Wear最新文献_第5页

Mapping of friction, wear and particle emissions from high-speed train brakes

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-11 DOI: 10.1016/j.wear.2025.206027

Yezhe Lyu , Qixiang Zhang , Leonie Tanzeglock , Minghui Tu , Jiliang Mo , Tomoaki Okuda , Joakim Pagels , Jens Wahlström

引用次数: 0

Effects of torque adjustment rates and increments on wheel-rail adhesion instability behavior under various speed and axle load conditions

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-11 DOI: 10.1016/j.wear.2025.206026

Xinxin Song , Wenjian Wang , Shuyue Zhang , Jun Guo , Xin Zhao , Hongfeng Qi , Haohao Ding , Zhongrong Zhou

{"title":"Effects of torque adjustment rates and increments on wheel-rail adhesion instability behavior under various speed and axle load conditions","authors":"Xinxin Song , Wenjian Wang , Shuyue Zhang , Jun Guo , Xin Zhao , Hongfeng Qi , Haohao Ding , Zhongrong Zhou","doi":"10.1016/j.wear.2025.206026","DOIUrl":"10.1016/j.wear.2025.206026","url":null,"abstract":"<div><div>During the locomotive traction process, if the tangential force exceeds the maximum adhesion force of the wheel-rail interface, wheel-rail adhesion instability occurs, leading to accelerated damage to the contact surface due to severe wear. Therefore, it is important to study the dynamic behavior of wheel-rail adhesion instability to improve the safety and stability of the train operations. A novel wheel-rail rolling contact experiment machine based on torque control was designed and established to investigate the wheel-rail adhesion instability behavior. The results show that: As the torque of the loading motor increased, the slip ratio initially increased steadily, then rapidly rose and fluctuated. With the decrease in torque adjustment rate, the fluctuation of the slip ratio decreased. Meanwhile, the torque increments had an impact on adhesion instability behavior. When the torque increment was less than 0.6 Nm, with the increase in torque increment, the slip ratio initially increased and then decreased, while the wheel-rail adhesion coefficient increased. However, when the torque increment exceeded 0.6 Nm, as the torque increment increased, the maximum slip ratio remained constant, while the adhesion coefficient decreased, leading to the slippage of the wheel-rail roller. In addition, with the axle loads and rotational speeds increased, the maximum slip ratio and adhesion coefficient decreased. Also, the function relationship between the slip ratio and the torque increment after the critical point (adhesion force saturation point) was proposed, which can provide guidance for vehicles to adjust the adhesion coefficient.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206026"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644141","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

Effects of intermittent airflow on rolling contact damage characteristics of wheel steels in a low-temperature environment: Airflow humidity

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-11 DOI: 10.1016/j.wear.2025.206025

Zhixiong Bai , Jinbo Zhou , Yanwen Lin , Jiaqiang Li , Chunying Ma , Mingxue Shen

{"title":"Effects of intermittent airflow on rolling contact damage characteristics of wheel steels in a low-temperature environment: Airflow humidity","authors":"Zhixiong Bai , Jinbo Zhou , Yanwen Lin , Jiaqiang Li , Chunying Ma , Mingxue Shen","doi":"10.1016/j.wear.2025.206025","DOIUrl":"10.1016/j.wear.2025.206025","url":null,"abstract":"<div><div>In cold regions, warm and humid airflow is easily generated in tunnels with geothermal heat. As trains travel through these tunnels, sudden fluctuations in airflow conditions, temperature and humidity easily cause premature contact damage to the wheel surface. Therefore, the investigation of rolling contact damage behaviour of wheel steels under intermittent airflow could provide support for the stable operation of wheel-rail systems under such extreme service conditions. In this paper, the effects of intermittent airflow with different humidity on the damage characteristics of wheels in a low-temperature environment were investigated using a wheel-rail rolling contact tester. The results showed that the introduction of intermittent airflow mitigated wear but accelerated fatigue cracking during the rolling contact process. With the airflow humidity increased from RH = 5 % to RH = 90 %, the wear mechanism of wheel steels experienced delamination wear, adhesive-oxidative-abrasive wear and delamination-fatigue wear. At low airflow humidity, the increased proportion of small-angle grain boundaries, improved fine grain strengthening and dislocation strengthening provided mechanical support for contact damage resistance. When the humidity of the airflow was moderate, the work-hardening and contact damage at the contact interfaces were weakened, with surface oxidation occurring. Conversely, high-humidity airflow accelerated crack extension on the damaged surface. Additionally, the wheel-rail interface may experience low adhesion when exposed to warm and humid airflow. In summary, reducing humidity in the tunnels is beneficial for mitigating contact damage and extending service life.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206025"},"PeriodicalIF":5.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620897","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

Friction reduction mechanism on the grinding interface during nanofluid minimum quantity lubrication grinding FRP 纳米流体最小量润滑磨削玻璃钢过程中磨削界面的减摩机制

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-10 DOI: 10.1016/j.wear.2025.206021

Bingyu Zhao , Ben Wang , Qi Zhang , Chang Song , Hongdi Chu , Honggang Yin

{"title":"Friction reduction mechanism on the grinding interface during nanofluid minimum quantity lubrication grinding FRP","authors":"Bingyu Zhao , Ben Wang , Qi Zhang , Chang Song , Hongdi Chu , Honggang Yin","doi":"10.1016/j.wear.2025.206021","DOIUrl":"10.1016/j.wear.2025.206021","url":null,"abstract":"<div><div>Fiber-reinforced resin matrix composites (FRP) are highly abrasive, and there is strong friction between the fibers and the abrasive grain during the grinding process. Nanofluid minimum quantity lubrication (NMQL) is an excellent lubrication technology that can significantly reduce the friction force. To investigate the lubrication performance of different nanoparticles, this study analyzed the friction reduction mechanism of tubular, layered, hexahedral, and spherical nanoparticles on the grinding interface based on tribological theory. Secondly, CNTs, MoS<sub>2</sub>, SiC, CuO, and Al<sub>2</sub>O<sub>3</sub> were selected to represent tubular, laminar, hexahedral, and spherical nanoparticles for grinding experiments to verify the validity of this mechanism. The results showed that the grinding forces F<sub>n</sub>, F<sub>t</sub>, and F<sub>r</sub> were reduced by 86.7 %, 68.9 %, and 81.2 %, respectively, in the NMQL-Al<sub>2</sub>O<sub>3</sub> condition compared to the dry grinding condition. The micro morphology of the grinding surface showed that the fiber damage was the lowest under the NMQL-Al<sub>2</sub>O<sub>3</sub> condition. Sa, Sz, and Sq were reduced by 62.9 %, 50.5 %, and 57.8 % under NMQL-Al<sub>2</sub>O<sub>3</sub> compared to dry grinding conditions. These results show that high-hardness spherical nanoparticles (Al<sub>2</sub>O<sub>3</sub>) are beneficial in reducing the friction, have better lubrication performance, and can significantly reduce fiber wear during the FRP grinding process.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206021"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687034","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

Improvement of wear scar volume estimation in reciprocating motion

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-10 DOI: 10.1016/j.wear.2025.206023

Pawlus Pawel , Reizer Rafal

引用次数: 0

Effect of pores on the performance of diamond grinding wheels fabricated by laser additive manufacturing

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-10 DOI: 10.1016/j.wear.2025.206019

Shichun Li , Min Ou , Wenjing Cai , Junzhe Li , Quanhai Xiao , Mengcen Zou

{"title":"Effect of pores on the performance of diamond grinding wheels fabricated by laser additive manufacturing","authors":"Shichun Li , Min Ou , Wenjing Cai , Junzhe Li , Quanhai Xiao , Mengcen Zou","doi":"10.1016/j.wear.2025.206019","DOIUrl":"10.1016/j.wear.2025.206019","url":null,"abstract":"<div><div>When using laser additive manufacturing to fabricate multi-layer abrasive diamond wheels, the pores within the abrasive segments are favorable factors for grinding performance, which should be reasonably designed and utilized. In this paper, laser additive technology is employed to fabricate grinding wheel abrasive segments. The pore characteristics of these segments are examined and quantitatively analyzed, followed by tests on their mechanical and grinding properties. Ultimately, the study explores and elucidates the relationship between pore characteristics and the mechanical and wear properties of the abrasive segments. Based on these findings, optimization recommendations for the pore structure of the grinding wheels are provided. The results indicate that the porosity of the fabricated abrasive segments ranges from 18 % to 27 %, with the pore equivalent diameter predominantly between 500 μm and 700 μm. The pore shapes are primarily rod and discoid, and the sphericity of the pores is mainly distributed between 0.3 and 0.65. When the porosity is less than 24.4 %, the abrasive segments exhibit higher elastic modulus and tensile strength. As the pore minimum equivalent diameter increases, the elastic modulus decreases. Conversely, an increase in the proportion of spherical pores contributes to an enhancement in tensile strength. Higher porosity, larger pore dimensions, and a greater proportion of spherical pores lead to increased wear and fragmentation of the diamonds, worsening wear morphology, and elevated temperatures during the grinding process. Consequently, it is recommended that the design of pore structures incorporate a balance of moderate porosity, smaller pore sizes, and a variety of pore shapes to optimize the comprehensive performance of the abrasive segments.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206019"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641718","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

Unexpected decreased material removal rate in copper chemical mechanical polishing due to reduced electrostatic attraction caused by dicarboxylic acid

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-10 DOI: 10.1016/j.wear.2025.206022

Liang Jiang , Wenhui Li , Xia Zhong, Rui Lei, Yushan Chen, Xin Li, Linmao Qian

{"title":"Unexpected decreased material removal rate in copper chemical mechanical polishing due to reduced electrostatic attraction caused by dicarboxylic acid","authors":"Liang Jiang , Wenhui Li , Xia Zhong, Rui Lei, Yushan Chen, Xin Li, Linmao Qian","doi":"10.1016/j.wear.2025.206022","DOIUrl":"10.1016/j.wear.2025.206022","url":null,"abstract":"<div><div>Electrostatic force, as a part of the interaction between the abrasive particles and the wafer surface, influences chemical mechanical polishing (CMP). However, current studies lack relevant mechanisms, restricting the advancement of copper CMP. This study investigated the role of the electrostatic force in copper CMP via choosing complexing agents to tune the electrostatic force besides their complexation effect. The results reveal that at acidic pH and with a low concentration of H<sub>2</sub>O<sub>2</sub>, the material removal rate (MRR) of copper decreases unexpectedly after adding dicarboxylic acids. The decrement is as high as 75 % after adding 1 mM adipic acid. For the mechanism, copper CMP is a nanoscale corrosive wear process. Wear is influenced by interfacial interaction. After adding adipic acid, its anions can be adsorbed, neutralizing the surface potential of cuprous oxide. Therefore, the electrostatic attraction between the silica abrasive particles and the copper surface, which is the major part of the adhesion force, decreases. Accordingly, the wear effect is weakened, and the MRR decreases. Additionally, zwitterions of amino acids do not alter the surface potentials but enhance the corrosion, and thus the MRR increases. Zwitterionic amino acids are recommended. This study provides insights into material removal in copper CMP.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206022"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687033","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

Towards understanding the influencing mechanism of barrel finishing on tooth surface integrity and contact performance

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-10 DOI: 10.1016/j.wear.2025.206020

Xin Li , Wen Shao , Jinyuan Tang , Jiling Chen , Jiuyue Zhao

{"title":"Towards understanding the influencing mechanism of barrel finishing on tooth surface integrity and contact performance","authors":"Xin Li , Wen Shao , Jinyuan Tang , Jiling Chen , Jiuyue Zhao","doi":"10.1016/j.wear.2025.206020","DOIUrl":"10.1016/j.wear.2025.206020","url":null,"abstract":"<div><div>Higher load-bearing capacity, fatigue performance, and efficiency place greater demands on the surface integrity of gears. Barrel finishing technology can comprehensively improve the surface integrity parameters such as surface microtopography, residual stress, and hardness gradient, and is widely used in the processing of high-performance components in the precision manufacturing field. In this study, the gear barrel finishing process was simulated using EDEM discrete element software to explore material removal amounts of tooth surface. Barrel finishing tests were conducted on spur gears under different process parameters to analyzes the evolution patterns of surface integrity parameters. A comprehensive analysis model for the contact surface of gear barrel finishing, incorporating solid, liquid, and thermal multi-physics field coupling was established. The lubrication characteristics of the polished surfaces obtained at various processing times were analyzed, including oil film pressure, thickness and temperature rise. The research indicates that increasing the gear rotational speed can enhance the finishing effect on the tooth surface. The choice of abrasive significantly impacts the barrel finishing effect at various positions on the tooth surface, with suitable abrasives improving the uniformity of the surface finishing. Barrel finishing reduces surface roughness and increases compressive residual stress and microhardness near the surface, effectively enhancing lubrication properties and contact fatigue performance. The effects of gear barrel finishing process were evaluated from multiple dimensions, including processing simulation, barrel finishing tests, and performance assessment. The proposed method can provide practical guidance and data support for improving the quality and efficiency of gear surface barrel finishing.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206020"},"PeriodicalIF":5.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628558","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 bulk post processing techniques on anisotropy of microstructural and tribological properties of L-DED produced Ti64 alloy 批量后处理技术对 L-DED 生产的 Ti64 合金微观结构和摩擦学特性各向异性的影响

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-07 DOI: 10.1016/j.wear.2025.206014

Sanju Suresh , Jino Joshy , Basil Kuriachen , Ravi Chandan Gurugubelli , Vikash Kumar , Srikanth Bontha

{"title":"Influence of bulk post processing techniques on anisotropy of microstructural and tribological properties of L-DED produced Ti64 alloy","authors":"Sanju Suresh , Jino Joshy , Basil Kuriachen , Ravi Chandan Gurugubelli , Vikash Kumar , Srikanth Bontha","doi":"10.1016/j.wear.2025.206014","DOIUrl":"10.1016/j.wear.2025.206014","url":null,"abstract":"<div><div>Laser-Direct Energy Deposited (L-DED) Ti64 alloy is known to have high anisotropy, and low wear resistance which reduce the longevity of artificial bone joints. Thus, the primary objective of this study is to compare and contrast the effect of bulk treatments to mitigate these inherent limitations. Keeping printing parameters constant, the printed samples were put through different post-treatments, namely, super-β annealing (1050 °C, 1 h) and deep cryogenic dipping (−196 °C, 48 h). Electron back scatter diffraction (EBSD) and x-ray diffraction (XRD) analysis revealed differences in grain morphology and phase distributions in the treated samples. A linear reciprocating wear test is conducted with Al<sub>2</sub>O<sub>3</sub> as the counter body to mimic the artificial hip socket. The super-β annealing process reduced the anisotropy in wear rate from 76 % to 60 % but did not show an overall betterment. On the other hand, the cryo-treatment showed an 83 % reduction in wear and a slight reduction in anisotropy compared to the as-build sample. The coefficient of friction (COF) plots also displayed an increase for annealed samples (15.4%–31.5 % higher) while showing a major reduction in cryo-treated samples (42.8%–54.7 % reduction).</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 206014"},"PeriodicalIF":5.3,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687026","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

Improvement of Ti3SiC2/SiC composite ceramic friction and wear behavior by mechanical-friction oxidation synergism in a wide temperature domain of SiC

IF 5.3 1区工程技术

Wear Pub Date : 2025-03-06 DOI: 10.1016/j.wear.2025.205984

Chengzhi Du , Haotian Xie , Jiahui Liu , Bo Lei , Rui Zhang

{"title":"Improvement of Ti3SiC2/SiC composite ceramic friction and wear behavior by mechanical-friction oxidation synergism in a wide temperature domain of SiC","authors":"Chengzhi Du , Haotian Xie , Jiahui Liu , Bo Lei , Rui Zhang","doi":"10.1016/j.wear.2025.205984","DOIUrl":"10.1016/j.wear.2025.205984","url":null,"abstract":"<div><div>The wear resistance of materials is a critical factor in prolonging the lifespan of equipment. This study aims to enhance the wear resistance and high-temperature solid lubrication properties of Ti<sub>3</sub>SiC<sub>2</sub> by preparing Ti<sub>3</sub>SiC<sub>2</sub>/SiC composite ceramics with varying SiC content through powder metallurgy techniques. The research investigates the friction and wear behavior of these composites over a broad temperature range, focusing on the role of SiC in the frictional wear process. This analysis includes the establishment of dual variables-temperature and SiC content-as well as an examination of wear micromorphology, composition, and structure. The results indicate that the tribological properties of Ti<sub>3</sub>SiC<sub>2</sub>/SiC composite ceramics improve with increasing temperature and SiC content. The high wear resistance of these composites is attributed to the synergistic effects of oxidation, the formation of an oxide layer, and the mechanical properties of the matrix, rendering them suitable for superior solid lubrication applications.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"572 ","pages":"Article 205984"},"PeriodicalIF":5.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601158","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