IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-22 DOI: 10.1016/j.wear.2026.206557

Hwaran Lee , Jeremy L. Gilbert

{"title":"Immersion and proteins reduce nanowear damage of CoCrMo under AFM single-asperity reciprocating sliding","authors":"Hwaran Lee , Jeremy L. Gilbert","doi":"10.1016/j.wear.2026.206557","DOIUrl":"10.1016/j.wear.2026.206557","url":null,"abstract":"<div><div>This study investigated the environmental effect on the tribocorrosion behavior of cobalt chromium molybdenum (CoCrMo) alloy using atomic force microscopy (AFM)-based nano-tribology under three environmental conditions: (1) air, (2) phosphate-buffered saline (PBS), and (3) bovine serum albumin (BSA) in PBS. Cyclic single-line scratches (8 μm) were generated using an AFM diamond tip (nominal radius 340 nm) under normal forces ranging from 137 to 170 μN (14.1–15.2 GPa stress). Tribological performance in solution-based conditions demonstrated significantly lower wear compared to air, contrary to the widely-accepted synergy of wear and corrosion. After 400 scratches, wear depth in air reached 62 nm, but reduced to 12 nm in PBS and further decreased to 7 nm in BSA. Similarly, wear volume in air (0.047 μm<sup>3</sup>), was 8 times greater than in PBS (0.0061 μm<sup>3</sup>) and 23 times greater than in BSA (0.0018 μm<sup>3</sup>) (p < 0.0001). Likewise, tests in air produced a greater volume of wear debris (0.116 μm<sup>3</sup>) than PBS (0.0076 μm<sup>3</sup>) and BSA (0.0018 μm<sup>3</sup>). Introducing fluid and albumin may alter the mechanical and electrochemical environment of CoCrMo oxide films to reduce wear. Unidentified proteinaceous aggregates in BSA environment suggest that proteins lubricate the surfaces and/or interacts with wear debris or ions.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206557"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079452","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

Mechanical properties and tribological behavior of AlSi11Cu alloy manufactured by additive friction stir deposition and subsequent T6 treatment 添加搅拌摩擦沉积和T6处理制备的AlSi11Cu合金的力学性能和摩擦学行为

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-16 DOI: 10.1016/j.wear.2026.206535

Ziming Zeng , Yunyi Liu , Yidi Li , Hui Wang , Ruilin Lai , Yunping Li

{"title":"Mechanical properties and tribological behavior of AlSi11Cu alloy manufactured by additive friction stir deposition and subsequent T6 treatment","authors":"Ziming Zeng , Yunyi Liu , Yidi Li , Hui Wang , Ruilin Lai , Yunping Li","doi":"10.1016/j.wear.2026.206535","DOIUrl":"10.1016/j.wear.2026.206535","url":null,"abstract":"<div><div>The AlSi11Cu alloy is widely applied in automotive components, favored for its inherent wear resistance contributed by the dispersion of hard Si particles. However, the needle-like silicon phase and coarse iron-rich intermetallic compounds formed by traditional casting methods severely limit the mechanical properties and wear performance of the material. To address this issue, this work proposes additive friction stir deposition (AFSD) followed by T6 heat treatment as a novel and targeted microstructural control approach. The adopted AFSD + T6 approach yields a refined microstructure with fine equiaxed grains and spheroidized second phases, thereby improving both mechanical properties and wear resistance. Compared with the cast alloy, the AFSD + T6 alloy exhibited a 58.3 % increase in yield strength, a 48.3 % increase in ultimate tensile strength, and a 66.6 % improvement in ductility. The AFSD + T6 alloy exhibited significantly reduced friction coefficient and wear rate at both 70 N and 140 N, with wear rates reaching only 7.5 % and 8.7 % of that of the cast alloy. All sliding wear tests were conducted under boundary lubrication regime using a GCr15 steel ball as the counterface material to simulate the piston ring-cylinder liner contact. This improvement is primarily attributed to microstructural refinement and enhanced particle/matrix bonding, which effectively suppresses fatigue crack initiation and propagation. As a result, fatigue wear is mitigated, allowing the formation and retention of a protective oxide tribo-layer that shifts the dominant wear mechanism to oxidative wear, thereby further enhancing wear resistance.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206535"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981553","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

Fretting fatigue performance and life prediction of GH4169/FGH96 arc dovetail joints at high temperature GH4169/FGH96弧尾接头高温微动疲劳性能及寿命预测

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-09 DOI: 10.1016/j.wear.2026.206524

Xiyuan Zhang , Dasheng Wei , Le Han , Tianxing Chai , Xiang Liu , Shun Yang

{"title":"Fretting fatigue performance and life prediction of GH4169/FGH96 arc dovetail joints at high temperature","authors":"Xiyuan Zhang , Dasheng Wei , Le Han , Tianxing Chai , Xiang Liu , Shun Yang","doi":"10.1016/j.wear.2026.206524","DOIUrl":"10.1016/j.wear.2026.206524","url":null,"abstract":"<div><div>To address the challenges associated with fretting fatigue in aeroengine components, this study proposes a comprehensive analysis framework based on multiaxial damage criteria. The mechanical behavior of GH4169 arc dovetail joints is systematically investigated, and a corresponding life prediction model is developed. High-temperature fretting fatigue experiments, combined with multiple characterization techniques, are employed to acquire data on relative displacement, fracture morphology, surface wear, and elemental composition, thereby enabling an in-depth understanding of the damage evolution process. A three-dimensional finite element model of the arc dovetail structure is constructed, incorporating the Chaboche constitutive model to accurately capture stress-strain responses in critical regions of the tenon. A customized post-processing routine is implemented to visualize the multiaxial damage field. Based on the resulting damage distribution, a gradient-corrected life prediction method is proposed. The results indicate that the arc dovetail joint design effectively alters the stress distribution, thereby reducing fretting fatigue damage. Moreover, the proposed life prediction method demonstrates good physical relevance and prediction accuracy.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206524"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981699","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

Deformation hardening mechanism of laser cladded medium manganese steel coating during wear process 激光熔覆中锰钢涂层磨损过程中的变形硬化机理

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-23 DOI: 10.1016/j.wear.2026.206511

Qingyue Meng , Haifeng Yang , Haiyu Liu , Hao Liu , Jingbin Hao , Songyong Liu

{"title":"Deformation hardening mechanism of laser cladded medium manganese steel coating during wear process","authors":"Qingyue Meng , Haifeng Yang , Haiyu Liu , Hao Liu , Jingbin Hao , Songyong Liu","doi":"10.1016/j.wear.2026.206511","DOIUrl":"10.1016/j.wear.2026.206511","url":null,"abstract":"<div><div>Medium-manganese steel (MMS) exhibits excellent conventional wear resistance, but its work-hardening ability is limited, resulting in brittle spalling and decrease its wear resistance under high load wear conditions. This study innovatively adopted laser cladding to prepare a MMS coating capable of sustained hardening under high load wear conditions. It analyzed the phase composition and microstructure of MMS coating. investigated the friction and wear properties of the coating under different wear loads and wear durations with a counter-ball made of Al<sub>2</sub>O<sub>3</sub>. The research results indicate that the deformation hardening mechanism of the coating is primarily dominated by Transformation Induced Plasticity (TRIP), with Twining Induced Plasticity (TWIP) providing synergistic strengthening. When the wear load was increased to 150 N, the strain hardening performance of the coating was fully exerted. At this point, the hardness of the wear track reached as high as 779.02 HV<sub>0.1</sub>, while the hardness of the coating before wear was approximately 299.51 HV<sub>0.1</sub>, it indicates that the MMS coating has excellent strain hardening capability. This study proposes the preparation of wear-resistant coatings using laser cladding MMS, which will provide a new solution to address the issue of insufficient wear resistance of MMS under high-stress conditions, a problem caused by its inadequate strain hardening capability.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206511"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079450","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

Modeling and analysis of abrasive particles impact behavior in maskless abrasive air-jet machining at oblique impact angles 斜冲击角下无掩模磨料射流加工中磨料颗粒冲击行为的建模与分析

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-27 DOI: 10.1016/j.wear.2026.206562

Xinyue Jing , Guiguan Zhang , Xinzhao Ren , Ying Li , Yifan Sun , Yanhou Liu , Peng Yao , Yuli Sun , Yugang Zhao

{"title":"Modeling and analysis of abrasive particles impact behavior in maskless abrasive air-jet machining at oblique impact angles","authors":"Xinyue Jing , Guiguan Zhang , Xinzhao Ren , Ying Li , Yifan Sun , Yanhou Liu , Peng Yao , Yuli Sun , Yugang Zhao","doi":"10.1016/j.wear.2026.206562","DOIUrl":"10.1016/j.wear.2026.206562","url":null,"abstract":"<div><div>Abrasive Jet Machining (AJM) is an advanced non-traditional machining technology that offers a distinct approach to material processing. AJM prevents abrasive embedding when applied to polydimethylsiloxane (PDMS) using maskless abrasive air-jet machining at oblique angles (MAJM-OA). However, fabricating microchannels with tailored structural features on PDMS surfaces remains a challenge. In this study, computational fluid dynamics (CFD) analysis is employed to investigate the evolution of abrasive impact behavior in impingement zones with varying microchannel structural characteristics. The results indicate that the stagnation zone promotes secondary rebounds of abrasive particles in deep channels, thereby enabling effective removal of sidewall erosion. MAJM-OA experiments demonstrate that microchannels with distinct structural characteristics can be fabricated by controlling the jet pressure and the number of machining passes. This study elucidates the underlying mechanisms governing microchannel structural evolution in MAJM-OA and presents a straightforward and cost-effective strategy for constructing a feature database for diverse microchannel profiles. These findings contribute significantly to the ultra-precision control of microchannel fabrication via MAJM-OA.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206562"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079454","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 D-gun sprayed (FeCrNi)83(TiAl)17 high-entropy alloy-matrix composite coatings in vacuum environment over wide temperature range D-gun喷涂（FeCrNi）83(TiAl)17高熵合金基复合涂层在真空环境下宽温度范围的摩擦学性能研究

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-14 DOI: 10.1016/j.wear.2026.206533

Dongsheng Yang , Hanzhi Zhang , Yushan Geng , Rui Zhang , Qichun Sun , Wenyuan Chen , Jun Cheng , Juanjuan Chen , Shengyu Zhu , Peiqing La , Yong Yang

{"title":"Investigation on the tribological performance of D-gun sprayed (FeCrNi)83(TiAl)17 high-entropy alloy-matrix composite coatings in vacuum environment over wide temperature range","authors":"Dongsheng Yang , Hanzhi Zhang , Yushan Geng , Rui Zhang , Qichun Sun , Wenyuan Chen , Jun Cheng , Juanjuan Chen , Shengyu Zhu , Peiqing La , Yong Yang","doi":"10.1016/j.wear.2026.206533","DOIUrl":"10.1016/j.wear.2026.206533","url":null,"abstract":"<div><div>High-entropy alloy (HEA) self-lubricating coatings exhibit excellent mechanical properties and stable tribological performance, demonstrating potential applications in satellite solar array drive assemblies and foil air bearings within aerospace propulsion systems. This study utilized detonation spraying to fabricate coatings of (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>, (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>-Ag-BaF<sub>2</sub>/CaF<sub>2</sub> and (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>-Ag-BaF<sub>2</sub>/CaF<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>. The (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>-Ag-BaF<sub>2</sub>/CaF<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> coating, demonstrated the enhanced mechanical performance (surface hardness of 694.7 HV, cross-sectional hardness ranging from 634.3 to 674.3 HV) and maintained a stable friction interface. This coating demonstrated the ability to form a lubricating film over a broad temperature range in vacuum, effectively protecting the exposed worn surfaces at the contact interface. Compared to the (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub> coating, the modified coating of (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>-Ag-BaF<sub>2</sub>/CaF<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> showed significantly reduced friction coefficient and wear rate under vacuum from room temperature (RT) to 600 °C, stabilizing at 0.26–0.46 and (1.3–3.6) × 10<sup>−5</sup> mm<sup>3</sup>/(N·m), respectively. Notably, at RT, the wear rate of the (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub>-Ag-BaF<sub>2</sub>/CaF<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> coating was reduced by a factor of 17 compared to the (FeCrNi)<sub>83</sub>(TiAl)<sub>17</sub> coating.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206533"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024656","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

Study on the evolution of braking interface friction behavior of high-speed trains under ice and snow conditions on long steep downhill lines 长陡坡线路冰雪条件下高速列车制动界面摩擦行为演化研究

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-19 DOI: 10.1016/j.wear.2026.206554

Zhicheng He , Hang Liu , Qixiang Zhang , Wei Chen , Aiguo Shi , Xiaocui Wang , Zhiyong Fan , Jiliang Mo

{"title":"Study on the evolution of braking interface friction behavior of high-speed trains under ice and snow conditions on long steep downhill lines","authors":"Zhicheng He , Hang Liu , Qixiang Zhang , Wei Chen , Aiguo Shi , Xiaocui Wang , Zhiyong Fan , Jiliang Mo","doi":"10.1016/j.wear.2026.206554","DOIUrl":"10.1016/j.wear.2026.206554","url":null,"abstract":"<div><div>In high-altitude cold regions with long downhill lines, the friction braking system of high-speed trains is vulnerable to environmental disturbances and thermo-mechanical coupling, posing serious safety challenges. This study investigates the impact of snowy conditions on the tribological behavior of the braking interface. A scaled braking test rig was developed to simulate low-temperature snowy environments, and continuous drag braking tests were conducted under both room temperature (RT) and ice and snow (IS) conditions. Friction heat accumulation, friction coefficient evolution, wear morphology, and debris behavior were analyzed to clarify the governing factors of interfacial contact. The results show that IS condition markedly changed the thermal response and contact state of the friction pair. With rising temperature, the system shifts from ice-film lubrication to water-film lubrication and finally to dry friction. In the ice-film stage, the lubricating role of the ice film produces a much lower friction coefficient than under RT, while its heat absorption and dissipation capacities significantly suppress the temperature rise. As the ice melts, the interface becomes liquid-lubricated. The friction coefficient increases stepwise, lubrication remains unstable, and debris adhesion and re-entry intensify heat buildup, accelerating block temperature rise. Once the water film evaporates, dry friction dominates, with larger friction coefficient fluctuations and more severe furrow wear induced by sheared debris. This study improves understanding of braking interface evolution under snowy low temperatures and offers theoretical support for performance regulation and safety improvement in cold-region high-speed trains.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206554"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024661","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 normalising treatment on the microstructural characteristics and friction behaviour of U71Mn flash-butt-welded joints at extremely low temperatures 正火处理对U71Mn极低温闪焊接头组织特征和摩擦行为的影响

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-14 DOI: 10.1016/j.wear.2026.206513

Tingting Liao , Xi Zhang , Jiehui Liu , Chenyang Zhu , Peng Su , Haoxiang Xu , Zhenchuan Wei , Biao Guo , Qibing Lv , Guoqing Gou

{"title":"Effect of normalising treatment on the microstructural characteristics and friction behaviour of U71Mn flash-butt-welded joints at extremely low temperatures","authors":"Tingting Liao , Xi Zhang , Jiehui Liu , Chenyang Zhu , Peng Su , Haoxiang Xu , Zhenchuan Wei , Biao Guo , Qibing Lv , Guoqing Gou","doi":"10.1016/j.wear.2026.206513","DOIUrl":"10.1016/j.wear.2026.206513","url":null,"abstract":"<div><div>U71Mn rails, which are very prevalent in China's railway systems, must withstand extreme weather environments, but the cold-weather performance of their base metal and welded joints has not been systematically examined. To investigate the wear resistance and reliability of flash-welded joints in U71Mn rails in extremely low-temperature environments, this study examined the microstructure, mechanical properties, and service behaviour at various temperatures (20, 0, −20, and −40 °C) for U71Mn rail base metal, as-welded joints, and normalised joints. The results indicate that compared with the base metal, both the as-welded and normalised joints exhibit finer pearlite lamellar spacing. At zero and subzero temperatures, the friction coefficient decreased owing to the formation of a water film or thin ice layer from condensed water vapour. Simultaneously, lower temperatures reduced the severity of adhesive wear. However, embrittlement at low temperatures increased the wear rates in each microregion, thereby worsening the overall wear resistance. Taken together, these findings were used to establish the influence of temperature on the dominant wear mechanism. This study provides essential data and theoretical guidance for applying flash welding to join rails operating in low-temperature environments, contributing to the reliability of railway transportation.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206513"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981704","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

Transient wear prediction and optimization for water-lubricated stave bearings 水润滑壁轴承瞬态磨损预测与优化

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-09 DOI: 10.1016/j.wear.2025.206483

Juan Guo , Ke Xiao , Dongxing Tang

{"title":"Transient wear prediction and optimization for water-lubricated stave bearings","authors":"Juan Guo , Ke Xiao , Dongxing Tang","doi":"10.1016/j.wear.2025.206483","DOIUrl":"10.1016/j.wear.2025.206483","url":null,"abstract":"<div><div>To fill the research gap on the wear behavior of water-lubricated stave bearings (WLSBs) under mixed lubrication conditions, a transient friction–wear model was developed by coupling a transient mixed lubrication model with a transient wear model, incorporating cavitation effects and evolving surface roughness. Two wear models—a modified Archard wear model and a frictional fatigue wear model—were evaluated, showing higher predictive accuracy of the fatigue-based wear model compared with experimental results. Based on this framework, two single-parameter optimization strategies targeting curvature radius and inclination angle of staves were proposed, and their sensitivity to key parameters (number of staves and stave width ratio) was analyzed. Subsequently, a dual-parameter optimization was conducted, and its effectiveness in performance improvements was quantitatively assessed. The results indicate that a negative stave curvature radius coefficient (concave staves) combined with a small number of staves (≤8) and a large stave width ratio (≥0.8), or a moderate inclination angle (0.01°–0.04°) with commonly used stave numbers (6-10) across a wide range of width ratios, can enhance the mixedlubrication and anti-wear performance of WLSBs compared with untreated ones. Moreover, the findings reveal that dual-parameter optimization outperforms single-parameter strategies, particularly in wear reduction, achieving an additional 19–42 % decrease in wear volume under the current operating conditions. This work provides meaningful insights into the design of high-performance water-lubricated bearing systems in engineering applications.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206483"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981703","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 sliding speed and sliding distance on the wear and friction behaviour of LM6-1.5 wt% Si3N4 nanocomposite 滑动速度和滑动距离对LM6-1.5 wt% Si3N4纳米复合材料磨损摩擦性能的影响

IF 6.1 1区工程技术

Wear Pub Date : 2026-03-15 Epub Date: 2026-01-13 DOI: 10.1016/j.wear.2026.206532

Debayan Mandal , Sudip Banerjee , Ranjan Basak , Joyjeet Ghose

{"title":"Effect of sliding speed and sliding distance on the wear and friction behaviour of LM6-1.5 wt% Si3N4 nanocomposite","authors":"Debayan Mandal , Sudip Banerjee , Ranjan Basak , Joyjeet Ghose","doi":"10.1016/j.wear.2026.206532","DOIUrl":"10.1016/j.wear.2026.206532","url":null,"abstract":"<div><div>Aluminium based nanocomposites are promising candidates for different automotive parts like brake discs, clutch plates, cams and aerospace components like actuator joints, landing gear bushings, rotors, etc., where high strength-to-weight ratio and dry sliding wear resistance are critically important. Since these components frequently get exposed to dry sliding tribological environments like high sliding speed as well as longer sliding distance, understanding their dry sliding wear and friction characteristics is essential for reliable material design and performance of these components. Therefore, the purpose of the current study is to examine the effect of sliding speeds and distances on dry sliding tribological response on LM6-1.5 wt% Si<sub>3</sub>N<sub>4</sub> nanocomposite. Nanocomposite is synthesized through ultrasonic assisted stir casting (USC). Microstructural characterizations are evaluated through optical microscopy, FESEM, EDX, XRD and elemental mapping to assess successful incorporation and distribution of Si<sub>3</sub>N<sub>4</sub> Nanoparticles. Pin-on-disc experiment is conducted by using EN31 steel disc as the counterface across sliding speed and distance ranging between 0.25 and 1.25 m/s and 300–3000 m respectively. Incorporation of Si<sub>3</sub>N<sub>4</sub> nanoparticles enhanced wear resistance around 30–40 % compared to base alloy under experimental conditions, indicating improved load-bearing ability and resistance to plastic deformation. Worn surfaces and wear debris are further analyzed through FESEM and EDX to evaluate the primary wear mechanisms. Typical observation of worn surfaces depicts how particle incorporation suppresses delamination as well as adhesion and shifts towards abrasion. This mechanistic change renders a new approach for tailoring material design in tribological applications.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"589 ","pages":"Article 206532"},"PeriodicalIF":6.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981702","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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