Tribology International最新文献_第8页

Modelling of single grit micro-cutting of Ti-6Al-4V and In-718 with experimental validation Ti-6Al-4V和In-718单粒度微切削建模及实验验证

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-20 DOI: 10.1016/j.triboint.2025.110661

Gautam Kumar , N.D. Chakladar , Soumitra Paul

{"title":"Modelling of single grit micro-cutting of Ti-6Al-4V and In-718 with experimental validation","authors":"Gautam Kumar , N.D. Chakladar , Soumitra Paul","doi":"10.1016/j.triboint.2025.110661","DOIUrl":"10.1016/j.triboint.2025.110661","url":null,"abstract":"<div><div>In the present study, a single-grit micro-cutting simulation model was developed for Ti-6Al-4V and In-718 work materials when ground with a single cBN grit on the grinding wheel hub. User-defined subroutines were implemented to integrate the phenomenon of dynamic recrystallization and strain gradient effect. Numerical simulations were performed using a pyramidal shaped and CT-scanned actual grit with varying grit orientations. The effect of process parameters and grit orientation on the mechanism of material removal, pile-up ratio, micro-cutting forces, specific micro-cutting energy, and chip morphology was analyzed for Ti-6Al-4V and In-718. The simulated results using CT-scanned grit agreed with experimental values. The average deviation of the pile-up ratio with varying micro-cutting velocity at maximum uncut chip thickness of 10 µm using CT-scanned grit for Ti-6Al-4V was 9.2 %, and for In-718 was 8.1 %. The comparison of the average effect of grit orientation on the peak magnitude of normal and tangential micro-cutting force obtained by numerical simulation at maximum uncut chip thickness of 10 µm and cutting velocity of 30 m/s using CT-scanned grit matched precisely with experimental values with an error of 3.2 % and 2.7 % for Ti-6Al-4V and 2.2 % and 3.8 % for In-718. The error of the simulated results for specific micro-cutting energy was 13.8 % for Ti-6Al-4V and 11.8 % for In-718. The developed modelling algorithm provides a valuable understanding for selecting effective grinding parameters for different alloys, provided the material constitutive parameters are given.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110661"},"PeriodicalIF":6.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687280","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

An investigation into the evolution of surface topography and contact characteristics of rolling elements under repeated rolling contact 研究了反复接触条件下滚动体表面形貌及接触特性的演变规律

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-20 DOI: 10.1016/j.triboint.2025.110644

Mostafa Gargourimotlagh, Dave Matthews, Matthijn de Rooij

引用次数: 0

Enhanced fretting wear resistance of 2A12 aluminium alloys through laser shock peening without coating 无涂层激光冲击强化提高2A12铝合金的微动磨损性能

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-19 DOI: 10.1016/j.triboint.2025.110646

He Gengchao , Guo Weiling , Zhou Longlong , Li Ke , Huang Yanfei , Wang Haidou , Cai Zhenbing , Xing Zhiguo

引用次数: 0

Study on the tribological behavior of Ti-6Al-4V under emulsion lubrication with different oil-water ratio 不同油水比下Ti-6Al-4V乳液润滑摩擦学行为研究

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-19 DOI: 10.1016/j.triboint.2025.110653

Zhao Zhang , Yanyan Yan , Yangyang Ding , Zhankui Wang

引用次数: 0

Letter to the editor regarding wrong nanoindentation measurements in the article by L. Zhang et al. 关于L. Zhang等人文章中错误的纳米压痕测量给编辑的信。

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-19 DOI: 10.1016/j.triboint.2025.110663

Esteban Broitman

引用次数: 0

An investigation of film formation and pressure-viscosity relationship of water-based lubricants in elastohydrodynamic contacts 弹性流体接触中水基润滑剂成膜及压力-粘度关系的研究

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-19 DOI: 10.1016/j.triboint.2025.110654

Mushfiq Hasan , Marcus Björling , Christine Matta , Ralph Meeuwenoord , Ugo Jantel , Roland Larsson

{"title":"An investigation of film formation and pressure-viscosity relationship of water-based lubricants in elastohydrodynamic contacts","authors":"Mushfiq Hasan , Marcus Björling , Christine Matta , Ralph Meeuwenoord , Ugo Jantel , Roland Larsson","doi":"10.1016/j.triboint.2025.110654","DOIUrl":"10.1016/j.triboint.2025.110654","url":null,"abstract":"<div><div>Understanding elastohydrodynamic (EHL) film formation and the pressure-viscosity response of lubricants is necessary for designing rolling/sliding tribological contacts. This article investigates the EHL behaviour of four formulated water-based lubricants (glycerol-water, glycol-water, and ionic liquid-water) and one reference oil under moderately high pressures, typical in gears and bearings applications. A ball-on-disc tribometer with optical interferometry was employed to measure the film thickness of the water-based lubricants. The results highlight the sensitivity of film formation to entrainment speed, slide-to-roll ratio (SRR), temperature, and lubricant composition. Water loss due to evaporation significantly impacts film formation at high temperatures. Additionally, an unusual increase in film thickness was observed for the glycol-water solution, likely due to complex tribological conditions. The limitations of the classical Hamrock-Dowson film thickness equation for water-based lubricants are also discussed. Furthermore, pressure-viscosity coefficients of the water-based lubricants were estimated using both optical interferometry and high-pressure viscometer methods. The effect of water content on the pressure-viscosity coefficient was also examined, revealing that higher water content leads to reduced pressure and temperature dependence of viscosity.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110654"},"PeriodicalIF":6.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gradient distribution of reinforced phases B2 and Ti5Si3 enabling tribocorrosion optimization in titanium alloy 增强相B2和Ti5Si3的梯度分布使钛合金摩擦腐蚀优化

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-19 DOI: 10.1016/j.triboint.2025.110659

Chonghao Sun , Luyuan Li , Haoran Li , Yongnan Chen , Ying Ruan

{"title":"Gradient distribution of reinforced phases B2 and Ti5Si3 enabling tribocorrosion optimization in titanium alloy","authors":"Chonghao Sun , Luyuan Li , Haoran Li , Yongnan Chen , Ying Ruan","doi":"10.1016/j.triboint.2025.110659","DOIUrl":"10.1016/j.triboint.2025.110659","url":null,"abstract":"<div><div>The distribution of Ti<sub>5</sub>Si<sub>3</sub> and B2 phases in the Ti-Al-Mo-Si alloys was controlled via electromagnetic levitation coupled with fall casting (EML-FC) technique. The B2 and Ti<sub>5</sub>Si<sub>3</sub> phases as reinforced phases exhibited improved wear resistance, passivation and repassivation capability compared to other constituent phases in the alloy. The volume fraction of these two phases in the Ti<sub>50</sub>Al<sub>42</sub>Mo<sub>4</sub>Si<sub>4</sub> alloy was higher than that in the Ti<sub>50</sub>Al<sub>46</sub>Mo<sub>2</sub>Si<sub>2</sub> alloy owing to the increase of Mo and Si content. The distribution of these two phases can be further controlled by the EML-FC process to form the gradient distribution with increasing volume fraction from edge to center in alloys. This facilitated the rapid formation of a dense passivation film and caused the gradient corrosion behavior of the alloys to effectively prevent the entire alloy from being corroded. The denser passivation film on the surface of Ti<sub>50</sub>Al<sub>42</sub>Mo<sub>4</sub>Si<sub>4</sub> alloy by EML-FC mixed with wear debris and formed a friction film on the alloy surface to provide more effective protection and lubrication for the matrix during tribocorrosion. Moreover, the gradient distribution with the higher volume fraction of B2 and Ti<sub>5</sub>Si<sub>3</sub> phases in the Ti<sub>50</sub>Al<sub>42</sub>Mo<sub>4</sub>Si<sub>4</sub> alloy significantly restrained pulling out of the alloy matrix, caused Ti<sub>5</sub>Si<sub>3</sub> and B2 phases to be oxidized to reduce wear on the matrix and effectively enhanced repassivation ability under tribocorrosion condition. Consequently, the corrosion and tribocorrosion resistances of the Ti-Al-Mo-Si alloys were improved.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110659"},"PeriodicalIF":6.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687275","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

Runner-ice friction models for winter olympic bobsleigh 冬奥会雪橇的滑冰摩擦模型

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-18 DOI: 10.1016/j.triboint.2025.110650

Xiangle Kong , Deping Wang , Xiaoyu Zhou , Jianxiang Zhang , Xuan Niu , Yongfeng Jiang , Minghui Bai , Lun Li , Jun Li , Jianfeng Wang , Weihua Li

引用次数: 0

Microstructure and wear behavior of Mn-modified high-strength AlCu alloy fabricated via laser powder bed fusion 激光粉末床熔敷制备mn改性高强度AlCu合金的组织与磨损行为

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-18 DOI: 10.1016/j.triboint.2025.110660

Zehao Qin , Nan Kang , Ruidi Li , Wenling Zhang , Mohamed El Mansori

{"title":"Microstructure and wear behavior of Mn-modified high-strength AlCu alloy fabricated via laser powder bed fusion","authors":"Zehao Qin , Nan Kang , Ruidi Li , Wenling Zhang , Mohamed El Mansori","doi":"10.1016/j.triboint.2025.110660","DOIUrl":"10.1016/j.triboint.2025.110660","url":null,"abstract":"<div><div>In this work, a new Mn-modified Al<img>Cu<img>Mg<img>Si<img>Ti alloy with a high relative density of 99.5 % was processed via laser powder bed fusion (LPBF) technology. The influence of Mn addition on the solidification microstructure was investigated through multiscale characterization methods, and the wear behavior of the modified alloy was evaluated via a ball-on-flat tribometer against 100Cr6 steel under three different loads (2.1 N, 10 N, and 24 N). The results demonstrate that the formation of bimode columnar<img>equiaxed grains is attributed to the addition of Ti with nanosized Al<sub>3</sub>Ti particles, whereas Mn is oversaturated and solid-solved within the matrix, with no significant Mn precipitation observed. This oversaturation increases the distortion of the Al matrix, improving the strain hardening capability and oxidation resistance of the material. As a result, the wear rates after Mn modification were reduced by 78.4 %, 66.7 %, and 56.8 % under 2.1 N, 10 N, and 24 N loads, respectively, compared with those of the LPBF Al<img>Cu<img>Mg<img>Si<img>Ti alloy.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110660"},"PeriodicalIF":6.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomic-scale insights into the mechanical and tribological properties of graphullerene 石墨烯的机械和摩擦学性能的原子尺度的见解

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-18 DOI: 10.1016/j.triboint.2025.110656

Feng Qiu, Hui Song, Zhiquan Yang, Mingliang Jiang, Xianguo Hu

{"title":"Atomic-scale insights into the mechanical and tribological properties of graphullerene","authors":"Feng Qiu, Hui Song, Zhiquan Yang, Mingliang Jiang, Xianguo Hu","doi":"10.1016/j.triboint.2025.110656","DOIUrl":"10.1016/j.triboint.2025.110656","url":null,"abstract":"<div><div>Graphullerene (GF) as an emerging two-dimensional nanomaterial exhibits excellent flexibility properties and superlubricity potential, but current research on its mechanical and tribological properties still lacks in-depth insights from the microscopic scale. Herein, the mechanical strength of GF was explored and its tribological mechanisms as a lubricant additive in fluid and boundary lubrication states were revealed by indentation, tensile, and friction molecular dynamics simulations using graphene (GR) as a comparative object. The results revealed that compared with GR, covalent bond mixed hybridization reduced the mechanical strength of GF, but the robust spherical structure enhanced its bending stiffness. Under fluid lubrication, GR promoted adsorption film formation and rapid flow to induce low-shear strength solid-liquid interfacial slip. GF inhibited this characteristic and thus induced liquid-liquid interlayer slip with high frictional resistance. Under boundary lubrication, GR exhibited superior tribological performance compared to GF, with the bilayer outperforming the monolayer. This was attributed to the high bending stiffness of GF inhibiting the bending deformation releasing stresses and thus deteriorating the mechanical contact with the asperity. However, friction-induced interlayer slip of bilayer nanoparticles with low shear strength. This study provides valuable insights into the mechanical and tribological properties of GF.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110656"},"PeriodicalIF":6.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687089","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