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Enhancement of mechanical and tribological performance of Ti–6Al–4V alloy by laser surface alloying with Inconel 625 and SiC precursor materials 通过激光表面合金化铬镍铁合金 625 和碳化硅前驱体材料提高 Ti-6Al-4V 合金的机械和摩擦学性能
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-024-0878-3
Hao-Ran Cheng, Ki-Hoon Shin, Hong Seok Kim
{"title":"Enhancement of mechanical and tribological performance of Ti–6Al–4V alloy by laser surface alloying with Inconel 625 and SiC precursor materials","authors":"Hao-Ran Cheng, Ki-Hoon Shin, Hong Seok Kim","doi":"10.1007/s40544-024-0878-3","DOIUrl":"https://doi.org/10.1007/s40544-024-0878-3","url":null,"abstract":"<p>This study focused on producing metal matrix composite (MMC) coatings on Ti–6Al–4V alloy through laser surface alloying using a novel combination of Inconel 625 and SiC precursor materials. Various ratios of alloying powders were examined to evaluate surface properties such as microhardness, wear resistance, and friction coefficient, along with analyzing the phase composition and microstructure of the coatings. The <i>in situ</i> synthesized MMC coatings exhibited the presence of α-Ti, NiTi, NiTi<sub>2</sub>, and TiC phases. Additionally, Ti<sub>5</sub>Si<sub>3</sub> and α-Ti/Ti<sub>5</sub>Si<sub>3</sub> eutectic structures were observed when the SiC content exceeded 20%. In comparison to the titanium substrate, the MMC coating significantly enhanced microhardness by over threefold and reduced wear by 95%. However, it was crucial to carefully select the appropriate combination of alloying powders to avoid a substantial decrease in friction performance and excessive formation of cracks. Through a comparative analysis of experimental results, the optimal precursor material composition was identified as 85% Inconel 625 and 15% SiC. This study demonstrated the effective utilization of Inconel 625 and SiC alloying materials to enhance the surface properties of titanium alloys, thereby expanding their application in challenging environments.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"64 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584350","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 direct superlubricity and superlow wear via amino modification of polyhydroxy alcohol solutions 通过对聚羟基乙醇溶液进行氨基改性,实现直接超润滑和超低磨损
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-023-0848-1
Qiang Ma, Chengpeng Yan, Rui Yan, Xin Xu, Haifeng Wang
{"title":"Towards direct superlubricity and superlow wear via amino modification of polyhydroxy alcohol solutions","authors":"Qiang Ma, Chengpeng Yan, Rui Yan, Xin Xu, Haifeng Wang","doi":"10.1007/s40544-023-0848-1","DOIUrl":"https://doi.org/10.1007/s40544-023-0848-1","url":null,"abstract":"<p>Friction remains as the primary mode of energy dissipation and components wear, and achieving superlubricity shows high promise in energy conservation and lifetime wear protection. The results in this work demonstrate that direct superlubricity combined with superlow wear can be realized for steel/Si<sub>3</sub>N<sub>4</sub> contacts on engineering scale when polyhydroxy alcohol solution was selectively modified by amino group. Macroscopic direct superlubricity occurs because 3-amino-1,2-propanediol molecules at the friction interface could be induced to rotate and adsorb vertically on the friction surface, forming <i>in-situ</i> thick and dense molecular films to passivate the asperity contacts. Furthermore, amino modification is also conducive to improving the lubrication state from boundary to mixed lubrication regime by strengthening the intermolecular hydrogen bonding interaction, presenting enhanced load-bearing capability and reduced direct solid asperity contacts. Thus, direct superlow average friction of 0.01 combined with superlow wear are achieved simultaneously. The design principle of direct superlubricity and superlow wear in this work indeed offers an effective strategy to fundamentally improve energy efficiency and provide lifetime wear protection for moving mechanical assemblies.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"20 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584351","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
Progress on mechanical and tribological characterization of 2D materials by AFM force spectroscopy 利用原子力显微镜力谱对二维材料进行机械和摩擦学表征的研究进展
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-10 DOI: 10.1007/s40544-024-0864-9
Shuai Wu, Jie Gu, Ruiteng Li, Yuening Tang, Lingxiao Gao, Cuihua An, Qibo Deng, Libin Zhao, Ning Hu
{"title":"Progress on mechanical and tribological characterization of 2D materials by AFM force spectroscopy","authors":"Shuai Wu, Jie Gu, Ruiteng Li, Yuening Tang, Lingxiao Gao, Cuihua An, Qibo Deng, Libin Zhao, Ning Hu","doi":"10.1007/s40544-024-0864-9","DOIUrl":"https://doi.org/10.1007/s40544-024-0864-9","url":null,"abstract":"<p>Two-dimensional (2D) materials are potential candidates for electronic devices due to their unique structures and exceptional physical properties, making them a focal point in nanotechnology research. Accurate assessment of the mechanical and tribological properties of 2D materials is imperative to fully exploit their potential across diverse applications. However, their nanoscale thickness and planar nature pose significant challenges in testing and characterizing their mechanical properties. Among the <i>in situ</i> characterization techniques, atomic force microscopy (AFM) has gained widespread applications in exploring the mechanical behaviour of nanomaterials, because of the easy measurement capability of nano force and displacement from the AFM tips. Specifically, AFM-based force spectroscopy is a common approach for studying the mechanical and tribological properties of 2D materials. This review comprehensively details the methods based on normal force spectroscopy, which are utilized to test and characterize the elastic and fracture properties, adhesion, and fatigue of 2D materials. Additionally, the methods using lateral force spectroscopy can characterize the interfacial properties of 2D materials, including surface friction of 2D materials, shear behaviour of interlayers as well as nanoflake-substrate interfaces. The influence of various factors, such as testing methods, external environments, and the properties of test samples, on the measured mechanical properties is also addressed. In the end, the current challenges and issues in AFM-based measurements of mechanical and tribological properties of 2D materials are discussed, which identifies the trend in the combination of multiple methods concerning the future development of the <i>in situ</i> testing techniques.</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"74 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566309","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 preparation and fretting behavior of bonded oriented MoS2 solid lubricant coating 键合定向 MoS2 固体润滑涂层的制备和摩擦行为研究
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-06 DOI: 10.1007/s40544-024-0895-2
Liangliang Xiong, Mengxue Wu, Xiaoqiang Fan, Minhao Zhu
{"title":"Study on the preparation and fretting behavior of bonded oriented MoS2 solid lubricant coating","authors":"Liangliang Xiong, Mengxue Wu, Xiaoqiang Fan, Minhao Zhu","doi":"10.1007/s40544-024-0895-2","DOIUrl":"https://doi.org/10.1007/s40544-024-0895-2","url":null,"abstract":"<p>The bonded MoS<sub>2</sub> solid lubricant coating is an effective measure to mitigate the fretting wear of AISI 1045 steel. In this work, the amino functionalized MoS<sub>2</sub> was protonated with acetic acid to make the MoS<sub>2</sub> positively charged. The directional arrangement of protonated MoS<sub>2</sub> in the coating was achieved by electrophoretic deposition under the electric field force. The bonded directionally aligned MoS<sub>2</sub> solid lubricant coating showed high adaptability to various loads and excellent lubrication performance under all three working conditions. At a load of 10 N, the friction coefficient and wear volume of the coating with 5 wt% protonated MoS<sub>2</sub> decreased by 20.0% and 37.2% compared to the pure epoxy coating, respectively, and by 0.07% and 16.8% than the randomly arranged MoS<sub>2</sub> sample, respectively. The remarkable lubricating properties of MoS<sub>2</sub> with directional alignment were attributed to its effective load-bearing and mechanical support, barrier effect on longitudinal extension of cracks, and the formation of a continuous and uniform transfer film.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"57 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553469","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 between a single platelet and fibrinogen 单个血小板与纤维蛋白原之间的摩擦力
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-06 DOI: 10.1007/s40544-024-0886-3
Yuhe Wang, Yan Li, Shuguang Zhang, Haosheng Chen, Yongjian Li
{"title":"Friction between a single platelet and fibrinogen","authors":"Yuhe Wang, Yan Li, Shuguang Zhang, Haosheng Chen, Yongjian Li","doi":"10.1007/s40544-024-0886-3","DOIUrl":"https://doi.org/10.1007/s40544-024-0886-3","url":null,"abstract":"<p>Friction has been considered to mediate physiological activities of cells, however, the biological friction between a single cell and its ligand-bound surface has not been thoroughly explored. Herein, we established a friction model for single cells based on an atomic force microscopy (AFM) combined with an inverted fluorescence microscopy (IFM) to study the friction between a highly sensitive platelet and fibrinogen-coated surface. The study revealed that the friction between the platelet and fibrinogen-coated tip is mainly influenced by specific ligand–receptor interaction. Further, we modeled the biological friction, which consists of specific interaction, non-specific interaction, and mechanical effect. Besides, the results suggested that the velocity can also affect specific ligand–receptor interactions, resulting in the friction change and platelet adhesion to fibrinogen surfaces. The study built a friction model between a single cell and its ligand-bound surface and provided a potential method to study the biological friction by the combination of AFM and IFM.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"8 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553465","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
The effect of ethanol fuel dilution on oil performance and MoDTC tribofilms formation and composition 乙醇燃料稀释对机油性能以及 MoDTC 三膜形成和组成的影响
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-05 DOI: 10.1007/s40544-024-0880-9
Juan Ruiz-Acero, Felipe Kessler, Henara Costa, Tiago Cousseau
{"title":"The effect of ethanol fuel dilution on oil performance and MoDTC tribofilms formation and composition","authors":"Juan Ruiz-Acero, Felipe Kessler, Henara Costa, Tiago Cousseau","doi":"10.1007/s40544-024-0880-9","DOIUrl":"https://doi.org/10.1007/s40544-024-0880-9","url":null,"abstract":"<p>Ethanol has emerged as a promising alternative to fossil fuels, but its use can lead to significant dilution in lubricants, particularly during cold start or heavy traffic. This dilution can affect the performance of additives, including friction modifiers like molybdenum dithiocarbamate (MoDTC), which are designed to reduce friction under extreme contact conditions. Prior research suggests that ethanol may impact the performance of MoDTC, prompting this study’s goal to investigate the effects of ethanol on MoDTC tribofilms and their friction response under boundary lubrication conditions. Therefore, reciprocating tribological tests were performed with fully formulated lubricants containing MoDTC with varying ethanol concentrations. The results indicate that a critical ethanol dilution level inhibits friction reduction by MoDTC activation, resulting in friction coefficients (COFs) similar to the base oil. Surfaces tested with simple mixtures of polyalphaolefin (PAO) + MoDTC showed increased COFs with added ethanol. Analysis of tested surfaces using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy near the edge structure (XANES) revealed the presence of sulfates, MoO<sub>3</sub>, MoS<sub>2</sub>, and MoS<sub><i>x</i></sub>O<sub><i>y</i></sub> compounds in the tribofilms formed on the surfaces, with and without ethanol diluted in the lubricant. However, the addition of ethanol increased the sulfates and MoO<sub>3</sub> content of the tribofilms at the expense of friction-reducing compounds such as MoS<sub>2</sub> and MoS<sub><i>x</i></sub>O<sub><i>y</i></sub>. These findings suggest that ethanol dilution in lubricants containing MoDTC creates an oxygen-rich interfacial medium that favors the formation of compounds with insufficient friction-reducing capabilities.</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"21 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141546001","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
Unlocking wear resistance in an ultrastrong dual-phase high-entropy alloy by interface-constrained deformation of brittle Laves phases 通过脆性拉维斯相的界面约束变形,揭示超强双相高熵合金的耐磨性
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-05 DOI: 10.1007/s40544-024-0884-5
Fei Liang, Yixing Sun, Hongyuan Wan, Yong Li, Wenhao Lu, Ao Meng, Lei Gu, Zhaoping Luo, Yan Lin, Yaping Zhang, Xiang Chen
{"title":"Unlocking wear resistance in an ultrastrong dual-phase high-entropy alloy by interface-constrained deformation of brittle Laves phases","authors":"Fei Liang, Yixing Sun, Hongyuan Wan, Yong Li, Wenhao Lu, Ao Meng, Lei Gu, Zhaoping Luo, Yan Lin, Yaping Zhang, Xiang Chen","doi":"10.1007/s40544-024-0884-5","DOIUrl":"https://doi.org/10.1007/s40544-024-0884-5","url":null,"abstract":"<p>The pronounced brittleness of hard Laves phase intermetallics is detrimental to their tribological properties at room temperature. In this study, we utilized a heterogeneous structure to engineer an ultrastrong dual-phase (Laves + B2) AlCoFeNiNb high-entropy alloy that exhibits a low wear rate (3.82×10<sup>−6</sup> mm<sup>3</sup>/(N·m)) at room temperature. This wear resistance in the ball-on-disc sliding friction test with the counterpart of Al<sub>2</sub>O<sub>3</sub> balls stems from the activated deformation ability in the ultrafine Laves lamellae under heterogeneous interface constraints. Furthermore, as tribological stress intensifies, the surface deformation mechanism transitions from dislocation slip on the basal and pyramidal planes to a unique combination of local shear and grain rotation within the Laves phase. Our study illuminates fresh perspectives for mitigating the embrittling effect of Laves phase intermetallics under tribological loading and for the development of wear-resistant materials.</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"55 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141546156","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
Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry 表面粗糙度对升降机行业偏转滑轮-绳索系统中聚合物-聚合物接触摩擦系数的影响
IF 6.8 1区 工程技术
Friction Pub Date : 2024-07-01 DOI: 10.1007/s40544-024-0881-8
Ainhoa Guinea, Andrea Aginagalde, Wilson Tato, Iñigo Llavori, Pablo Garcia, Leire Arraiago, Alaitz Zabala
{"title":"Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry","authors":"Ainhoa Guinea, Andrea Aginagalde, Wilson Tato, Iñigo Llavori, Pablo Garcia, Leire Arraiago, Alaitz Zabala","doi":"10.1007/s40544-024-0881-8","DOIUrl":"https://doi.org/10.1007/s40544-024-0881-8","url":null,"abstract":"<p>The coefficient of friction (CoF) between the deflection pulley and rope in a lift strongly affects the life span of the rope. Although surface roughness is a key factor affecting the metallic pulley–rope CoF, its effect on polymeric pulleys is unknown. The present study analyses the effect of roughness and working conditions on cast polyamide 6 (PA6G) deflection pulley–thermoplastic polyurethane (TPU)-coated rope contacts. The statistical analysis revealed that the effect of surface roughness on the CoF for low-load tests was significant. The present study contributes significantly to parameter selection in deflection pulley machining to minimise friction between the pulley and rope.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"337 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489537","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
Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques 与其他金属成型技术相比,利用熔融长丝制造技术改善 17-4 PH SS 的摩擦腐蚀性能
IF 6.8 1区 工程技术
Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-024-0885-4
Cristina García-Cabezón, Juan Alfonso Naranjo, Celia García-Hernández, Cristina Berges, Gemma Herranz, Fernando Martín-Pedrosa
{"title":"Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques","authors":"Cristina García-Cabezón, Juan Alfonso Naranjo, Celia García-Hernández, Cristina Berges, Gemma Herranz, Fernando Martín-Pedrosa","doi":"10.1007/s40544-024-0885-4","DOIUrl":"https://doi.org/10.1007/s40544-024-0885-4","url":null,"abstract":"<p>Fused filament fabrication (FFF) is one of the additive manufacturing processes which has gained more interest because of its simplicity and low-cost. This technology is similar to the conventional metal injection moulding (MIM) process, consisting of the feedstock preparation of metal powder and polymer binders, followed by layer-by-layer 3D printing (FFF) or injection (MIM) to create green parts and, finally, debinding and sintering. Moreover, both technologies provide near-dense parts. This work presents an in-depth study of the processing method’s influence. The porosity, microstructure, hardness, corrosion, and tribocorrosion behaviour are compared for 17-4 PH SS samples processed from powder by additive manufacturing using FFF and MIM, as well as conventional powder metallurgy (PM) samples. MIM samples exhibited the highest macro and microhardness, while corrosion behaviour was similar for both MIM and FFF samples, but superior in comparison to conventional PM samples. However, the FFF-as fabricated samples displayed a significant improvement in tribocorrosion resistance that could be explained by the higher proportion of delta ferrite and retained austenite in their microstructure.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"18 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462599","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
Subsurface deformation mechanism and the interplay relationship between strength–ductility and fretting wear resistance during fretting of a high-strength titanium alloy 一种高强度钛合金的表面下变形机理以及脆化过程中强度-电导率与脆化耐磨性之间的相互作用关系
IF 6.8 1区 工程技术
Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-024-0870-y
Yanlin Tong, Ke Hua, Haoyang Xie, Yue Cao, Zhuobin Huang, Zhenpeng Liang, Xiaolin Li, Hongxing Wu, Haifeng Wang
{"title":"Subsurface deformation mechanism and the interplay relationship between strength–ductility and fretting wear resistance during fretting of a high-strength titanium alloy","authors":"Yanlin Tong, Ke Hua, Haoyang Xie, Yue Cao, Zhuobin Huang, Zhenpeng Liang, Xiaolin Li, Hongxing Wu, Haifeng Wang","doi":"10.1007/s40544-024-0870-y","DOIUrl":"https://doi.org/10.1007/s40544-024-0870-y","url":null,"abstract":"<p>Fretting wear damage of high-strength titanium fasteners has caused a large number of disastrous accidents. Traditionally, it is believed that both high strength and excellent ductility can reduce fretting wear damage. However, whether strength and ductility are contradictory or not and their appropriate matching strategy under the external applied normal stress (<i>F</i><sub>w</sub>) are still confusing problems. Here, by analyzing the subsurface-microstructure deformation mechanism of several samples containing various <i>α</i> precipitate features, for the first time, we design strategies to improve fretting damage resistance under different matching relation between <i>F</i><sub>w</sub> and the tensile strength of materials (<i>R</i><sub>m</sub>). It is found that when <i>F</i><sub>w</sub> is greater than <i>R</i><sub>m</sub> or <i>F</i><sub>w</sub> is nearly equivalent to <i>R</i><sub>m</sub>, the deformation mechanism mainly manifests as serious grain fragmentation of <i>β</i> and <i>α</i><sub>GB</sub> constituents. Homogeneous deformation in large areas only reduces damage to a limited extent. It is crucial to improve the strength to resist cracking and wear, but it is of little significance to improve the ductility. However, when <i>F</i><sub>w</sub> is far less than <i>R</i><sub>m</sub>, coordinated deformation ability reflected by ductility plays a more important role. The deformation mechanism mainly manifests as localized deformation of <i>β</i> and <i>α</i><sub>GB</sub> constituents (kinking induced by twinning and spheroidizing). A unique composite structure of nano-grained/lamellar layer and localized deformation transition layer reduces fretting damage by five times compared with a single nano-grained layer. Only when the strength is great enough, improving the plasticity can reduce wear. This study can provide a principle for designing fretting damage resistant alloys.\u0000</p>","PeriodicalId":12442,"journal":{"name":"Friction","volume":"17 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462579","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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