Wear performance of Fe-Cr-C-B hardfacing coatings: Dry sand/rubber wheel test and ball-on-disc test

Durmuş, Hülya; Çömez, Nilay; Gül, Canser; Yurddaşkal, Melis; Yurddaşkal, Metin

doi:10.1016/j.ijrmhm.2018.07.006

Cited by 38 publications

(14 citation statements)

References 14 publications

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“…This situation is compatible with the Fe-Ti-B equilibrium diagram and is similar to the study of Zdziobek et al [22]. in their study, they stated that the hardness of hard surface coatings depends largely on the fraction of primary hard phases and microstructure [23]. Gou et al found that the hardness of the primary carbides was much higher than that of the eutectic matrix, and found that the increase in the volume fraction of primary carbides / borides increased the hardness of hard surface alloys [24].…”

Section: Microstructural and Phase Analysissupporting

confidence: 90%

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

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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: Microstructural and Phase Analysissupporting

confidence: 90%

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

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Şen

et al. 2022

J min metall B Metall

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“…Durmus et al investigated the wear resistance of iron-based hard-faced coatings that were produced with Fe-Cr-C-B- and Fe-Cr-C-based filler metal (FM) wires, according to the ball-on-disc and dry sand/rubber wheel wear tests [ 6 ]. Iron-based hard facing alloys were coated on St37 steel by arc welding without using a shielding gas.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Welding Type and Filler Metal Influence on Performance of a Regenerated Gear

et al. 2021

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This paper presents the results of voluminous experimental investigations conducted to analyze the influence of the welding procedure on the performance of regenerated gears. Cylindrical spur gears were tested, both newly manufactured and regenerated, in two fundamentally different ways: by hard facing (surfacing) with the “hard” filler metal (DUR 600-IG) and with the “soft” filler metal (EVB2CrMo) with subsequent cementation and quenching. The regeneration procedures were defined and executed, while, subsequently, the microstructure and microhardness of the hard-faced layers were established and measured, followed by checking the durability of the hard-faced teeth flanks. Finally, techno-economic analysis was performed to establish the rationality of the conducted regenerations, i.e., the costs of regenerated and newly manufactured teeth were compared. Based on the results of the conducted investigations, it was possible to establish the influence of the welding type on the performance characteristics (primarily the service life) of the regenerated gears. For individual reparatory hard facing, the procedure with the “hard” filler metal exhibited better characteristics, while for batch reparation of numerous damaged gears, the reparation with the “soft” filler metal, followed by cementation and heat treatment, might be more convenient.

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“…Durmuş ve ark., kaplama tabakasında bulunan sert borür ve karbür fazlarının hacim oranının artmasıyla, aşınma direncinin arttığını, bu sebeple kaplamanın toplam sertliğinin, aşınma direnci üzerinde belirleyici bir rolü olduğunu belirtmişlerdir [40]. Mikroyapı açıklamalarında belirtildiği gibi kaplama tabakasında, krom oranın artmasına bağlı olarak, yüksek sertlik değerlerine sahip metal borür içeren ötektik yapısının arttığı görülmektedir.…”

Section: Aşınma Ve Sertlik (Wear and Hardness)unclassified

Krom içeriğinin Fe(18-x)CrxB2 (X=3,4,5) sert dolgu elektrotunda mikroyapı, aşınma ve korozyon davranışı üzerindeki etkisi

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et al. 2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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 Coatings of Fe(18-x)CrxB2 (x=3,4,5) based hardfacing electrodes on steel substrate.  Microstructural development of coatings formed on steel surface.  Hardness, wear and corrosion behavior of coatings depending on chromium ratio. Figure A. Schematic illustration of coating process Purpose: The aim of this study is to investigate the effect of chromium content on coating carried out with Fe(18-x)CrxB2 (x=3,4,5) hardfacing electrode. Theory and Methods:Electrode cover composition was prepared with ferro-chromium, ferro-bor and various flux components as starting material. Then the mixed powders were compressed in a mold to form electrode and dried a certain period. The coating on to an AISI 1010 steel surface was carried out by using these electrodes. The coating samples were prepared according to standard metallographic operations and The microstructure, hardness, wear and corrosion behavior of coating was investigated. Results:For each sample, the average coating layer thickness ranged from 4 to 6 mm and has a smooth surface and porosity free topography. It has been determined that a-(Fe-Cr) phase and eutectic phases in coatings which were carried out according to changing chrome ratio. In the coating containing 15% chromium, primary eutectic (a-Fe,Cr)+orthorhombic (Cr,Fe)2B structure surrounded by secondary eutectic (a-(Fe,Cr)+tetragonal (Fe,Cr)2B phase and ın the coating containing 20% and 25% chromium, primary eutectic (a-Fe,Cr) surrounded by chromium-rich boride (α-(Fe,Cr)+ortorombik (Cr,Fe)2B) were observed. X-ray diffraction analysis shows that the system includes -(Fe,Cr)+orthorhombic (Cr,Fe)2B phases as well as tetragonal (Cr,Fe)2B and (Fe,Cr)3(C,B) phases. Hardness values were measured as 65 (+/-0.4) HRC, 65.3 HRC (+/-0.3) and 67.5 HRC (+/-0.5), respectively, according to the increasing chromium ratio. The lowest wear rate was found 2.32x10 -5 (mm 3 /m) in 3N load for the electrode with the Fe13Cr5B2 composition and the highest value was found to be 8.16x10 -5 (mm 3 /m) for electrode with Fe15Cr3B2 composition at 9N load. In addition, the Icor value decreased according to the increasing amount of chromium and was measured as 2.166 µA/cm 2 and 1.615 µA/cm 2 and 1.242 µA/cm 2 , respectively. It was determined that the Ecor value increased with increasing chrome ratio and reached -473.991 mV, -450.056 mV and -347.157 mV respectively. Conclusion:Due to the increase in the chromium ratio in the coating layers, the amount of boride in the eutectic structure, which causes better mechanical and metallurgical properties, has increased. Accordingly, with the increase of Cr ratio in the coating layer, hardness values increased and wear rate values decreased. In addition, the corrosion resistance of the coatings increased with the increase of Cr ratio.

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Wear performance of Fe-Cr-C-B hardfacing coatings: Dry sand/rubber wheel test and ball-on-disc test

Cited by 38 publications

References 14 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

Analysis of the Welding Type and Filler Metal Influence on Performance of a Regenerated Gear

Krom içeriğinin Fe(18-x)CrxB2 (X=3,4,5) sert dolgu elektrotunda mikroyapı, aşınma ve korozyon davranışı üzerindeki etkisi

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