Characterization of Fe-Nb-B Base Hardfacing of Steel

Kılınç, B.; Çeğil, Özkan; Abakay, E.; Şen, Uğur; Şen, Şaduman

doi:10.12693/aphyspola.125.656

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…Among these techniques, gas tungsten arc (GTA) welding has an important place with advantages such as high deposition rate, high maneuverability, large-scale availability, low cost and compatibility with a wide variety of materials [4][5][6][7]. In this regard, the desired composition powder and the surface of substrate material are melted simultaneously by the GTA welding process and a layer of alloy that is metallurgically bonded to the base material is formed by solidification [8,9]. Titanium borides have many advantages such as high melting point, hardness, wear resistance and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Effect of titanium content on the microstructure and wear behavior of Fe(13-x)TixB7 (x=0-5) hardfacing alloy

Kılınç

Kocaman

Şen

et al. 2022

J min metall B Metall

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In this study, the effects of titanium addition on microstructure, hardness and wear rate of Fe(13-x)TixB7 (x = 0, 1, 2, 3 and 5) based hard surface alloy layers formed by gas tungsten arc (GTA) welding method were investigated. As a result of the microstructure studies and phase analysis, it was determined that the structures of the coating layers consisted of ?-Fe, ?Fe+Fe2B eutectic, ?-Fe+Fe2Ti eutectic and hard TiB2 phases. In the hard surface alloy layer, as the amount of titanium was increased, the TiB2 phase density formed in the system increased and it was observed that rod-like and long sharp-edged phases formed from the equiaxed structure. As a result of wear tests performed at different loads, it was determined that the addition of titanium reduces the wear rates in the coating layers. In addition, scanning electron microscopy (SEM) images of the worn surfaces showed that the wear mechanisms were adhesive and oxidative.

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Section: Introductionmentioning

confidence: 99%

Effect of titanium content on the microstructure and wear behavior of Fe(13-x)TixB7 (x=0-5) hardfacing alloy

Kılınç

Kocaman

Şen

et al. 2022

J min metall B Metall

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“…Ceramic coatings based on transition metal nitrides and carbides such as TiN, TiC, TiCN, TiAlN, CrN and CrAlN are characterized by high hardness, good wear and corrosion resistance and good thermal stability. They can be deposited by different PAPVD (Plasma Assisted Physical Vapour Deposition) techniques such as magnetron sputtering, cathodic arc evaporation and pulsed laser deposition [7]. In Argentina, a company called Coating.Tech is applying the Plasma Enhanced Magnetron Sputtering PVD technique to deposit hard coatings such as: DLC, TiN and TiAlN in order to improve surface properties of different components [8].…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviour of a hyperlox coating deposited over nitrided martensitic stainless steel

Bähler¹,

Prieto²,

Tuckart³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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Martensitic stainless steels are often used in machine components, where are exposed to different solicitations that require good surface properties. Different treatments such as plasma nitriding or coating deposition could be used to improve their wear and corrosion resistance, even combining both methods. In this work, the tribological behaviour of a TiAlN coating with a top layer of TiN, called “Hyperlox Gold”, deposited over both nitrided and non-nitrided martensitic stainless steels by PVD PEMS (Physical Vapour Deposition Plasma Enhanced Magnetron Sputtering) was studied. Quenched and tempered AISI 420 martensitic stainless steel was used as base material. A group of samples were plasma nitrided and were subsequently coated. Microstructure of the nitrided layer and the coating were analysed by SEM and XRD. Nanohardness was measured with a Berkovich tip. Wear behaviour was evaluated using pin-on-disk tests (ASTM G99 standard) under three different loads (5 N, 7 N and 10 N) with an alumina ball as a counterpart. Adhesion was evaluated using dynamic conditions such as variable load scratch test and under static condition with Rockwell indentation tests (using 60 kg, 100 kg, and 150 kg). Overall thickness of the coatings was 3.7 μm and their hardness about of 32 ± 2 GPa. The nitrided layer was about 10 μm thick, with a hardness of 17 ± 1 GPa. The coating had good mechanical resistance in sliding adhesive wear conditions under low loads and good adhesion was revealed in a static condition. The presence of a nitrided layer improved the wear behaviour under high loads and the adhesion in dynamic conditions. Critical load was higher for the duplex sample than the coated samples. This work is important for the development of the Argentinian industry where the use of coatings is not largely extended, especially with martensitic stainless steels as substrates.

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“…Interchangeable modulated elements are usually made of low alloyed Mn-steel, they are wear protection layers deposited by a welding process such as: shielded metal arc welding using special coated electrodes, submerged arc welding with adequate wire or tape, flux cored arc welding under protective gas, tungsten inert gas welding using special rods or wires, oxy-acetylene and more [1][2][3][4][5][6][7][8][9][10][11][12][13]. Each of these processes has advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

“…Fe-25% Cr-1% V alloys are commonly used for the "wear additions" of components that operate in highly severe working conditions, with abrasion under high pressure combined with corrosion and mechanical fatigue. They are used for the re-welding of excavator teeth [11], of knives for cutting paper products [12][13][14][15][16], blades for smoothing plastics and more.…”

Section: Introductionmentioning

confidence: 99%

Efficient Process to Develop Self-Sharpening Active Elements

Geantă

Voiculescu

Binchiciu

et al. 2020

AMR

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The paper presents technologies for the manufacturing of modulated bi-metal elements, used as interchangeable reinforcement, according to patent RO129865. The bi-metal was developed by surface build-up of functional layers that have increased hardness, on a low alloyed steel substrate, so as to ensure maximum lifespan in exploitation. Welded layers deposited on active areas has a thickness of 3 mm and have high hardness (about 50-60 HRC) in order to ensure a good resistance to wear by abrasion, possibly combined with fatigue, erosion or corrosion. The modulated elements sizes are equal to or higher than the wear additions, up to 10%, being dimensioned on the principles of preventive-repetitive maintenance. The interchangeable bi-metal elements are welded on the steel components of machines, used for hot or cold processing of parts and semi-finished products manufactured in series.

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Characterization of Fe-Nb-B Base Hardfacing of Steel

Cited by 5 publications

References 18 publications

Effect of titanium content on the microstructure and wear behavior of Fe(13-x)TixB7 (x=0-5) hardfacing alloy

Effect of titanium content on the microstructure and wear behavior of Fe(13-x)TixB7 (x=0-5) hardfacing alloy

Tribological behaviour of a hyperlox coating deposited over nitrided martensitic stainless steel

Efficient Process to Develop Self-Sharpening Active Elements

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