Effect of machining on performance enhancement of superficial layer of high-strength alloy steel

Jiang, Hongwan; Ren, Ziyan; Yi, Yanliang; He, Lin; Yuan, Sen

doi:10.1016/j.jmrt.2021.07.028

Cited by 15 publications

(6 citation statements)

References 58 publications

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“…On this basis, the elastic moduli are determined for the considered hardness values, Table 2. The increase of the elastic modulus with increasing hardness has also been reported in the literature, for example, for high‐strength alloy steel regarding the effect of machining near the superficial layer [38, 39]. In a further study on unalloyed cast iron, nanoindentation testing was performed before and after pre‐straining, illustrating a similar correlation between hardness and indentation modulus [40].…”

Section: Resultssupporting

confidence: 70%

Modelling and simulation of the hardness profile and its effect on the stress‐strain behaviour of punched electrical steel sheets

Gottwalt-Baruth

Tetzlaff

Altenbach

et al. 2023

Materialwissenschaft Werkst

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The shear cutting of electrical steel sheets has a significant influence on the magnetic and mechanical material properties. Due to plastic deformation and strain hardening in the area of the punched edge, the electrical steel sheets exhibit a characteristic hardness profile. This study deals with the modelling of the resulting hardness profile by means of finite‐element simulations. Elastic‐plastic material properties are obtained from spherical nanoindentation testing as a function of the local hardness. In particular, representative stress‐strain values are determined by applying Tabor's concept of indentation stress‐strain curves. The choice of the appropriate stress‐ and strain‐constraint factors is discussed with respect to the nanoindentation test setup used. Following this, the representative stress‐strain values are analytically described to determine true stress‐strain curves for the local assignment of different material models depending on the hardness. The implementation of the modelling approach in a finite‐element simulation is presented for a punched electrical steel sheet specimen under monotonic loading. The simulation results are basically in good agreement with experimental data and confirm the expected influence on the mechanical material behaviour due to the shear cutting process.

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Section: Resultssupporting

confidence: 70%

Modelling and simulation of the hardness profile and its effect on the stress‐strain behaviour of punched electrical steel sheets

Gottwalt-Baruth

Tetzlaff

Altenbach

et al. 2023

Materialwissenschaft Werkst

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“…Currently, the modern machine-building industry faces a large number of challenges: the development of new materials or materials with improved properties; the introduction of new technologies; energy and resources saving through the production of economical and efficient materials for machines and manufacturing equipment; improvement of reliability and the service life of products, etc. In most cases, during the operation of machine parts and mechanisms, it is the surface layers of material that are subjected to the load, and that is why they attract the maximum attention of scientists [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

et al. 2022

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The paper describes the two-stage modification of the surface layer of hypereutectic Al-20%Si alloy that combines electroexplosive alloying by an Al-Y2O system with subsequent irradiation by pulsed electron beam. It is shown that irrespective of the modification mode, a multilayer structure is formed consisting of the following layers: a surface layer and an intermediate layer. The surface layer is a multiphase material, the thickness of which varies within 1 µm. The intermediate layer, the thickness of which varies within 40 µm, is made up of rapid solidification cells formed due to the rapid cooling of molten layer of Al-20%Si alloy. The cells are divided by thin interlayers mostly formed by silicon nanoparticles.

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“…Mechanical effects and plastic deformations of the machining processes change the surface finish and microstructure [8]. Thermal effects are created by the process, causing a change in the dislocation density and distribution and surface integrity [9]. Besides, pressure and the cooling temperature are essential effects that contribute to the formation of residual stresses [10].…”

Section: Introductionmentioning

confidence: 99%

“…Fig 9. Residual stress in cutting velocity direction (y-axis) and cutting velocity 150m∕min with cutting edge radius 1μm at time step 3 × 10 −4 s in different depths into the workpiece for a 0.06mm depth of cut, b 0.12mm cutting depth, c 0.2mm depth of cut…”

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confidence: 99%

Numerical predictions of orthogonal cutting–induced residual stress of super alloy Inconel 718 considering dynamic recrystallization

Soufian

Darabi

Abouridouane

et al. 2022

Int J Adv Manuf Technol

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Manufacturing processes, such as machining, can produce residual stresses in products. Residual stress and its distribution can be the main factor influencing the fatigue life of machined components and has already been the subject of many experimental and numerical studies. The high-temperature condition, as a result of machining, makes a change in the microstructural properties of the material and consequently affect the mechanical properties of the workpiece. A major metal component of aircraft structure and engine components is nickel-based alloys due to their resistance to heat, corrosion, thermal fatigue, thermal shock, creep, and erosion. When these critical structural components in the aerospace industry are manufactured with the objective to reach high-reliability levels, surface integrity is one of the most relevant parameters used for evaluating the quality of finish-machined surfaces. The residual stresses and surface alterations including white layer, depth of work hardening, micro-cracks, and oxidation induced by machining of nickel-based alloys are extremely critical due to safety and sustainability concerns. Integrated Computational Materials Engineering (ICME) links physics-based models to predict the performance of materials based on their processing history. The Johnson–Mehl–Avrami-Kolmogrov (JMAK) model is used to develop a microstructure-based modeling approach that takes into account dynamic recrystallization (DRX) that causes grain size changes. Allied with that, a grain size parameter on the flow stress behavior of the material is considered by adding a grain size-dependent term to the traditional Johnson–Cook (JC) model as a novel framework. The impact of the simulation of the orthogonal cutting process is implemented in a finite element method (FEM) model–based commercial software, ABAQUS-explicit, with a coupled Euler-Lagrangian (CEL) approach. By relying on the VUHARD user subroutine capabilities with Fortran language, ABAQUS-explicit can be steered to model the material behavior considering the term of DRX. The forecast capability of the developed model is assessed by comparison of the results by changing the depth of cut and cutting edge radius effect on the residual stress. Then, the correlation between the grain size evolution and temperature distribution by changing the cutting velocity is investigated.

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Effect of machining on performance enhancement of superficial layer of high-strength alloy steel

Cited by 15 publications

References 58 publications

Modelling and simulation of the hardness profile and its effect on the stress‐strain behaviour of punched electrical steel sheets

Modelling and simulation of the hardness profile and its effect on the stress‐strain behaviour of punched electrical steel sheets

Structure–Phase Transformations in the Modified Surface of Al-20%Si Alloy Subjected to Two-Stage Treatment

Numerical predictions of orthogonal cutting–induced residual stress of super alloy Inconel 718 considering dynamic recrystallization

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