Study on feasibility of producing an amorphous surface layer of Fe49Cr18Mo7B16C4Nb3 by pulsed Nd:YAG laser surface melting

Mojaver, Reza; Mojtahedi, Faezeh; Shahverdi, Hamid Reza; Torkamany, M.J.

doi:10.1016/j.apsusc.2012.09.167

Cited by 26 publications

(8 citation statements)

References 36 publications

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“…As the laser scanning speed increases, the cooling rate of the coating increases, and the amorphous content of the coating increases. When the scanning speed exceeds 45 mm/s, the amorphous content in the cladding layer reaches about 45% [18][19][20][21]. Ye et al [22] used the laser cladding technology to prepare amorphous coatings on the surface of 304 stainless steel with high amorphous content.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Wear Resistance of Fe-Based Amorphous Coatings

Gan

Liu

et al. 2020

Coatings

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Fe-based amorphous coatings were prepared on the surface of 45 steel substrates via supersonic plasma spraying and laser cladding. The corrosion and wear behavior of the two different coatings were investigated. Compared with supersonic plasma spraying, laser cladding resulted in coatings with a relatively denser structure, lower porosity, less cracks, and a good metallurgical bond with the substrate. Thanks to these properties, coatings produced by laser cladding exhibit a higher ability to resist uniform corrosion and better friction and wear performance than plasma-sprayed coatings.

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Section: Introductionmentioning

confidence: 99%

Corrosion and Wear Resistance of Fe-Based Amorphous Coatings

Gan

Liu

et al. 2020

Coatings

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“…Regarding the overlapping factor, in order to produce a superposition of consecutive pulses, the distance between two pulse centre points must be lower than the superficial melting diameter (Figure 2). In this case, the partial superposition interferes in the fusion zone (FZ) of the previous pulse, generating a continuous FZ of the weld seam [21,39,40]. Consequently, a high overlapped factor can be used to obtain a homogeneous weld bead.…”

Section: Introduction 1descriptionmentioning

confidence: 99%

Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

Chludzinski

Santos

Churiaque

et al. 2021

Metals

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Joining metallic alloys can be an intricate task, being necessary to take into account the material characteristics and the application in order to select the appropriate welding process. Among the variety of welding methods, pulsed laser technology is being successfully used in the industrial sector due to its beneficial aspects, for which most of them are related to the energy involved. Since the laser beam is focused in a concentrated area, a narrow and precise weld bead is created, with a reduced heat affected zone. This characteristic stands out for thinner material applications. As a non-contact process, the technique delivers flexibility and precision with high joining quality. In this sense, the present review addresses the most representative investigations developed in this welding process. A summary of these technological achievements in metallic metals, including steel, titanium, aluminium, and superalloys, is reported. Special attention is paid to the microstructural formation in the weld zone. Particular emphasis is given to the mechanical behaviour of the joints reported in terms of microhardness and strength performance. The main purpose of this work was to provide an overview of the results obtained with pulsed laser welding technology in diverse materials, including similar and dissimilar joints. In addition, outlook and remarks are addressed regarding the process characteristics and the state of knowledge.

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“…However, the high cost and difficulties in producing large dimensioned amorphous alloy restrict its wider applications in industry [4,5]. With the help of laser processing technology, the preparation of amorphous coating on the surface of traditional crystalline materials is an effective and feasible way to overcome the limitation of shape and size, reduce the material cost, and expand the application fields [6,7]. Amorphous coating can be obtained by applying a high power laser beam, with or without additional feeding material, on the surface of crystalline substrate at a very fast scanning speed, so that a thin layer of material is melted and cooled down at a very high rate.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of Temperature and Stress Field for Laser Cladded Nickel-Based Amorphous Composite Coatings

Qiu

Zheng

et al. 2018

Coatings

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In this paper, a nickel-based amorphous composite coating was obtained on the carbon steel surface by the laser cladding process. The thermal field and stress distribution were simulated by using ANSYS finite element software where the moving heat source and powder feeding were modelled by the “Element birth and death” method. The simulation results were verified by comparing the cross-sectional profile of fusion lines and X-ray stress measurements, respectively. The results on thermal field showed that the cooling rate of the coating could reach up to 10389.15 K/s and it gradually decreased from the outside surface to the interior, which promoted the formation of amorphous phase. The simulated stress field showed that the coating was in the state of tensile stress after cladding and the longitudinal stress was larger than the transverse stress. The coating was experienced with tensile plastic deformation along the laser scanning direction, which resulted in longitudinal residual stress. A higher stress concentration was occurred between the coating layer and substrate, which increased the susceptibility of crack formation. The test results on transverse residual stress were generally consistent with the simulation. On the contrary, the measured longitudinal stress was nearly close to zero, which was not in agreement with the model due to the formation of cracks.

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Study on feasibility of producing an amorphous surface layer of Fe49Cr18Mo7B16C4Nb3 by pulsed Nd:YAG laser surface melting

Cited by 26 publications

References 36 publications

Corrosion and Wear Resistance of Fe-Based Amorphous Coatings

Corrosion and Wear Resistance of Fe-Based Amorphous Coatings

Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

Finite Element Simulation of Temperature and Stress Field for Laser Cladded Nickel-Based Amorphous Composite Coatings

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