IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.wear.2025.206472

Dongfang Zeng , Yongjie Su , Yan Xu , Zhisheng Liu , Tian Xu , Chaotao Liu , Liantao Lu

{"title":"Fretting wear and fatigue behavior evaluation of aluminum alloy–steel connections fasten by type II ring groove rivet under tension loading","authors":"Dongfang Zeng , Yongjie Su , Yan Xu , Zhisheng Liu , Tian Xu , Chaotao Liu , Liantao Lu","doi":"10.1016/j.wear.2025.206472","DOIUrl":"10.1016/j.wear.2025.206472","url":null,"abstract":"<div><div>This study investigates the fretting wear and fatigue behavior of aluminum alloy–steel connections fastened using type II ring groove rivets under tension loading. It includes fatigue testing, fretting wear and fatigue analysis, and subsequent fatigue strength prediction. Experimental results reveal that fatigue cracks initiate at the edge of the prefabricated hole in the aluminum alloy plate, accompanied by severe fretting wear at the interface between the rivet and the aluminum alloy plate. A finite element model was developed to analyze the contact status and stress distribution within the riveted structure. The actual clamping force was determined by comparing the contact status of the clamped plates observed experimentally and in simulations. Results indicate that the clamping force significantly decreases from its initial value during the test, leading to a reduction in the fatigue strength of the riveted structure. Additionally, the fatigue crack initiation location shifts from the length to the width direction of the aluminum plate, and from a location distant from the prefabricated hole to the hole edge. As tensile stresses govern the crack initiation, the SWT criterion, when accounting for clamping force loss, accurately identifies fatigue crack initiation sites in riveted connection, with a fatigue strength prediction error of 15 %.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206472"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Comparative study on microstructural evolution and damage behavior of 316L steel under tangential and impact-sliding fretting in liquid lead-bismuth eutectic 液态铅铋共晶中切向与冲击滑动微动作用下316L钢组织演变与损伤行为的对比研究

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI: 10.1016/j.wear.2025.206437

Qi Sun , Qian Yang , Haowen Tang , Yuanyu Zhu , Pengfei Yang , Minhao Zhu

引用次数: 0

Tribo-mechanisms of Cr2AlC nanocoating in lead-bismuth eutectic under multi-stage fretting cycles: Oxide-driven self-adaptive fretting wear protection 多级微动循环下铅铋共晶Cr2AlC纳米涂层的摩擦机制：氧化物驱动的自适应微动磨损保护

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-08 DOI: 10.1016/j.wear.2025.206460

Guangzhao Wang , Hui Chen , Xiaoyu Sun , Wenqi Song , Zhenyu Wang , Guorui Zhu

{"title":"Tribo-mechanisms of Cr2AlC nanocoating in lead-bismuth eutectic under multi-stage fretting cycles: Oxide-driven self-adaptive fretting wear protection","authors":"Guangzhao Wang , Hui Chen , Xiaoyu Sun , Wenqi Song , Zhenyu Wang , Guorui Zhu","doi":"10.1016/j.wear.2025.206460","DOIUrl":"10.1016/j.wear.2025.206460","url":null,"abstract":"<div><div>In Generation IV lead-cooled fast reactors, austenitic 316L stainless steel steam generator tubes are susceptible to both dissolution corrosion and fretting fatigue wear in liquid lead–bismuth eutectic (LBE) environment. To address this challenge, a Cr<sub>2</sub>AlC nanocoating was deposited on 316L tubes and evaluated through multi-stage fretting wear tests in LBE at 450 °C, using a self-developed high temperature tribo-tester with a tube–plate contact configuration. The results demonstrate that the coating maintains a stable friction coefficient (0.6 ± 0.05) throughout 5 × 10<sup>3</sup> to 2 × 10<sup>6</sup> cycles, representing an approximately 40 % reduction compared to bare 316L stainless steel. The maximum wear depth stabilizes at 14.2 ± 0.1 μm, approximately 70 % lower than that of uncoated 316L. Multiscale characterization by SEM/EDS, XRD, and nanoindentation revealed a three-stage friction response on the coating: an initial stage where the coating surface remains intact, and wear occurs mainly on the plate; a transitional stage characterized by the formation of a discontinuous third-body layer (TBL) comprising oxides and wear debris, exhibiting relatively low mechanical properties; and a stable stage dominated by a compact TBL primarily consisting of Cr<sup>3+</sup>-doped α-Al<sub>2</sub>O<sub>3</sub>, the wear surface H<sup>2</sup>/E<sup>3</sup> ratio increases, which enhances resistance to both wear and Pb-Bi corrosion. The proposed Cr<sub>2</sub>AlC self-adaptive protection mechanism offers a scientific basis for designing wear-resistant coatings for steam generator tubing in Generation IV nuclear reactors.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206460"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Molecular dynamics analysis of friction wear in gray cast iron brake discs: an atom-scale investigation of graphite/matrix interface behavior 灰口铸铁制动盘摩擦磨损的分子动力学分析：石墨/基体界面行为的原子尺度研究

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-15 DOI: 10.1016/j.wear.2025.206477

Yanjie Liu , Kaikui Zheng , Zhiying Ren

{"title":"Molecular dynamics analysis of friction wear in gray cast iron brake discs: an atom-scale investigation of graphite/matrix interface behavior","authors":"Yanjie Liu , Kaikui Zheng , Zhiying Ren","doi":"10.1016/j.wear.2025.206477","DOIUrl":"10.1016/j.wear.2025.206477","url":null,"abstract":"<div><div>The friction and wear behavior of gray cast iron brake discs is closely related to its microstructure and the interaction at the graphite/iron matrix interface. However, due to limitations in testing conditions, the microscopic mechanism of this interface during the braking process remains unclear. This study employed molecular dynamics simulations to investigate the nanoscale tribological behavior of a graphite-embedded gray cast iron model. Through multidimensional analysis encompassing friction force, grinding mark depth, phase transformation behavior, internal deformation, stress-strain distribution, temperature variation, bond length, and potential energy, which revealed graphite's dual role: acting as a solid lubricant to reduce friction force while simultaneously serving as a stress concentration source that promotes the formation of grinding debris. The study demonstrates that graphite flakes undergo significant out-of-plane bending and wrinkling under the combined action of normal load and shear force, effectively dissipating energy and influencing the plastic strain distribution of the surrounding matrix. The graphite-iron interface, characterized by low shear strength, becomes a preferred slip plane but also represents a vulnerable region for crack initiation and propagation. Furthermore, graphite's exceptionally high in-plane thermal conductivity enables rapid dissipation of frictional heat, reducing peak temperatures and mitigating localized thermal damage. Experiments confirm that crack propagation along the graphite/matrix interface leads to graphite flake pull-out and the formation of micro-exfoliation pits. This study reveals the friction and wear mechanisms of gray cast iron brake discs at the atomic scale.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206477"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A new experimental technique for assessing impact-sliding wear resistance of materials for non-synchronous transmissions 一种评估非同步传动材料冲击滑动磨损性能的新实验技术

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-15 DOI: 10.1016/j.wear.2025.206476

Maria Wojtowicz, Urban Wiklund, Robin Elo, Staffan Jacobson

{"title":"A new experimental technique for assessing impact-sliding wear resistance of materials for non-synchronous transmissions","authors":"Maria Wojtowicz, Urban Wiklund, Robin Elo, Staffan Jacobson","doi":"10.1016/j.wear.2025.206476","DOIUrl":"10.1016/j.wear.2025.206476","url":null,"abstract":"<div><div>Non-synchronous transmission can reduce the weight and increase efficiency of electrical heavy vehicles, with great potential to increase the vehicle range and load capacity. However, it comes at a cost, also increasing missed gear shifts resulting in impact-sliding wear. In this work, a new test rig is presented, allowing accelerated wear testing of component materials that need to withstand numerous severe impact-sliding events, with each event simulating a missed gear shift. The test rig enables controlled variation and measurement of important parameters such as relative velocity, normal load, impact depth and impact force. Demonstrator tests show that it is possible to distinguish between small alloying differences of relevant materials, and quickly reach numbers of impact-sliding events that real components would experience in years of operation. The wear mechanisms of rig tested samples are compared to, and mimic, real industrial testing of non-synchronous transmission, showing a complex process including a wide impact surface with extruded material on the edges, formation of tongues in the impact direction, delamination, spalling, and both small and large fractures. The acceleration of the test, with a high frequency of high energy impacts and pre-shaped impact geometry results in a full test taking hours instead of months. Additionally, the control of test parameters and the sample size enables both detailed wear studies and screening of candidate materials, facilitating much quicker development of materials and surface treatments to withstand severe impact-sliding events.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206476"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effect of pearlite and proeutectoid ferrite on crack propagation in hypoeutectoid rails considering microstructural deformation 珠光体和原共析铁素体对考虑显微组织变形的亚共析钢轨裂纹扩展的影响

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.wear.2025.206474

Honghao Wang , Wenjian Wang , Shuyue Zhang , Hudong Xue , Haohao Ding , Zhiyong Shi , Enrico Meli , Roger Lewis , Qiyue Liu , Andrea Rindi , Zhongrong Zhou

{"title":"Effect of pearlite and proeutectoid ferrite on crack propagation in hypoeutectoid rails considering microstructural deformation","authors":"Honghao Wang , Wenjian Wang , Shuyue Zhang , Hudong Xue , Haohao Ding , Zhiyong Shi , Enrico Meli , Roger Lewis , Qiyue Liu , Andrea Rindi , Zhongrong Zhou","doi":"10.1016/j.wear.2025.206474","DOIUrl":"10.1016/j.wear.2025.206474","url":null,"abstract":"<div><div>The evolution of microstructure influences rolling contact fatigue (RCF) crack propagation behavior. This study aims to investigate the effect of pearlite and proeutectoid ferrite on crack propagation in hypoeutectoid rails. The dry-wet alternation RCF tests were conducted using different hypoeutectoid rail steels to simulate crack propagation within the deformation and matrix layers. Subsequently, the relationship between microstructure characteristics (proeutectoid ferrite content (PF%) and pearlite interlamellar spacing (ILS)) and crack propagation behaviors (crack characteristics and propagation modes) was explored using statistical analysis. The results indicated that proeutectoid ferrite played a crucial role in determining crack propagation paths. Specifically, a higher PF% facilitated crack propagation at a smaller angle within the deformation layer, while also promoting more pronounced branching in the matrix layer. Crack propagation along proeutectoid ferrite exhibited a greater tendency, as evidenced by its proportion being approximately four times that of PF%. Moreover, in the deformation layer, proeutectoid ferrite was stretched into plastic flow lines that served as grain boundaries, which can suppress the upward crack propagation. The reduction of ILS would decrease the degree of deformation, crack depth, and the proportion of transgranular propagation. Within the matrix layer, the rail steels with a lower ILS exhibited a notable reduction in the proportion of transgranular propagation, causing the crack propagation along pearlite lamellae with lower energy dissipation.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206474"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Influence of lubrication state on the fretting wear behavior and mechanism of steel wire in the internal spiral contact of wire rope 润滑状态对钢丝绳内螺旋接触中钢丝微动磨损行为及机理的影响

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.wear.2025.206469

Kun Huang , Xiangdong Chang , Yuxing Peng , Wei Tang , Zhou Zhou , Hao Lu , Xiuheng Zhang , Gushuo Jiang , Ran Deng

{"title":"Influence of lubrication state on the fretting wear behavior and mechanism of steel wire in the internal spiral contact of wire rope","authors":"Kun Huang , Xiangdong Chang , Yuxing Peng , Wei Tang , Zhou Zhou , Hao Lu , Xiuheng Zhang , Gushuo Jiang , Ran Deng","doi":"10.1016/j.wear.2025.206469","DOIUrl":"10.1016/j.wear.2025.206469","url":null,"abstract":"<div><div>Fretting wear in mine hoisting rope is a key factor affecting its service reliability, and lubrication state plays a decisive role in this process. In this study, the fretting wear characteristics of wires under six working conditions of dry friction, oil/grease lubrication, water lubrication, oil-starved and grease-starved lubrication were systematically studied by a specialized fretting device. The results show that different lubrication states significantly affect the evolution law and steady-state value of coefficient of friction (COF). The dry friction is the highest, the full oil/grease lubrication is lower, the water lubrication is in the middle and fluctuates significantly, and the COF is close to dry friction at the end of starved lubrication. In addition, the fretting regime between wires is also closely related to the lubrication state between wires. Furthermore, sufficient oil/grease lubrication significantly reduces wear, while poor lubrication (dry friction, oil-starved, grease-starved, water) aggravates wear. The wear mechanisms of dry friction and oil/grease-deficient lubrication are mainly characterized by abrasive, surface fatigue and adhesion. Dry friction and oil/grease-deficient lubrication also involve tribochemical reaction. The wear mechanisms of water lubrication is mainly abrasive and surface fatigue. The wear mechanism of oil/grease lubrication is mainly abrasive.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206469"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Development of a white-box model for predicting in-process thermo-mechanical loading on PVD-coated carbide tools 开发用于预测pvd涂层硬质合金刀具在加工过程中热机械负荷的白盒模型

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-05 DOI: 10.1016/j.wear.2025.206458

T. Bergs , M. Meurer , M. Abouridouane , K. Bobzin , C. Kalscheuer , M. Tayyab

{"title":"Development of a white-box model for predicting in-process thermo-mechanical loading on PVD-coated carbide tools","authors":"T. Bergs , M. Meurer , M. Abouridouane , K. Bobzin , C. Kalscheuer , M. Tayyab","doi":"10.1016/j.wear.2025.206458","DOIUrl":"10.1016/j.wear.2025.206458","url":null,"abstract":"<div><div>PVD coatings are widely used to improve tool life and machining efficiency, yet accurate tool-life prediction remains challenging because thin layers require very fine meshes, coating wear mechanisms are complex, and the coating-substrate interface introduces difficult thermal and mechanical boundary conditions. Traditional white-box models frequently neglect coating effects due to simplified assumptions, whereas black-box models capture complexity but lack physical interpretability. Grey-box approaches offer a promising compromise but require detailed coating- and load-dependent datasets. This study develops a finite-element (FE) model to predict in-process thermo-mechanical loading on PVD-coated carbide tools. The white-box model supports the extensive experimental testing typically required to generate thermo-mechanical load tables for grey-box tool-life prediction. Monolayer TiAlCrSiN and bilayer TiAlCrSiN/TiAlCrSiON coatings-commercially established and representative of industrial thermal-barrier behaviour were tested in orthogonal cutting of C45 + N steel. Cutting forces and tool temperatures were measured using a dynamometer and an embedded two-colour pyrometer for model validation. The model reproduces forces and temperatures with deviations below 10 % and shows that tool wear strongly affects local thermo-mechanical load distributions, while global loads remain similar between the coatings. Friction characterization reveals a tribological advantage of the bilayer coating, with reduced interface friction and smoother surfaces. High-resolution stress and temperature fields are correlated with coating properties to improve wear modelling and provide structured inputs for future grey-box model development.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206458"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Experimental study of impregnated diamond bit part 2: Effect of the bit wear state on the drilling response 浸渍金刚石钻头试验研究第二部分：钻头磨损状态对钻进响应的影响

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.wear.2025.206466

Rui Huang, Thomas Richard, Masood Mostofi

{"title":"Experimental study of impregnated diamond bit part 2: Effect of the bit wear state on the drilling response","authors":"Rui Huang, Thomas Richard, Masood Mostofi","doi":"10.1016/j.wear.2025.206466","DOIUrl":"10.1016/j.wear.2025.206466","url":null,"abstract":"<div><div>Impregnated diamond bits are widely used in hard rock drilling due to their robust structure and self-sharpening nature. In the companion study, we showed how the depth of cut and the rock properties (Mohs hardness) control the dominant wear mechanisms and proposed a method to select operating parameters that balance productivity with bit wear. This sequel paper develops quantitative relationships between the bit wear state and the drilling response — that is, the relationship between the bit kinematics (feed rate and angular velocity) and the forces acting on the bit (axial thrust and torque). These relations yield a relation between the performance (feed rate) and the energy or power required to achieve the performance, which is essential to improve drilling efficiency. These relations provide also the framework to analyse drilling data in real time to assess the bit state of wear and identify optimum drilling parameters.</div><div>A laboratory experimental methodology was developed to (i) measure the bit wear state and (ii) construct the drilling response. Controlled drilling experiments were conducted on a high-precision rig using three sizes of impregnated diamond tools across a wide range of wear states, characterized by diamond wear flats, matrix wear flats, and average diamond protrusion. Bit wear was measured before and after each test using an optical microscope. Experiments were performed under varying operating conditions, including different rock types, drilling fluids, flow rates, and rotation speeds.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206466"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Investigation on the tribological performance of (NiCrFe)83(TiAl)17 high-entropy alloy-matrix self-lubricating coatings in helium environment （NiCrFe）83(TiAl)17高熵合金基自润滑涂层在氦环境下的摩擦学性能研究

IF 6.1 1区工程技术

Wear Pub Date : 2026-02-01 Epub Date: 2025-12-04 DOI: 10.1016/j.wear.2025.206449

Dongsheng Yang , Zhilong Zhao , Yushan Geng , Qichun Sun , Wenyuan Chen , Juanjuan Chen , Shengyu Zhu , Jun Cheng , Peiqing La

{"title":"Investigation on the tribological performance of (NiCrFe)83(TiAl)17 high-entropy alloy-matrix self-lubricating coatings in helium environment","authors":"Dongsheng Yang , Zhilong Zhao , Yushan Geng , Qichun Sun , Wenyuan Chen , Juanjuan Chen , Shengyu Zhu , Jun Cheng , Peiqing La","doi":"10.1016/j.wear.2025.206449","DOIUrl":"10.1016/j.wear.2025.206449","url":null,"abstract":"<div><div>This study successfully developed a (NiCrFe)<sub>83</sub>(TiAl)<sub>17</sub>-Al<sub>2</sub>O<sub>3</sub>-Ag/(BaF<sub>2</sub>/CaF<sub>2</sub>) composite self-lubricating coating and systematically investigated its tribological performance in helium environments from room temperature to 600 °C. The results revealed that the coating possessed a stable high-entropy phase structure consisting of a (Ni, Ti)-enriched BCC matrix and (Cr, Fe)-enriched FCC precipitates. The Al<sub>2</sub>O<sub>3</sub> reinforcement phase increased the surface hardness to 692.17 HV through particle strengthening, representing a 21.3 % improvement over the (NiCrFe)<sub>83</sub>(TiAl)<sub>17</sub> base material. The synergistic effect between the lubricating phases and Al<sub>2</sub>O<sub>3</sub> reduced the friction coefficient to 0.25–0.31 and significantly decreased the wear rate to (0.8–3.5) × 10<sup>−5</sup> mm<sup>3</sup>/N·m within the RT-400 °C range. As temperature increased, the friction interface underwent systematic evolution: a partial lubricating film formed at RT with dominant abrasive wear; the composite lubricating film expanded between 200–400 °C, effectively suppressing three-body wear; at 600 °C, BCC phase depletion caused the wear mechanism to transition to a mixed abrasive-adhesive mode. The synergistic strengthening between Al<sub>2</sub>O<sub>3</sub> and the lubricating phases was identified as the key factor enabling the coating's excellent performance across the wide temperature range.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"586 ","pages":"Article 206449"},"PeriodicalIF":6.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

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