Laser nitriding and carburization of materials

Höche, Daniel; Kaspar, Jörg; Schaaf, Peter

doi:10.1016/b978-1-78242-074-3.00002-7

Cited by 18 publications

(14 citation statements)

References 98 publications

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“…in-walled metal parts manufactured from steel, which are most often stressed by bending load, are modeled using finite element analysis (FEA) [11]. e simulation of the elastoplastic deformation of the plates under bending load was done using a device model analogous to that used in metal bend tests according to ISO 7438:2016 [30].…”

Section: Simulation Of Elastoplastic Bending Of Metal Sheetmentioning

confidence: 99%

“…e stress-strain curves of the basic metal and the treated layer are provided from experimental data, but the dependences of the nonlinear part of the curves are simplified to linear, which is traditionally used for the Bilinear Isotropic Hardening model; then, only the yield strength and the tangent modulus of the material are used as input parameters ( Figure 4). e total deformation in the model is represented as the sum of the elastic and plastic deformation components [11,33]:…”

Section: Simulation Of Elastoplastic Bending Of Metal Sheetmentioning

confidence: 99%

“…Laser treatment is one popular technique of surface modification, which is designed to change the microstructure of metals through controlled heating and cooling. Laser surface treatment technologies (laser hardening, nitriding, and carburization) allow the enhancement of various properties, such as the surface strength, hardness, roughness, coefficient of friction, chemical resistance, and corrosion resistance of the surface of various metals [11]. Laser treatment technologies provide local heating, high-temperature gradients, and achievable cooling speed (10 5 -10 6°S / s) due to thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Laser Treatment for Strengthening of Thin Sheet Steel

Kapustynskyi

Višniakov

2020

Advances in Materials Science and Engineering

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This paper presents the results of computer simulations and experimental studies, aiming to increase the mechanical strength of sheet metal parts manufactured from high-quality structural carbon steel by means of local laser processing. The effects of laser processing on the strength of steel sheet plates and their ability to resist bend load after laser treatment were studied. The results of bending experiments and computer simulations of elastoplastic deformation establish that local laser processing with surface melting can be used to increase the mechanical strength of structural elements made from thin sheet steel C22E and to decrease its deflection under similar workload, as an alternative to the application of complex geometric shapes, additional strengthening elements, or heat treatment.

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Section: Simulation Of Elastoplastic Bending Of Metal Sheetmentioning

confidence: 99%

Section: Simulation Of Elastoplastic Bending Of Metal Sheetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Laser Treatment for Strengthening of Thin Sheet Steel

Kapustynskyi

Višniakov

2020

Advances in Materials Science and Engineering

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“…Transformation hardening, nitriding and carburizing by laser allows changes to the microstructure and properties such as strength, hardness, roughness, coefficient of friction, wear resistance, chemical resistance and corrosion resistance of the surface of various metals [ 9 , 10 ]. The typical thickness of the hardened layer after laser transformation hardening by CO 2 laser, without melting of the surface, usually does not exceed 0.3 mm, applying a laser pulse of 0.15 mm [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Feasibility Evaluation of Local Laser Treatment for Strengthening of Thin-Walled Structures from Low-Carbon Steel Subjected to Bending

et al. 2020

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This paper is devoted to investigating numerically, by finite element analysis (FEA), and analytically the influences and effects of laser processing of the surface of thin-plate, low-carbon structural steel. The plate mechanical properties—axial and flexural stiffnesses, force-deflection behavior and cross-section force-strain behavior—are investigated after different laser treatments. An analytical methodology of the estimation of the cross-section area of the laser-processed metal is also proposed in the present article, that can be applied to choosing the reasonable distance between the centers of the laser-processed tracks. The methodology takes into account the width of the laser-processed tracks and the distances between these tracks. The experimental, finite element numerical and analytical analyses showed that the laser treatments of the surface of the steel plate increase the yield point of the laser-processed metal and the axial and flexural stiffnesses of the plate.

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“…However, traditional carburizing and nitriding may cause the change of microstructures in the alloy, while the bonding strength between the cladding layer and substrate is always very poor when using chemical vapor deposition (CVD) method and physical vapor deposition (PVD) method [8]. The processing times of conventional coating techniques are always long [9]. Laser cladding technology is a newly developed surface modification technology, which can rapidly melt and solidify the pre-mixed powders to obtain a cladding layer with excellent properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different ZrN Addition on Microstructure and Wear Properties of Titanium Based Coatings by Laser Cladding Technique

Wang

et al. 2019

Coatings

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In order to improve the wear resistance of TC11 titanium alloy, a mixture of ZrN (10 wt.%, 20 wt.%, 30 wt.%, and 40 wt.%) and TC11 alloy powders are laser cladded on a forged TC11 substrate. The microstructure and wear property of coatings are systematically analyzed. The results show that the microstructure of sample with 10 wt.% ZrN addition has a very fine α + β two-phase microstructure, powders of ZrN are fully melted with no new phase appearance. By increasing the amount of ZrN to 20 wt.%, new phases of TiN0.3 precipitate with the dendritic morphology in the coating. A further increase in ZrN to 30 wt.% and 40 wt.% do not significantly change the microstructure of the cladded layer but increase the microhardness significantly, phases of TiN form with further enhancement of coating hardness. At the bottom of the cladded layer, the morphology of TiN0.3 and TiN precipitations changes into a spherical shape with small size. However, the wear performance of the coatings gradually reduces due to the increase of brittleness, and the superior wear properties of the coating are achieved when sample consisted of 20 wt.% ZrN.

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Laser nitriding and carburization of materials

Cited by 18 publications

References 98 publications

Laser Treatment for Strengthening of Thin Sheet Steel

Laser Treatment for Strengthening of Thin Sheet Steel

Feasibility Evaluation of Local Laser Treatment for Strengthening of Thin-Walled Structures from Low-Carbon Steel Subjected to Bending

Effect of Different ZrN Addition on Microstructure and Wear Properties of Titanium Based Coatings by Laser Cladding Technique

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