Effect of Nb content on microstructure and properties of laser cladding FeNiCoCrTi0.5Nbx high-entropy alloy coating

Zhang, Ying; Han, Tengfei; Xiao, Meng; Shen, Yuan

doi:10.1016/j.ijleo.2019.163316

Cited by 42 publications

(10 citation statements)

References 22 publications

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“…The addition of alloying elements is considered to be an effective means of optimizing steel. Cautaerts et al demonstrated that alloying steel with appropriate elements can improve the structural and mechanical properties of steel to varying degrees . The method of improving HSS through alloying has been applied for a long time.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tantalum on the Microstructure and Mechanical Properties of M2 High‐Speed Steel Prepared by Laser Additive Manufacturing

Wang

Chen

Zhang

2020

steel research int.

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Herein, M2 high‐speed steel (HSS) samples with different Ta contents are prepared on #45 steel substrates by a laser additive manufacturing process. The microstructure and mechanical properties of the samples are systematically studied under five different Ta contents. Scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), and X‐ray diffraction (XRD) analyses show that the microstructures of the samples comprise equiaxed crystals, cellular dendritic structures, and reticular eutectic carbides. The samples are mainly composed of supersaturated martensite, retained austenite, and MxCy‐type carbides. The microstructures and mechanical properties of the samples are greatly affected by Ta alloying. After the M2 HSS is alloyed with 1 and 2 wt% Ta, obvious grain refinement occurs and the amount of retained austenite decreases; as a result of these microscale changes, the microhardness increases by 2.9% and 7.2%, the impact toughness increases by 12.4% and 17.4%, and the wear resistance increases by 75.74% and 25%.

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Section: Introductionmentioning

confidence: 99%

Effect of Tantalum on the Microstructure and Mechanical Properties of M2 High‐Speed Steel Prepared by Laser Additive Manufacturing

Wang

Chen

Zhang

2020

steel research int.

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“…There are abundantly detailed substructures and slight misorientations in most grains induced by the agitation of the laser beam and flow. [ 19 ] The grains in the center FeCr layer have a stronger orientation on Y ‐axis, and the grains in the top FeCr layer have a stronger orientation on X ‐ and Z ‐axis, respectively.…”

Section: Resultsmentioning

confidence: 99%

Laser Cladding Fe/FeCr Coatings on Continuous Casting Cu Mold

et al. 2022

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The crystallizer is the key component controlling the solidification process and is mainly made of pure Cu. The poor wear resistance and oxidation resistance of pure Cu limit the working life of the Cu crystallizer. Herein, Fe/FeCr coatings are designed and successfully fabricated on the Cu substrate by laser cladding technique. The composition, microstructure, mechanical, and thermal properties of the Cu–Fe/FeCr composite are investigated. The coating is composed of a body‐centered cubic Fe–Cr alloy phase. The grains on the surface are equiaxed grains with an average diameter of 2 μm. The coating exhibits a tensile strength 3 times of Cu substrate and well elongation thanks to the fine‐grain structure. The interface between coating and substrate is metallic bonding and possesses a shear strength of as high as 200 MPa. The coating shows obvious advantages in wear resistance and antioxidation at high temperatures in comparison to Cu substrate. The laser cladding Cu–Fe/FeCr composite is promising to prolong crystallizer life for continuous casting.

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“…From above results, it was seen that the Ni-based coating with Nb mass fraction of 3% possessed a relatively compact, refined, and uniform microstructure, while the increasing Nb incorporation promoted the production of Laves phase and growth of dendrites. This was because that the Laves phase in the eutectic structure was easily attached to the preceding eutectic Laves phase, 23 which gradually aggregated, grew, and eventually led to the Laves morphology change from the distribution of point block dispersion to strip and finally, to region.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and anti-corrosion performance of laser cladded Nb-modified Ni-based alloy coatings

Chen

Wang

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this work, Ni-based alloy coatings incorporated with Nb mass fractions of 0%, 3%, 6%, and 9% were successfully fabricated by laser cladding. The morphology, chemical composition, and phases of the obtained Nb-modified Ni-based coatings were characterized, and the effects of Nb contents on their electrochemical performance and immersion rates in 3.5 wt% NaCl solution were analyzed. The results show that the Ni-based coating with low Nb exhibits the most compact and refined microstructure, the best electrochemical passivation, and the lowest immersion corrosion rate of 3.30 × 10−3 mm/year. However, with increasing Nb content, the Laves phase is accumulated, and dendritic growth is promoted, which significantly decreases the coating passive stability and worsens the anti-corrosion performance.

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Effect of Nb content on microstructure and properties of laser cladding FeNiCoCrTi0.5Nbx high-entropy alloy coating

Cited by 42 publications

References 22 publications

Effect of Tantalum on the Microstructure and Mechanical Properties of M2 High‐Speed Steel Prepared by Laser Additive Manufacturing

Effect of Tantalum on the Microstructure and Mechanical Properties of M2 High‐Speed Steel Prepared by Laser Additive Manufacturing

Laser Cladding Fe/FeCr Coatings on Continuous Casting Cu Mold

Microstructure and anti-corrosion performance of laser cladded Nb-modified Ni-based alloy coatings

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