Effect of milling surface topography and texture direction on fatigue behavior of ZK61M magnesium alloy

Chen, Shiqi; Zhao, Wenxiang; Pei, Yan; Qiu, Tianyang; Gu, Hairong; Li, Jiao; Wang, Xibin

doi:10.1016/j.ijfatigue.2021.106669

Cited by 17 publications

(10 citation statements)

References 22 publications

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“…From the figure, it can be seen that when Str is greater than 0.6, the maximum Von Mises stress values on the subsurface of each surface begin to rapidly decrease. This indicates the unification of the surface texture direction of the sample is beneficial to the flow of lubricating oil and the stable contact of friction surfaces, and this effect is significantly related to the loading direction; thus, the uniform texture arrangement will improve the friction condition and reduce the subsurface layer stress (Chen et al , 2022).…”

Section: Simulation Results and Analysismentioning

confidence: 99%

Study on the subsurface characteristics of textured surfaces under EHL condition

Li,

Du,

et al. 2024

ILT

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Purpose The purpose of this study is to investigate the influence of surface texture on the subsurface characteristics of contact interfaces under elastohydrodynamic lubrication condition. As a typical contact form of gears and bearings, the optimization of friction characteristics at the elastohydrodynamic lubrication (EHL) interface has attracted the attention of scholars. Laser surface texturing is a feasible optimization solution, but there have been concerns about whether the surface texture of high-pair parts will affect their fatigue life. Design/methodology/approach To examine the impact of texture preparation on the subsurface characteristics of high-pair interfaces under EHL conditions, a point contact EHL model is developed that takes into account the effect of textured surface topography. The pressure and thickness of the oil film are calculated as input parameters under different loads and entrainment velocities. The finite element method is used to simulate the impact of textures with varying diameters, densities and depths on the subsurface characteristics of the elastohydrodynamic interface. According to ISO 25178, analyze the relationship between 3D topography parameters and subsurface characteristics and study the trend of friction characteristics and subsurface characteristics based on the results of the ball on disc friction tests. Findings The outcomes suggest that under different rotational velocity and load conditions, the textured surfaces exhibit improved friction reduction effects; however, the creation of textures can result in significant subsurface plastic deformation and local peeling. The existence of texture makes the larger stress zone in the subsurface layer closer to the surface, leading to fatigue failure near the surface. Reasonable design parameters can help enhance the attributes of the subsurface. A smaller Sa and a Str greater than 0.5 can achieve ideal subsurface properties on the textured surface. Originality/value This paper investigates the influence of surface texture on the friction and subsurface characteristics of EHL interfaces and analyzes the impact of surface texture on interface contact performance while achieving lubrication improvement functional characteristics. The results provide theoretical support for the optimization design and functional regulation of surface texture in EHL interfaces. Peer review The peer review history for this article is https://publons.com/publon/10.1108/ILT-10-2023-0324/

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Section: Simulation Results and Analysismentioning

confidence: 99%

Study on the subsurface characteristics of textured surfaces under EHL condition

Li,

Du,

et al. 2024

ILT

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“…Maz anov a et al 10 revealed that microstructure also has a significant impact on the multiaxial fatigue behavior of materials. Our previous works [11][12][13] correlated surface roughness parameters such as skewness, kurtosis, and texture direction with fatigue life. These studies indicate that surface integrity, including residual stress, microstructure, and surface roughness, has a significant influence on the surface fatigue performance of materials.…”

Section: Introductionmentioning

confidence: 99%

A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

Liang,

Jiao,

Yan

et al. 2024

Fatigue Fract Eng Mat Struct

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Surface integrity influences the material fatigue performance significantly, but most micromechanical models based on crystal plasticity only consider the microstructure of the matrix. In this paper, a crystal plastic finite element modeling method was proposed, which simultaneously considered surface roughness, residual stress, and gradual microstructure. It was verified through multiaxial fatigue experiments of materials processed by different multistage machining processes. The results show that larger axial residual compressive stress and smaller grain size can lead to higher multiaxial fatigue life. The existence of residual compressive stress causes the location of material crack initiation to decrease from the surface layer to the subsurface layer. The proposed model can predict the multiaxial fatigue life of materials within a 50% error band.

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“…This technique involves the creation of microstructures on metal surfaces through surface treatment technology (Wang et al , 2023; Ammosova et al , 2020). This technology can improve the friction and lubrication performance of metal surfaces (Zhang et al , 2022; Zhang et al , 2023; Annadi and Syed, 2023; Liu et al , 2022), reduce material wear and noise generation (Mo et al , 2013; Wang et al , 2013; Xue et al , 2020) and improve the corrosion resistance (Sadeghi et al , 2022) and fatigue life (Chen et al , 2021) of parts. In recent years, surface treatment technologies at the micrometer and nanometer scale, especially the fabrication of microstructures, have become a research focus.…”

Section: Introductionmentioning

confidence: 99%

Optimization design of irregular grooved texture on the surface of sliding pair based on adaptive genetic algorithm

Shen,

Li,

et al. 2023

ILT

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Purpose This study aims to investigate the effects of irregular groove textures on the friction and wear performance of sliding contact surfaces. These textures possess multiple depths and asymmetrical features. To optimize the irregular groove texture structure of the sliding contact surface, an adaptive genetic algorithm was used for research and optimization purposes. Design/methodology/approach Using adaptive genetic algorithm as an optimization tool, numerical simulations were conducted on surface textures by establishing a dimensionless form of the Reynolds equation and setting appropriate boundary conditions. An adaptive genetic algorithm program in MATLAB was established. Genetic iterative methods were used to calculate the optimal texture structure. Genetic individuals were selected through fitness comparison. The depth of the groove texture is gradually adjusted through genetic crossover, mutation, and mutation operations. The optimal groove structure was ultimately obtained by comparing the bearing capacity and pressure of different generations of micro-convex bodies. Findings After about 100 generations of iteration, the distribution of grooved textures became relatively stable, and after about 320 generations, the depth and distribution of groove textures reached their optimal structure. At this stage, irregular texture structures can support more loads by forming oil films. Compared with regular textures, the friction coefficient of irregular textures decreased by nearly 47.01%, while the carrying capacity of lubricating oil films increased by 54.57%. The research results show that irregular texture structures have better lubrication characteristics and can effectively improve the friction performance of component surfaces. Originality/value Surface textures can enhance the friction and lubrication performance of metal surfaces, improving the mechanical performance and lifespan of components. However, surface texture processing is challenging, as it often requires multiple experimental comparisons to determine the optimal texture structure, resulting in high trial-and-error costs. By using an adaptive genetic algorithm as an optimization tool, the optimal surface groove structure can be obtained through simulation and modeling, effectively saving costs in the process.

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Effect of milling surface topography and texture direction on fatigue behavior of ZK61M magnesium alloy

Cited by 17 publications

References 22 publications

Study on the subsurface characteristics of textured surfaces under EHL condition

Study on the subsurface characteristics of textured surfaces under EHL condition

A crystal plastic finite element model for the effect of surface integrity on multiaxial fatigue life after multistage machining processes

Optimization design of irregular grooved texture on the surface of sliding pair based on adaptive genetic algorithm

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