The wear observed in these items is in fact minimal and may depend on mechanisms other than abrasive wear. In these conditions the experimental evaluation of the wear behaviour should definetely be performed by tests on actual devices.

Anisotropic abrasive wear behaviour of bamboo (Dentrocalamus strictus)

Wear ◽  
2007 ◽  
Vol 262 (9-10) ◽  
pp. 1031-1037 ◽  
Author(s):  
Navin Chand ◽  
U.K. Dwivedi ◽  
S.K. Acharya
Keyword(s):  
Abrasive Wear ◽  
Wear Behaviour ◽  
Abrasive Wear Behaviour
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