Microstructure and wear resistance of in-situ TiC–Al2O3 particles reinforced Fe-based coatings produced by gas tungsten arc cladding

Sharifitabar, M.; Khaki, Jalil Vahdati; Sabzevar, Mohsen Haddad

doi:10.1016/j.surfcoat.2015.11.019

Cited by 48 publications

(15 citation statements)

References 24 publications

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“…In the case of gas tungsten arc process, heat transfer occurs due to conduction and convection, and the molten pool is driven due to the various effects of the electromagnetic force, buoyancy force, arc drag force, and surface tension [24]. In the arc process, since the reinforcing particles were not mixed in the depth direction, and the flow at the surface was governed by the driving forces, it was difficult to distribute the reinforcing particles homogeneously in the depth direction [8,25]. The laser process had a higher energy density and faster process than the arc process, so the laser process could be a favorable environment for transporting and dispersing reinforcing particles in the depth direction.…”

Section: Resultsmentioning

confidence: 99%

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Microstructural Characterization of TiC-Reinforced Metal Matrix Composites Fabricated by Laser Cladding Using FeCrCoNiAlTiC High Entropy Alloy Powder

et al. 2021

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TiC-reinforced metal matrix composites were fabricated by laser cladding and FeCrCoNiAlTiC high entropy alloy powder. The heat of the laser formed a TiC phase, which was consistent with the thermodynamic calculation, and produced a coating layer without interfacial defects. TiC reinforcing particles exhibited various morphologies, such as spherical, blocky, and dendritic particles, depending on the heat input and coating depth. A dendritic morphology is observed in the lower part of the coating layer near the AISI 304 substrate, where heat is rapidly transferred. Low heat input leads to an inhomogeneous microstructure and coating depth due to the poor fluidity of molten pool. On the other hand, high heat input dissolved reinforcing particles by dilution with the substrate. The coating layer under the effective heat input of 50 J/mm2 had relatively homogeneous blocky particles of several micrometers in size. The micro-hardness value of the coating layer is over 900 HV, and the nano-hardness of the reinforcing particles and the matrix were 17 GPa and 10 GPa, respectively.

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Section: Resultsmentioning

confidence: 99%

“…MMC coatings are prepared using various processes, such as gas tungsten arc cladding (GTAC) [7,8], plasma transferred arc [9], thermal spray [10], etc. In particular, the coatings fabricated using laser cladding have the advantages of a fast cooling rate, narrow heataffected zone, and strong interfacial bonding.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization of TiC-Reinforced Metal Matrix Composites Fabricated by Laser Cladding Using FeCrCoNiAlTiC High Entropy Alloy Powder

et al. 2021

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“…Given their great stiffness, toughness, high specific strength, and high wear resistance, major attention is being directed towards metal matrix composites (MMCs) reinforced by ceramic. These composites are also associated with low costs of fabrication, adequate high-temperature stability, and desirable isotropic features [8]. They may also be applied as high-temperature structural compounds and wear-resistant parts.…”

Section: Introductionmentioning

confidence: 99%

In-situ fabrication of TiC-Al2O3 and TiB2-TiC-Al2O3 composite coatings on 304 stainless steel surface using GTAW process

Bahramizadeh¹,

Nourouzi²,

Aval³

2020

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The purpose of this study was to improve the performance of 304 stainless steel by applying a wear-resistant coating. For this purpose, in-situ composite coatings of TiC-Al2O3, as well as TiB2-TiC-Al2O3, were applied on the surface of 304 stainless steel by using combining, welding and self-combustion synthesis with different current welding. The microstructural investigations of the coated layers showed that due to the high incoming welding temperature in all the samples, by performing the combustion synthesis reaction, significant reinforcing particles were formed on the 304 stainless steel surface. Also, in all heat inputs, cubic titanium carbide particles formed inhomogeneously on Al2O3 particles or spontaneously in the austenitic matrix of 304 stainless steel. The reinforcing of TiC and TiB2 particles formation in both 3TiO2-4Al-3C and 3TiO2-4Al-B4C layers led to an increase in surface hardness and wear resistance up to 2.5 versus the substrate.

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“…With the addition of ceramicbased particles such as carbides and borides into the iron-based matrix, abrasion resistance and material strength increase [7][8][9]. For example, steel matrix composites reinforced with ceramic particles as a protection against wear and corrosion are recommended in chemical and processing industries [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Kaptanoğlu¹,

Eroğlu²

2017

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In this study, four hardfacings, reinforced with in-situ synthesized TiB2 particles, were cladded by tungsten inert gas (TIG) welding, applying flux-cored wires with varying Fe-Ti and Fe-B content. Microstructural examination, macrohardness and microhardness measurements and abrasive wear tests were performed. Morphology of TiB2 changed from a small-sized hexagonal and rectangular to a coarse plate-like one with the increasing common proportion of titanium and boron. Accordingly, hardness and wear resistance increased linearly with the changing titanium and boron content in hardfacings.K e y w o r d s: TiB2, wear, microstructure, hardfacing, flux-cored wire

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Microstructure and wear resistance of in-situ TiC–Al2O3 particles reinforced Fe-based coatings produced by gas tungsten arc cladding

Cited by 48 publications

References 24 publications

Microstructural Characterization of TiC-Reinforced Metal Matrix Composites Fabricated by Laser Cladding Using FeCrCoNiAlTiC High Entropy Alloy Powder

Microstructural Characterization of TiC-Reinforced Metal Matrix Composites Fabricated by Laser Cladding Using FeCrCoNiAlTiC High Entropy Alloy Powder

In-situ fabrication of TiC-Al2O3 and TiB2-TiC-Al2O3 composite coatings on 304 stainless steel surface using GTAW process

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

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