Tribology Letters最新文献

Enhanced Wear Resistance of Fine-Grained Ni-Based Coating via Annealing-Induced Phase Transformation 退火诱导相变提高ni基细晶涂层耐磨性

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-11-06 DOI: 10.1007/s11249-026-02219-9

Muhammad Arslan Hafeez, Jia-Xuan He, Cheng Zhang, Lin Liu

{"title":"Enhanced Wear Resistance of Fine-Grained Ni-Based Coating via Annealing-Induced Phase Transformation","authors":"Muhammad Arslan Hafeez, Jia-Xuan He, Cheng Zhang, Lin Liu","doi":"10.1007/s11249-026-02219-9","DOIUrl":"10.1007/s11249-026-02219-9","url":null,"abstract":"<div><p>Annealing is widely applied to reduce porosity and enhance the wear resistance of thermally sprayed metallic coatings; however, its effectiveness is often limited by grain coarsening and brittle phase formation. Here, we present a new approach that directly overcomes these limitations by coupling thermal spraying with the crystallization behavior of a rationally designed amorphous alloy powder (Ni<sub>68.6</sub>Cr<sub>8.7</sub>Nb<sub>3</sub>P<sub>16</sub>B<sub>3.2</sub>Si<sub>0.5</sub>). Upon annealing at 800 °C for 1 h, the metastable Mg<sub>6</sub>Cu<sub>16</sub>Si<sub>7</sub>-type phase present in the as-sprayed coating transforms into a well-refined three-phase microstructure, comprising a ductile Ni-based solid solution and hard Ni<sub>3</sub>P and NbNi<sub>3</sub> intermetallic phases, with 51% reduced intersplat density. This microstructural configuration results in a 21% reduction in COF and an 89% reduction in wear rate. The worn surface of annealed coating demonstrates minor thin grooves, lower fractions of oxides, and no sign of spallation, delamination or cracking, presenting a significant improvement in the wear resistance after annealing. This improvement originates from the three-phase composite microstructure in which the ductile Ni-based solid solution provides plastic deformability and crack resistance, whereas the hard Ni<sub>3</sub>P and NbNi<sub>3</sub> phases provide hardness and load-bearing capacity. Annealed coating exhibits mild abrasive wear mechanism coupled with limited plastic deformation. These findings demonstrate that controlled crystallization of thermally sprayed coatings can be used to engineer beneficial phases, providing a promising strategy for the design of high-performance wear-resistant coatings.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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On the Elastohydrodynamic Lubrication Performance of CrN Coating: An Experimental and Molecular Dynamics Simulation Study CrN涂层弹流润滑性能的实验与分子动力学模拟研究

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-11-02 DOI: 10.1007/s11249-026-02226-w

Jianguo Zhang, Junhao Xu, Guochen Huang, Jing Wang, Kangmei Li, Guoqing Wang

引用次数: 0

Ken Johnson 100th birthday, Introduction 肯·约翰逊100岁生日，介绍

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-31 DOI: 10.1007/s11249-026-02176-3

John Williams, Lucas Frérot

引用次数: 0

Mechanical Mixing in the Third Body: Numerical Investigation of a Diffusion-Driven Process 第三体中的机械混合：扩散驱动过程的数值研究

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-29 DOI: 10.1007/s11249-026-02211-3

Kévin Daigne, Guilhem Mollon, Sylvie Descartes, Nicolas Fillot, Romain Jeanneret-Dit-Grosjean, Frédéric Biesse, Antoine Perriot, Gaëtan Maurel

{"title":"Mechanical Mixing in the Third Body: Numerical Investigation of a Diffusion-Driven Process","authors":"Kévin Daigne, Guilhem Mollon, Sylvie Descartes, Nicolas Fillot, Romain Jeanneret-Dit-Grosjean, Frédéric Biesse, Antoine Perriot, Gaëtan Maurel","doi":"10.1007/s11249-026-02211-3","DOIUrl":"10.1007/s11249-026-02211-3","url":null,"abstract":"<p>When a tire slides on a road surface, cross-sections show that mineral particles from the road progressively migrate deeper into the tire tread. To investigate this solid–solid transport phenomenon, we employ a multibody meshfree method. Tire–road contact is reproduced numerically, enabling in situ observation of the initial incorporation of mineral particles and their long-term transport. We identify three distinct incorporation modes: plowing, abrasion, and fracture. Once incorporated, mineral particles migrate toward greater depths through a diffusion-like mechanism. We support this interpretation through a detailed kinematic analysis using the Green–Kubo framework. We study four main parameters: contact pressure, rubber flow resistance, rubber Young modulus, and sliding velocity. The results show that flow resistance and sliding velocity dominate the kinematics. Increasing flow resistance increases the shear rate by localizing energy dissipation within a thinner layer, whereas increasing sliding velocity increases it sublinearly (deviating from the classical linear scaling). The diffusion coefficient decreases with contact pressure, increases with flow resistance and sliding velocity, and is insensitive to the Young modulus if the contact pressure is kept constant. These trends are quantitatively supported, and we interpret their underlying physical mechanisms through the analysis of velocity fluctuations and their temporal persistence.</p>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inverse Design of Metainterfaces Towards Static Friction Control: Beyond the Hertzian Limit 面向静摩擦控制的元接口逆设计：超越赫兹极限。

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-26 DOI: 10.1007/s11249-026-02210-4

Jacopo Bilotto, Arnav Singhal, Joaquin Garcia-Suarez, Gaëtan Cortes, Lucas Fourel, Jean-François Molinari

{"title":"Inverse Design of Metainterfaces Towards Static Friction Control: Beyond the Hertzian Limit","authors":"Jacopo Bilotto, Arnav Singhal, Joaquin Garcia-Suarez, Gaëtan Cortes, Lucas Fourel, Jean-François Molinari","doi":"10.1007/s11249-026-02210-4","DOIUrl":"10.1007/s11249-026-02210-4","url":null,"abstract":"<div><p>Programming the static friction of mechanical interfaces is critical for soft robotics, haptics, and precision gripping. Static friction is governed by the real contact area, and standard rough surfaces exhibit a linear area-load scaling inherent to classical models, severely restricting their functional range. Here, we propose a framework for the inverse design of tribological metainterfaces engineered for programmable contact behaviors. By utilizing general axisymmetric asperities, we unlock nonlinear macroscopic responses unattainable by standard Hertzian contacts. To solve the inverse problem, we embed a fully differentiable contact mechanics engine within a neural network and a quadratic optimizer. We leverage regularized physical gradients to automatically discover non-standard topographies that reproduce complex target contact laws, with only a few asperities in unit cells. The predicted designs are validated against high-fidelity boundary element method (BEM) simulations. By front-loading computational costs during training, the neural surrogate yields near-instantaneous design inference, bypassing the bottlenecks of traditional multi-start optimization. This framework bridges data-driven optimization and rigorous physics, offering a scale-invariant pathway for the high-throughput discovery and real-time control of functional tribological surfaces.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13710687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149284630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distinguishing Friction From Shear Force: Revealing the Link Between Friction Weakening and Dynamic Instability 区分摩擦力与剪力：揭示摩擦减弱与动力失稳之间的联系

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-25 DOI: 10.1007/s11249-026-02206-0

Jia Liu, Shan Xu, Ding Wang, Shengwang Hao

{"title":"Distinguishing Friction From Shear Force: Revealing the Link Between Friction Weakening and Dynamic Instability","authors":"Jia Liu, Shan Xu, Ding Wang, Shengwang Hao","doi":"10.1007/s11249-026-02206-0","DOIUrl":"10.1007/s11249-026-02206-0","url":null,"abstract":"<div><p>Dynamic friction weakening drives both earthquakes and the slip behavior of tribological systems across scales, yet the dependence of unstable slip events on frictional evolution remains to be clarified. Here, we show the critical role of the peak friction weakening rate in determining the magnitude of unstable slip events. Direct experimental measurements distinguishing frictional from shear forces reveal that peak slip velocity scales linearly with peak friction weakening rate in unstable slip. Friction weakening rate plays an excitation for the dynamic slip. The lag of peak slip velocity behind the peak friction weakening rate is associated with the self-limitation of slip velocity and the self-arrest of slip. We identify three characteristic modes of friction weakening during unstable slip. The average friction weakening rate during the rising period of slip acceleration is significantly correlated with the rate of increase of slip acceleration. Our findings suggest that the peak friction weakening rate serves as the fundamental scaling parameter for unstable slip events, thereby suggesting it as the underlying mechanism through which external factors modulate event magnitude.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure Evolution and High-Temperature Wear Mechanisms of Laser Direct Energy-Deposited Inconel 718 激光直接能量沉积Inconel 718的组织演变及高温磨损机理

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-24 DOI: 10.1007/s11249-026-02222-0

Manik A. Patil, Dhananjay M. Kulkarni, Digvijay G. Bhosale

{"title":"Microstructure Evolution and High-Temperature Wear Mechanisms of Laser Direct Energy-Deposited Inconel 718","authors":"Manik A. Patil, Dhananjay M. Kulkarni, Digvijay G. Bhosale","doi":"10.1007/s11249-026-02222-0","DOIUrl":"10.1007/s11249-026-02222-0","url":null,"abstract":"<div><p>Nickel-based superalloy Inconel 718 is widely used in high-temperature applications in the aerospace and power generation industries, but its tribological performance at elevated temperatures is of major concern, especially for additively manufactured components. Although a temperature range of about 750 °C is important for practical applications, systematic investigations in this range are rare, even though it is the subject of many studies conducted at room temperature (R.T.) and at selected high temperatures. In this work, the wear characteristics of additively manufactured Inconel 718 were studied, focusing on microstructural changes and associated wear mechanisms, using scanning electron microscopy (SEM). Dry sliding wear tests were performed under severe high-temperature conditions, and the worn surfaces were characterized to understand the predominant wear mechanisms and the degradation pathways of the microstructures. The SEM observations indicated that there are significant relationships between the microstructural features, such as the grain morphology, the distribution of porosity, the sites of crack initiation, and the occurrence of oxide formation, with the wear behaviour. As the temperatures approached 750 °C, the predominant wear mechanism shifted from abrasive and adhesive wear to a combination of oxidative wear, plastic deformation, and surface delamination. Under these conditions, the formation and instability of oxide layers and the propagation of cracks in the subsurface were important in the removal of material. The coefficient of friction drops significantly from 0.75 (Ambient Temperature) to 0.34 (750 °C). This document offers important insights into the wear mechanisms and is beneficial for predicting the performance of components in intermediate- to high-temperature service applications involving Inconel 718.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hyper-Reduction of Full-System Finite Element Modelling of Thermal Elastohydrodynamic Lubricated Line Contacts 热弹流润滑线接触全系统有限元模型的超简化

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-22 DOI: 10.1007/s11249-026-02217-x

Alain El Hajj, Wassim Habchi, Chady Ghnatios, Sebastian Rodriguez, Philippe Lorong, Francisco Chinesta

{"title":"Hyper-Reduction of Full-System Finite Element Modelling of Thermal Elastohydrodynamic Lubricated Line Contacts","authors":"Alain El Hajj, Wassim Habchi, Chady Ghnatios, Sebastian Rodriguez, Philippe Lorong, Francisco Chinesta","doi":"10.1007/s11249-026-02217-x","DOIUrl":"10.1007/s11249-026-02217-x","url":null,"abstract":"<div><p>Thermal elastohydrodynamic lubrication (TEHL) simulations of line contacts lead to strongly coupled, high-dimensional nonlinear systems. Accurate prediction of pressure, film thickness, temperature rise, shear stress, and friction generally requires full-system finite element (FE) models, whose computational cost limits repeated parametric studies. Previous reduction efforts for this class of TEHL models have mainly targeted the linear elastic contribution, for example through Static Condensation with Splitting (SCS). However, after elastic reduction, the nonlinear thermal subsystem remains the dominant bottleneck, as it contains the largest number of degrees of freedom (DOFs) and still requires repeated Jacobian assembly and projection during the Newton iterations. This work extends the reduction of full-system FE TEHL line contact simulations to the nonlinear thermal contribution. The proposed formulation retains SCS for the elastic reduction, uses Proper Orthogonal Decomposition (POD) for the thermal unknowns, and applies the Matrix Discrete Empirical Interpolation Method (MDEIM) to hyper-reduce the nonlinear thermal Jacobian block. The method is validated on out-of-training cases spanning low, moderate, and high loads. The coupled algebraic system is reduced from 23,880 to 1,533 DOFs, and only 1000 selected nonzero thermal-Jacobian entries are evaluated out of 161,249 during the online stage. The reduced-order model (ROM) achieves an average speedup of 38% while maintaining minimal errors in pressure, mid-film temperature, shear stress, friction, and film-thickness quantities. The proposed SCS-POD-MDEIM formulation therefore provides an accurate and computationally efficient strategy for repeated full-system FE TEHL line contact simulations.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11249-026-02217-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Strategy for Obtaining Topographically Comparable Tracks Reveals Shifts in Stribeck Curve 一种获取地形可比轨迹的策略揭示了斯特里贝克曲线的变化

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-22 DOI: 10.1007/s11249-026-02221-1

Yulong Li, Johannes Schneider, Christian Greiner

{"title":"A Strategy for Obtaining Topographically Comparable Tracks Reveals Shifts in Stribeck Curve","authors":"Yulong Li, Johannes Schneider, Christian Greiner","doi":"10.1007/s11249-026-02221-1","DOIUrl":"10.1007/s11249-026-02221-1","url":null,"abstract":"<div><p>Surface topography plays a critical role in the tribological behavior of interacting surfaces. In experimental studies, a controlled variable strategy commonly relies on a limited number of parameters to characterize the state of a surface. However, this approach is intrinsically limited because it reduces multiscale surface morphology to a few descriptors and assumes that the remaining topographic features can be kept comparable. In practice, preparing surfaces that are similar across all length scales is highly challenging. In this study, we established a customized radial grinding strategy to produce circumferential tracks with closely comparable surface topographies at different radial positions on the same 100Cr6 steel disk. The topographic comparability of these tracks was verified across multiple length scales with both roughness parameters and power spectral density (PSD). Lubricated ball-on-disk tests were then performed using 10 mm 100Cr6 steel balls, FVA 1 base oil, a normal load of 2 N, and a multistep sliding speed protocol ranging from 50 mm/s to 600 mm/s. Angle-resolved friction analysis showed that the main spatial distribution of friction was largely preserved among the different radii, although the mean friction level between radii varied systematically with sliding speed. Despite the verified topographic comparability and the similar spatial friction distribution, the resulting Stribeck type curves did not collapse under identical linear sliding speeds. This deviation may arise from differences in angular velocity and/or from multiscale effects of surface topography that are not fully captured by conventional statistical parameters.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11249-026-02221-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-Asperity Sliding Behavior on Graphene Surface Modulated by Metal Substrate Doping: A DFT Study 金属衬底掺杂调制石墨烯表面单粗糙体滑动行为：DFT研究

IF 3.5 3区工程技术

Tribology Letters Pub Date : 2026-10-20 DOI: 10.1007/s11249-026-02223-z

Yingyi Liu, Ziwen Cheng, Shumin Tan, Yuchi Kang, Junfeng Sun, Meihong Liu, Wei Long, Zhibin Lu

{"title":"Single-Asperity Sliding Behavior on Graphene Surface Modulated by Metal Substrate Doping: A DFT Study","authors":"Yingyi Liu, Ziwen Cheng, Shumin Tan, Yuchi Kang, Junfeng Sun, Meihong Liu, Wei Long, Zhibin Lu","doi":"10.1007/s11249-026-02223-z","DOIUrl":"10.1007/s11249-026-02223-z","url":null,"abstract":"<div><p>In atomic force microscopy (AFM) friction testing, flexible two-dimensional (2D) solid lubricants typically rely on a substrate for support to suppress the out-of-plane bending and maintain their atomic-level flatness. However, the impacts of interface charge transfer caused by contact with the substrate on their surface friction behavior is commonly underestimated. Here, we employed density functional theory to simulate the single-asperity sliding of a diatomic Au tip on a graphene (Gr) surface supported by various metal substrates, and to track changes in the charge distribution at contact interface. It is found that the contact between metal substrate and Gr surface causes charge transfer between them, resulting in contact charge doping. This, in turn, alters the charge density fluctuation at the tip-Gr contact region during sliding, thereby modulating the energy barrier (i.e., friction energy dissipation) that the tip must overcome to slide across Gr surface. This effort elucidates the electronic mechanism by which the contact doping induced by metal substrate influences the single-asperity sliding of Au tip on Gr surface, providing an electron-scale insight into the influence of substrate support on the surface friction properties of 2D solid lubricants in AFM friction experiments.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"74 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0