Tribology International最新文献_第4页

Finite element modal analysis of a twin-disc tribometer: Sensitivity analysis and experimental validation using vibrometry 双盘摩擦计的有限元模态分析：灵敏度分析和使用振动仪的实验验证

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-02-03 DOI: 10.1016/j.triboint.2026.111778

G. Brunbauer , M.J. Hochrainer , S. Krenn , A.M. Puhwein , M.S. Bonney , S.J. Eder , P.A. Fotiu

Investigating tribological systems using tribometers is challenging due to the complex interaction between machine vibrations and contact forces. Numerical simulations are therefore essential for interpreting tribological measurements and for improving the design and reproducibility of test rigs. To support the analysis of wear patterns by coupling structural dynamics and contact behaviour, this study develops and validates a high-fidelity finite element model of a twin-disc tribometer as the structural-dynamic foundation of a digital twin. The model includes detailed geometry, bolt pretension, nonlinear contact, nonlinear joints and rigid body components to accurately capture the dynamic behaviour of the system. A sensitivity study quantifies the influence of model parameters on the modal system characteristics. Operational modal analysis of vibrometer measurements confirms the numerical model, and enables the identification of vibration modes that strongly modulate the disc contact forces. These modes are shown to be governed primarily by disc cover stiffness, contact friction and bearing stiffness, explaining experimentally observed shifts in resonance frequencies associated with periodic wear patterns. The validated model therefore provides insights into the interaction between machine dynamics and contact behaviour and forms a basis for the development of a digital twin, taking machine dynamic effects into account.

由于机器振动和接触力之间复杂的相互作用，使用摩擦计研究摩擦学系统具有挑战性。因此，数值模拟对于解释摩擦学测量和改进试验台的设计和再现性至关重要。为了支持通过耦合结构动力学和接触行为来分析磨损模式，本研究开发并验证了双盘摩擦计的高保真有限元模型，作为数字孪生的结构动力学基础。该模型包括详细的几何结构、螺栓预紧、非线性接触、非线性关节和刚体组件，以准确地捕捉系统的动态行为。灵敏度研究量化了模型参数对模态系统特性的影响。振动计测量的运行模态分析证实了数值模型，并能够识别强烈调节圆盘接触力的振动模式。这些模式主要受圆盘盖刚度、接触摩擦和轴承刚度的影响，解释了实验观察到的与周期性磨损模式相关的共振频率的变化。因此，经过验证的模型提供了对机器动力学和接触行为之间相互作用的见解，并为考虑到机器动态效应的数字双胞胎的开发奠定了基础。

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引用次数: 0

Comparative tribological behavior of phosphazene derivatives with different fluorine substituents in three base oils 含不同氟取代基的磷腈衍生物在三种基础油中的摩擦学行为比较

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-02-03 DOI: 10.1016/j.triboint.2026.111788

Xixiang Wang , Shunzhen Ren , Yuefeng Ma , Zhipeng Li , Tianhui Ren

In this work, three phosphazene derivatives (HCCP-CH₃, HCCP-CF₃ and HCCP-OCF₃) were synthesized and lubrication mechanisms characterized. The tribological behaviors as additives was evaluated in vegetable oil (JVBO), pentaerythritol tetraoleate (PETO-4) and coal-to-liquid (CTL) by using a four-ball friction tester under a wide range of concentrations and loads, which indicates that all three phosphazene derivatives have excellent load-carrying capacity, anti-wear, and friction-reducing properties. The characterizing results for the tribofilm show that the fluorinated phosphonitrile derivatives significantly enhanced the tribological performance, among which HCCP-OCF3 exhibits the most remarkable friction-reducing and anti-wear properties. The thermogravimetric analysis (TGA) results show that HCCP-OCF₃ owns the higher thermal stability for among these three structures. The formation mechanism was an initial iron oxide layer forms under thermal and mechanical stress, followed by a compact Fe–F/Fe–O–P layer serving as an extreme-pressure barrier, and a Fe–N layer developing near the steel surface due to nitrogen diffusion. The results demonstrate that the substitution structure of phosphazene derivatives significantly influences tribofilm formation, friction behavior, and extreme-pressure performance, revealing their feasibility as integrated lubricating and flame-retardant additives for advanced lubrication systems.

本文合成了三种磷腈衍生物（HCCP-CH3、HCCP-CF3和HCCP-OCF3），并对其润滑机理进行了表征。采用四球摩擦试验机，对三种磷腈衍生物在植物油（JVBO）、四油酸季戊四醇（PETO-4）和煤制液（CTL）中的摩擦学性能进行了测试，结果表明，三种磷腈衍生物均具有良好的承载性能、抗磨性能和减摩性能。摩擦膜的表征结果表明，氟化膦腈衍生物显著提高了摩擦膜的摩擦学性能，其中HCCP-OCF3具有最显著的减摩和抗磨性能。热重分析（TGA）结果表明，三种结构中HCCP-OCF3具有较高的热稳定性。其形成机制是在热应力和机械应力作用下形成初始氧化铁层，随后形成致密的Fe-F / Fe-O-P层，作为极压屏障，由于氮的扩散，在钢表面附近形成Fe-N层。结果表明，磷腈衍生物的取代结构显著影响摩擦膜的形成、摩擦行为和极压性能，揭示了它们作为先进润滑系统的综合润滑和阻燃添加剂的可行性。

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引用次数: 0

Insights into microstructure and fretting wear behavior of additively manufactured oxide reinforced FeCrAl alloy for nuclear reactors 核反应堆用增材制造氧化增强FeCrAl合金微观结构及微动磨损性能研究

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-02-03 DOI: 10.1016/j.triboint.2026.111790

K.R. Ramkumar , Salikh Omarov , Christopher Silligman , Mkpe Kekung , Sanika Paranjape , Pial Das , Sougata Roy

The FeCrAl (Iron-Chromium-Aluminum) ferritic alloy is widely recognized for its exceptional oxidation resistance and superior mechanical performance in nuclear applications. Owing to its manufacturing versatility, this alloy has also gained significant importance in the field of additive manufacturing (AM). In the present work, Y₂O₃-reinforced FeCrAl composites were developed using the direct energy deposition (DED) technique with reinforcement concentrations of 0.2 and 0.6 wt%. For comparison, the study also considered pure alloy in wrought form and in-printed form using mechanically milled powders. The study revealed key microstructural features, including morphological differences, and precipitate formation in DED-processed and conventionally fabricated alloys. The findings demonstrate that Y₂O₃ reinforcement significantly enhanced the mechanical and high-temperature wear resistance by promoting the formation of oxide layer.

铁铬铝铁素体合金因其优异的抗氧化性能和卓越的机械性能在核应用中得到广泛认可。由于其制造的多功能性，该合金在增材制造（AM）领域也获得了重要的意义。在本工作中，采用直接能量沉积（DED）技术开发了y2o3增强的FeCrAl复合材料，增强浓度为0.2和0.6 wt%。为了比较，该研究还考虑了纯合金在锻造形式和印刷形式使用机械研磨粉末。该研究揭示了d -加工合金和常规制造合金的关键显微组织特征，包括形态差异和沉淀形成。结果表明，Y2O3增强剂通过促进氧化层的形成，显著提高了合金的机械耐磨性和高温耐磨性。

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引用次数: 0

Achieving near-net-forming of in-situ fabricated SiCp/2024Al composites with high performance by friction stir channeling assisted stationary shoulder friction stir processing 采用搅拌摩擦通道辅助静肩搅拌摩擦工艺制备高性能原位制备SiCp/2024Al复合材料

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-02-02 DOI: 10.1016/j.triboint.2026.111786

Chuanchao Xia , Xiaobo Li , Xiaochao Liu , Xincheng Wang , Tairui Zhang , Biao Chen , Xuecheng Jin , Wenwen Sun , Zhonghua Ni

This study developed a novel friction stir channeling assisted stationary shoulder friction stir processing (CaSSFSP) approach to minimize surface thinning and the ejection of reinforcement particles commonly encountered in conventional FSP, and successfully applied it to fabricate 10 vol% SiCp/2024Al composites. The influence of processing passes on the uniformity of SiC particles distribution was investigated. The microstructural characteristics, mechanical and tribological properties of the composites were systematically analyzed and evaluated. The results demonstrated the excellent near-net-forming capability of the CaSSFSP approach. With an increase in the number of processing passes from two to four, the formation of onion rings was significantly suppressed, leading to a remarkable improvement in the mechanical properties of the composites. After four-pass CaSSFSP processing, the composites achieved an elastic modulus of 92.7 GPa, a 23.9 % improvement over the matrix. Following T6 heat treatment, the yield strength of the composites reached 364.1 MPa, 16.7 % higher than that of the base metal. The wear rate was reduced by 35.2 % compared with the base metal. The enhanced mechanical and tribological properties are mainly attributed to the uniform distribution of SiC particles and their strong interfacial bonding with the aluminum matrix. Theoretical analysis further indicates that grain boundary strengthening and precipitation strengthening are the dominant strengthening mechanisms in the SiCp/2024Al composites.

本研究开发了一种新型的搅拌摩擦通道辅助静止肩摩擦搅拌处理（CaSSFSP）方法，以最大限度地减少传统FSP中常见的表面变薄和增强颗粒的喷射，并成功地将其应用于制备10 vol% SiCp/2024Al复合材料。研究了加工工序对碳化硅颗粒分布均匀性的影响。系统地分析和评价了复合材料的显微组织特征、力学性能和摩擦学性能。结果表明，CaSSFSP方法具有优异的近网络成形能力。随着加工道次从2道次增加到4道次，洋葱环的形成被显著抑制，导致复合材料的力学性能得到显著改善。经过四道CaSSFSP处理后，复合材料的弹性模量达到92.7 GPa，比基体提高23.9 %。经T6热处理后，复合材料的屈服强度达到364.1 MPa，比母材的屈服强度提高16.7 %。与母材相比，磨损率降低35.2% %。SiC颗粒的均匀分布及其与铝基体的强界面结合是提高材料力学性能和摩擦学性能的主要原因。理论分析进一步表明，晶界强化和析出强化是SiCp/2024Al复合材料的主要强化机制。

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引用次数: 0

Friction-corrosion behavior of (Ti42.5Zr42.5Nb10Ta5)100-x Mox (x = 0, 5) high-entropy alloys （Ti42.5Zr42.5Nb10Ta5）100-x Mox （x = 0,5）高熵合金的摩擦腐蚀行为

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-02-02 DOI: 10.1016/j.triboint.2026.111784

Naiyi Lei , Jiaqing Qin , Shaolei Long , Che Zhang , Shengfeng Zhou , Zhentao Yu , Yanliang Yi

Ti-based high-entropy alloys (HEAs), (Ti_42.5Zr_42.5Nb₁₀Ta₅)_100-xMo_x (x = 0, 5), were developed and evaluated for tribocorrosion, mechanical, and corrosion performance under simulated physiological conditions (PBS and SBF at 37 ℃). Both alloys exhibit a single-phase BCC solid-solution structure, and the addition of 5 at% Mo increases the yield strength from 703 ± 14.5 MPa to 925 ± 6.4 MPa while maintaining high ductility. Both alloys show excellent corrosion resistance, which is attributed to the formation of multi-component passive films composed of TiO₂, ZrO₂, Nb₂O₅/ NbO₂, and Ta₂O₅; Mo addition introduces MoO₂ into the passive film, modifying its electrochemical behavior and repassivation capability. Despite slightly higher friction coefficients, the HEAs exhibit significantly lower wear rates than TC4 alloy in both PBS and SBF. Material degradation is governed by a strong tribocorrosion synergy involving wear-induced depassivation and corrosion-assisted material removal. Mo alloying suppresses subsurface cracking and reduces material loss by enhancing mechanical strength and repassivation efficiency. Overall, the superior tribocorrosion performance of TiZrNbTaMo HEAs arises from the coupled effects of microstructural strengthening and passive film stability, highlighting their potential for wear-sensitive biomedical implant applications.

制备了ti基高熵合金（Ti42.5Zr42.5Nb10Ta5）100-xMox (x = 0,5)，并在模拟生理条件（37℃PBS和SBF）下对其摩擦腐蚀、力学性能和腐蚀性能进行了评价。两种合金均为单相BCC固溶组织，添加5 （% Mo）使屈服强度从703 ± 14.5 MPa提高到925 ± 6.4 MPa，同时保持了较高的塑性。两种合金均表现出优异的耐蚀性，这是由于形成了由TiO2、ZrO2、Nb2O5/ NbO2和Ta2O5组成的多组分钝化膜；Mo的加入将MoO2引入钝化膜，改变了钝化膜的电化学行为和再钝化能力。尽管HEAs在PBS和SBF中的摩擦系数略高，但其磨损率明显低于TC4合金。材料降解是由强烈的摩擦腐蚀协同作用控制的，包括磨损引起的脱钝化和腐蚀辅助的材料去除。钼合金通过提高机械强度和再钝化效率来抑制亚表面开裂和减少材料损失。总体而言，TiZrNbTaMo HEAs优异的摩擦腐蚀性能源于微观结构强化和被动膜稳定性的耦合作用，突出了它们在磨损敏感生物医学植入物应用中的潜力。

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引用次数: 0

Coating materials for journal bearings 轴颈轴承用涂层材料

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-01-31 DOI: 10.1016/j.triboint.2026.111774

Alberto Betti , Andrea Riva , Paola Forte , Steven Chatterton , Enrico Ciulli

Journal bearings are typically lined with thin coatings that enhance tribological properties with respect to the underlying structural material. Traditionally, white metal coatings have been used, but they are currently being replaced to improve environmental sustainability, mechanical and thermal properties, wear resistance, and to reduce friction. This paper reviews recent progress in advanced materials for bearing coatings. After reviewing different materials and their deposition technologies, testing methods for evaluating materials performance are analysed. The results from comparative tests are presented. Furthermore, a unified comparison of tribological properties across different experiments is shown. Then, numerical modelling techniques are discussed. Based on the findings, conclusive recommendations for future bearing coating development are provided.

轴颈轴承通常衬有薄涂层，相对于底层结构材料，可以提高摩擦学性能。传统上，白色金属涂层已被使用，但它们目前正在被取代，以提高环境可持续性，机械和热性能，耐磨性，并减少摩擦。本文综述了近年来先进轴承涂层材料的研究进展。在回顾了不同的材料及其沉积工艺后，分析了评价材料性能的测试方法。给出了对比试验的结果。此外，还显示了不同实验中摩擦学性能的统一比较。然后，讨论了数值模拟技术。在此基础上，对今后轴承涂层的发展提出了结论性建议。

引用次数: 0

Solid particle erosion behavior and failure mechanism of medium-entropy AlCrTiSiN coatings 中熵AlCrTiSiN涂层固相颗粒侵蚀行为及破坏机理

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-01-30 DOI: 10.1016/j.triboint.2026.111775

Y. Hong , S.Q. Huang , W.L. Chen , S.S. Lin , T.W. Fan , Y.Z. Wu , W. Xu , D.Z. Gong , J. Yan , B. Deng

Multi-principal nitride coatings have received growing attention for their significant potential as protective coatings against solid particle erosion. In this study, the solid particle erosion behavior and associated failure mechanisms of medium-entropy AlCrTiSiN coatings and ternary AlCrN coatings were investigated. The results show that AlCrTiSiN coatings exhibit better erosion resistance than AlCrN coatings due to their higher hardness and greater fracture toughness. The outstanding performance of AlCrTiSiN coatings arises not only from the powerful solid solution strengthening effect and elevated surface energy imparted by their multi-principal elements, but also from the unique microstructures generated by the arc ion plating process. AlCrTiSiN coatings are composed of columnar AlCrTiSiN nitrides and spherical metal-droplets. These columnar AlCrTiSiN nitrides are deposited as a nanolayer structure, consisting of CrN phase solid solutions with periodic fluctuations in elemental composition. During erosion, metal-droplets dissipate impact energy through the formation of dense microcracks, rotations of nanocrystallites, and internal plastic deformations. Simultaneously, the nanolayer structure promotes formation of transverse microcracks and deflects long cracks, thus increasing the driving energy consumed by crack propagation.

多主体氮化物涂层因其作为固体颗粒侵蚀防护涂层的巨大潜力而受到越来越多的关注。研究了中熵AlCrTiSiN涂层和三元AlCrN涂层的固相颗粒侵蚀行为及其破坏机制。结果表明，AlCrTiSiN涂层具有较高的硬度和断裂韧性，比AlCrN涂层具有更好的抗冲蚀性能。AlCrTiSiN涂层的优异性能不仅源于其多主元素所赋予的强大的固溶体强化效果和表面能的提高，还源于电弧离子镀工艺所产生的独特的微观结构。AlCrTiSiN涂层由柱状AlCrTiSiN氮化物和球形金属液滴组成。这些柱状AlCrTiSiN氮化物以纳米层结构沉积，由元素组成周期性波动的CrN相固溶体组成。在侵蚀过程中，金属液滴通过致密微裂纹的形成、纳米晶的旋转和内部塑性变形来耗散冲击能量。同时，纳米层结构促进横向微裂纹的形成和长裂纹的偏转，从而增加裂纹扩展所消耗的驱动能量。

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引用次数: 0

Modelling and analysis of non-contacting mechanical face seals with axial disturbances and misalignment 具有轴向扰动和不对准的非接触式机械密封的建模与分析

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-01-29 DOI: 10.1016/j.triboint.2026.111761

Ben S. Ashby , Tristan Pryer , Nicola Y. Bailey

Advancements in industrial applications are driving developments in non-contacting mechanical seal technology. Key requirements include improvements in efficiency and reliability, which lead to smaller clearances, lower frictional losses, and minimisation of wear, during operation. However, a critical consideration is the effect of external disturbances experience by the seal from the local environment which may cause destabilisation, and lead to premature failures through unanticipated face contact.

This work examines the dynamic behaviour of a non-contacting mechanical face seals, where a thin fluid film separates a pair of coaxial discs; a rotor (rotating face) and stator (stationary face). It is assumed that the rotor–stator have an angular misalignment and operation is under conditions involving large axial disturbances, representing external disturbances. A fully coupled unsteady mathematical representation is developed, where the fluid flow is coupled to the structural response of the stator, and the rotor motion is prescribed. The stator is modelled as a spring–mass–damper system, and the fluid film model is based on a lubrication approximation of the Navier–Stokes equations. The governing equations are solved via a numerical technique based on finite element and Runge–Kutta methods.

A parameter study reveals the impact of misalignment on the seal dynamics, when experiencing an external disturbance. The angle of misalignment and corresponding amplitude of forcing can be identified when the minimum fluid film thickness becomes less than a given tolerance. This provides insights into safe operating conditions and manufacturing tolerances, with the research aiding to improve the design critera and reliability of non-contacting mechanical face seals.

工业应用的进步推动了非接触式机械密封技术的发展。关键要求包括提高效率和可靠性，从而实现更小的间隙，更低的摩擦损失，并在运行过程中最大限度地减少磨损。然而，一个关键的考虑因素是来自当地环境的外部干扰对密封的影响，这些干扰可能会导致不稳定，并通过意想不到的表面接触导致过早失效。这项工作检查了非接触式机械面密封的动态行为，其中薄流体膜分离一对同轴盘；有转子（旋转面）和定子（静止面）。假设转子-定子存在角不对中，并且运行在有较大轴向扰动的条件下，轴向扰动代表外部扰动。建立了一种完全耦合的非定常数学表示，其中流体流动与定子的结构响应耦合，转子运动是规定的。定子被建模为弹簧-质量-阻尼系统，流体膜模型是基于Navier-Stokes方程的润滑近似。采用基于有限元和龙格-库塔法的数值方法求解控制方程。参数研究表明，当遇到外部干扰时，不对准对密封动力学的影响。当最小液膜厚度小于给定公差时，可以确定不对准角和相应的强迫幅度。这提供了对安全操作条件和制造公差的见解，研究有助于提高非接触式机械密封的设计标准和可靠性。

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引用次数: 0

Modeling with experimental validation of power loss in high-speed rolling bearings with oil-jet lubrication for helicopter transmission systems 直升机传动系统油喷射润滑高速滚动轴承功率损失建模与实验验证

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-01-27 DOI: 10.1016/j.triboint.2026.111762

Pengfei Zhou, Jie Ling, Ruifeng Zhao

Targeting the critical need for efficiency and thermal management in helicopter transmission systems, this study focuses on the power loss of high-speed rolling bearings under oil-jet lubrication — a dominant lubrication method in such systems. To address this issue, this paper establishes a localized mathematical model for predicting the power loss of rolling bearings under oil-jet lubrication. The model’s completeness is enhanced by incorporating two key mechanisms: the dynamic load effect on rolling elements at high speeds and the oil shear drag loss at the bearing inlet interface. Based on this model, the power losses of several typical bearing types under identical operating conditions with low radial load are calculated. To validate the model, a dedicated test rig was built to conduct oil-jet lubrication experiments under the same low-load condition. Although this specific loading condition imposes certain limitations on the model’s applicability, the experimental results can still be used for model verification. The results show that the theoretical predictions agree well with the experimental data in overall trend. Further analysis reveals the variation patterns of individual loss sources with rotational speed, particularly the contribution proportion of the newly introduced power loss terms, thereby validating the correctness and necessity of the supplemented mechanisms. This study provides a generalized model and a theoretical basis for optimal bearing selection and loss suppression, directly supporting efficiency improvements in helicopter transmissions.

针对直升机传动系统对效率和热管理的迫切需求，研究了高速滚动轴承在油喷射润滑下的功率损失。针对这一问题，本文建立了预测油喷射润滑下滚动轴承功率损失的局部数学模型。考虑了高速动载荷对滚动体的影响和轴承入口界面油剪切阻力损失两个关键机理，提高了模型的完整性。在此基础上，计算了几种典型轴承在低径向载荷的相同工况下的功率损耗。为了验证该模型的有效性，搭建了专用试验台，在相同的低负荷条件下进行了喷油润滑实验。虽然这种特定的加载条件对模型的适用性有一定的限制，但实验结果仍可用于模型验证。结果表明，理论预测在总体趋势上与实验数据吻合较好。进一步分析揭示了各个损耗源随转速的变化规律，特别是新引入的功率损耗项的贡献比例，从而验证了补充机构的正确性和必要性。该研究为优化轴承选择和抑制损耗提供了广义模型和理论基础，直接支持直升机传动效率的提高。

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引用次数: 0

Theoretical and experimental investigation on PCD tool wear in longitudinal-torsional ultrasonic- and laser-assisted milling of 2.5D Cf/SiC composites 超声和激光辅助铣削2.5D Cf/SiC复合材料时PCD刀具磨损的理论和实验研究

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International

Pub Date : 2026-01-27 DOI: 10.1016/j.triboint.2026.111760

Junhao Wang , Xiaoxin Chen , Huapan Xiao , Changjuan Zhang , Xiaoliang Liang

Carbon fiber-reinforced silicon carbide (Cf/SiC) is employed in high-temperature regions due to its excellent thermal stability and lightweight characteristics. However, the inherent brittleness and hardness of Cf/SiC lead to rapid tool wear during conventional machining (CM), significantly compromising machining quality and limiting practical application. In this paper, a longitudinal–torsional ultrasonic- and laser-assisted milling (LTULAM) was employed to suppress tool wear for machining 2.5D Cf/SiC composites. A mathematical model of average flank wear width (VB) was established. The results indicate that the VB model, based on the tool motion trajectory under longitudinal-torsional ultrasonic vibration, classical friction-wear models, and the microhardness of laser-softened material, can effectively capture the actual wear behavior. The error between the experimental and model of VB values ranges from –5 μm to 20 μm, demonstrating a high prediction accuracy. Compared with CM, laser-assisted milling (LAM), and ultrasonic-assisted milling (UAM), the life of polycrystalline diamond (PCD) tools under LTULAM was extended by 90.47 %, 44.15 %, and 46.79 %, respectively. The wear mechanisms of PCD tools include abrasive wear, adhesive behavior, and oxidative wear in LTULAM. The optimal LTUALM parameters are determined to minimizing tool wear. Tool wear decreased with increasing laser power, and it increased with higher feed rate and cutting depth. Tool wear first decreased and then increased with greater ultrasonic amplitude, while it decreased with higher cutting speed. This research provides reliable analytical insights for mitigating tool wear during the LTULAM of 2.5D Cf/SiC composites.

碳纤维增强碳化硅（Cf/SiC）由于其优异的热稳定性和轻质特性而被用于高温地区。然而，Cf/SiC固有的脆性和硬度导致常规加工（CM）过程中刀具的快速磨损，严重影响加工质量并限制了实际应用。采用纵向-扭转超声-激光辅助铣削（LTULAM）加工2.5D Cf/SiC复合材料，以抑制刀具磨损。建立了平均齿面磨损宽度（VB）的数学模型。结果表明，基于超声纵扭振动作用下刀具运动轨迹、经典摩擦磨损模型和激光软化材料显微硬度的VB模型能有效捕捉刀具的实际磨损行为。VB值与实验值的误差在-5 ~ 20 μm之间，具有较高的预测精度。与CM、激光辅助铣削（LAM）和超声辅助铣削（UAM）相比，LTULAM下聚晶金刚石（PCD）刀具的寿命分别延长了90.47 %、44.15 %和46.79 %。PCD刀具的磨损机制包括磨料磨损、粘接行为和LTULAM中的氧化磨损。确定最佳LTUALM参数以最大限度地减少刀具磨损。刀具磨损随激光功率的增大而减小，随进给速率和切削深度的增大而增大。刀具磨损随超声振幅的增大先减小后增大，随切削速度的增大而减小。该研究为2.5D Cf/SiC复合材料LTULAM期间减轻刀具磨损提供了可靠的分析见解。

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引用次数: 0