Influence of niobium on the microstructure and wear resistance of iron-based hardfacings produced by pre-placement technique—a novel approach

Singla, Yogesh Kumar; Arora, Navneet; Dwivedi, Dheerendra Kumar; Rohilla, Vinod

doi:10.1007/s00170-017-0708-0

Cited by 11 publications

(5 citation statements)

References 46 publications

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“…It is well known that the topography of the mating surfaces is the main factor that influences friction behaviour [5]. Over recent years, some surface texturing techniques have been developed, such as electrodeposition, mechanical machining, implantation of ions and laser ablation [6][7][8][9]. Laser texturing acts as an effective method to process surface textures due to its advantages of high efficiency, high accuracy, low price and well environmental adaptability [10].…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Zhang

Deng

Meng

et al. 2020

Surface Engineering

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An Nd:YAG laser was used to fabricate biomimetic hexagonal micro-textures on the mating surfaces of steel guideways. The influence of the micro-textures under grease lubrication on the tribological performances of guideways was determined using a guideway reciprocating sliding tester facility for different micro-textures distributions and orientations, loads and sliding speeds. Results revealed that biomimetic hexagonal micro-textures had a positive influence on the tribological properties of guideway when only one surface was textured, but they would play the opposite role if both of the mating surfaces were textured. The friction coefficient of one-side-textured guideways was reduced and the wear was improved in comparison to polished guideways. Moreover, on the condition of higher loads and sliding speeds, the micro-textures in which two sides of each hexagon are perpendicular to the sliding direction of the guideway showed the optimal tribological properties due to the hydrodynamic effect.

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Section: Introductionmentioning

confidence: 99%

Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Zhang

Deng

Meng

et al. 2020

Surface Engineering

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“…This reflects the good toughness of the weldments. Singla et al 22 also suggested that the presence of niobium in the hard-faced layer could enhance the toughness of the weldments. The microstructure of the weldments obtained from type 1(Figure 4(a)) and type 2 (Figure 4(b)) shows columnar grain structure.…”

Section: Resultsmentioning

confidence: 99%

Effect of vanadium and rare earth (RE) oxide hardfacing on mechanical and sliding wear behavior of Fe based alloy

Vidyarthy

Thapliyal

Dwivedi

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hardfacing is one of the preferred ways to prolong the life of machine components. In the current paper, efforts have been made to evaluate the flux composition on the hardness and wear behavior of a hard-faced surface. The shielded metal arc welding process was used to deposit the hardfacing layer over low carbon steel. Six different types of iron-based multicomponent flux compositions were developed using FeCr (25–30%), FeV (5%), FeMo (3–4 %), FeTi (2–3 %), Nb (3–4 %), and CeO2 (1–5 %) for hardfacing. The properties of the overlayer were examined using the microstructure study, hardness study, and abrasive wear test. Microstructural characterization was done using an optical microscope and field emission scanning electron microscope. X-ray diffraction was performed to examine the nature of precipitate formation. The worn-out surface and the debris were further examined, employing scanning electron microscopy to study the wear mechanism. The hard-faced surfaces revealed the presence of columnar and dendritic grains. Equiaxed grains were also observed in the sample, which was hard-faced with FeV. The hardness of the hard-faced surfaces was determined using the Vicker’s macro-hardness tester. A maximum hardness of 846.5 ± 2.5 HV was observed for weld overlay. The sliding wear behavior of the surface was investigated using an abrasive wear test performed on the pin-on-disk apparatus. The addition of vanadium to Fe-Cr-C hardfacing flux increased hardness and wear resistance between 3.5 and 6 times, respectively.

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“…Nb is important for obtaining hard surfaces due to its advantages in grain refinement [19] and matrix reinforcement. The potential for improving the anti-wear properties of these materials is related to their affinity for carbon and higher melting temperature compared to chromium [20]. Additionally, Nb increases the hardness (2000 HV) [11] of surfaces compared to those generated with chromium carbides (CrC) and iron carbides (Fe3C).…”

Section: Of 14mentioning

confidence: 99%

“…The literature on hard surfaces also refers to the welding parameter behavior such as in studies that determine the effect of the distance between the electrode and the workpiece, crucial for achieving the two critical points (long arc and short arc) [20] and the impact they may have on the microstructure, deposition efficiency, and heat of the deposited weld beads [27]. The welding deposition with the longest distance between the electrode tip and plate (too-long arc) is a condition beyond which the arc extinguishes.…”

Section: Of 14mentioning

confidence: 99%

The Effect of Niobium Addition on the Operational and Metallurgical Behavior of Fe-Cr-C Hardfacing Deposited by Shielded Metal Arc Welding

Perez,

Gutierrez,

Olaya

et al. 2024

JMMP

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Hardfacing is commonly used in parts recovery and in obtaining surfaces with improved properties. Within this field, it is important to analyze the effect of alloying elements on the properties of the deposited layers. One of the critical parameters affecting alloying performances in SMAW is improper arc length. This article examines the effect of the addition of niobium in different quantities (0, 2, 4, 6, and 8% by weight) to the electrode coating in Fe-Cr-C shielded metal arc welding (SMAW), with short and long arc lengths, on the operational process efficiency, dilution, arc energy, microstructure, and microhardness of the deposited layers. A decrease in operational process efficiency and dilution was found with increases in niobium content. On the other hand, it was found that adding niobium leads to a refinement in chromium carbide sizes, directly affecting the hardness of the obtained deposits. There is a direct relationship between the arc energy, with both short and long arc lengths, leading to a tendency to decrease the dilution in the obtained hardfacing.

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Influence of niobium on the microstructure and wear resistance of iron-based hardfacings produced by pre-placement technique—a novel approach

Cited by 11 publications

References 46 publications

Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Tribological performance of steel guideway with biomimetic hexagonal micro-textures

Effect of vanadium and rare earth (RE) oxide hardfacing on mechanical and sliding wear behavior of Fe based alloy

The Effect of Niobium Addition on the Operational and Metallurgical Behavior of Fe-Cr-C Hardfacing Deposited by Shielded Metal Arc Welding

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