Impact of Indentor Sliding Velocity and Loading Repetition Factor on Shear Strain and Structure Dispersion in Nanostructuring Burnishing

Kuznetsov, V. P.; Skorobogatov, A. S.; Gorgots, V.G.

doi:10.22190/fume190330023k

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…The refinement of the structure of the quenched AISI 420 steel by nanostructuring burnishing with a spherical indenter made of polycrystalline synthetic diamond was studied in [6]. It is shown that at a burnishing force of 340 N, a feed of 0.04 mm/rev, and with a change in sliding speed from 6 up to 26 m/min, the plastic shear deformation ranges from 2.1 to 3.4.…”

Section: Korzynski Et Al's Workmentioning

confidence: 99%

Finite Element Simulation and Experimental Investigation of Nanostructuring Burnishing AISI 52100 Steel Using an Inclined Flat Cylindrical Tool

et al. 2023

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This article is devoted to the development of a sliding burnishing scheme using a flat cylindrical indenter. The previously established patterns of nanostructured state formation in the AISI 52100 steel subsurface layer showed a need to create a special tool with a variable tilt angle of the indenter and with force regulation. A new tool with a cubic boron nitride indenter opens wide possibilities for nanostructuring burnishing of hardened bearing steel. Firstly, a flat cylindrical indenter has high durability due to repeated rotation around its axis. Secondly, the change of the tilt angle to the treated surface allows controlling the contact compression pressure and plastic shear deformation, which determines the formation of a nanostructured state of the material by the method of severe plastic deformation (SPD). The purpose of the work is to determine the optimal parameters of the process and tool in order to form a nanostructure and significantly increase surface layer microhardness. The goal was achieved by the methods of finite element modeling (FEM) and experimental studies of burnishing when the indenter tilt angle changes from 0.5° to 2.5° under dry processing conditions. Numerical simulation of the process made it possible to establish optimal values of the indenter tilt angle of 2° and the burnishing force 250 N according to the criteria of maximum contact pressure and cumulative deformation. The experimental studies of cumulative deformations and the coefficient of friction by the method of burnishing a split disc and dynamometry of the process confirmed the FEM results. The transmission microscopy, durometry, and 3D surface profilometry showed the sensitivity of nanocrystallite sizes, microhardness, and roughness to an indenter tilt angle and confirmed the optimality of the established tilt angle value.

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Section: Korzynski Et Al's Workmentioning

confidence: 99%

Finite Element Simulation and Experimental Investigation of Nanostructuring Burnishing AISI 52100 Steel Using an Inclined Flat Cylindrical Tool

et al. 2023

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“…The primary problem is to create and improve the methods for finishing surface layer treatment of precision workpieces of tribo-couplings, providing hardening and high topographic properties of the surface layer. An effective method of finishing structural steels is the technology of nanostructuring burnishing, which makes it possible to form the nanostructured state and sub-microrelief of the surface layer during the precision workpiece serial manufacture at metalworking centers [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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2023

J. Mater. Eng.

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The paper presents the results of experimental studies of the AISI 304 steel disc surface after finishing turning, electropolishing and nanostructuring burnishing after one and five passes of the tool with a natural diamond tip with a radius of 2 mm. It is shown that surface layer nanocrystallization provides for almost complete decomposition of austenite in a layer up to 100 µm thick, an increase in microhardness up to 400...450 HV0.025 and a 3.3-fold reduction in the wear intensity on hardened AISI 1045 steel under conditions of lubrication with industrial oil compared with electropolishing. The content of residual austenite in the surface layer is not more than 5% when the temperature rises to 400°C.

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Numerical stress and strain analysis of the steel surface layer burnished with a tilted cylindrical tool

Smolin

Kazakbaeva

Kuznetsov

2022

Proceedings of the International Conference “Physical Mesomechanics. Materials With Multilevel Hierarchical Structure and Intel

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Impact of Indentor Sliding Velocity and Loading Repetition Factor on Shear Strain and Structure Dispersion in Nanostructuring Burnishing

Cited by 4 publications

References 20 publications

Finite Element Simulation and Experimental Investigation of Nanostructuring Burnishing AISI 52100 Steel Using an Inclined Flat Cylindrical Tool

Finite Element Simulation and Experimental Investigation of Nanostructuring Burnishing AISI 52100 Steel Using an Inclined Flat Cylindrical Tool

Untitled

Numerical stress and strain analysis of the steel surface layer burnished with a tilted cylindrical tool

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