IF 5.3 1区工程技术

Wear Pub Date : 2024-07-30 DOI: 10.1016/j.wear.2024.205524

引用次数: 0

Wear and thermal coupled comparative analysis of additively manufactured and machined polymer gears 快速成型和机加工聚合物齿轮的磨损和热耦合对比分析

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-29 DOI: 10.1016/j.wear.2024.205525

{"title":"Wear and thermal coupled comparative analysis of additively manufactured and machined polymer gears","authors":"","doi":"10.1016/j.wear.2024.205525","DOIUrl":"10.1016/j.wear.2024.205525","url":null,"abstract":"<div><p>This study investigates the potential use of additive manufacturing (AM)-produced gears in the polymer gear industry as an alternative to conventionally manufactured gears. The focus is on comparing the wear and thermal properties of polyamide 6 (PA6) gears, the most commonly used in industry, with those of polyetherimide (PEI) gears manufactured via AM. The research aims to determine whether AM offers any advantages over conventional methods, particularly with regard to wear resistance and thermal performance. The wear behaviour of both types of gears is examined under various operating conditions, with particular attention being paid to the initial wear rates and how they evolve. PEI and PA6 test gears were evaluated using a custom-built gear wear test rig. Throughout the wear test, polymer test gears were subjected to wear by running against a metal gear. The gears were tested at various rotational speeds for up to 1 million cycles. During this process, measurements were taken to determine surface roughness changes, operational noise levels, microstructure analyses using scanning electron microscopy (SEM), and chemical structure analyses using Fourier transform infrared spectroscopy (FTIR). Additionally, thermal properties such as temperature generation and stability are monitored with a thermal camera and infrared thermometer to understand the suitability of each gear material for different applications. PA6 gears demonstrate better wear resistance at low and medium rotational speeds, while PEI gears show superior performance at high speeds. Furthermore, PEI gears display enhanced thermal properties, with lower temperature increases during operation compared to PA6 gears; this can be attributed to the porous structure inherent in AM, which allows for better heat dissipation. The findings suggest that AM-produced PEI gears hold promise as an important alternative in high-speed applications due to their superior wear resistance and thermal performance compared to conventionally manufactured PA6 gears.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963968","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 influence of tire polishing on surface texture durability and skid resistance deterioration of asphalt pavement 轮胎抛光对沥青路面表面纹理耐久性和抗滑性劣化的影响研究

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-29 DOI: 10.1016/j.wear.2024.205518

{"title":"Study on the influence of tire polishing on surface texture durability and skid resistance deterioration of asphalt pavement","authors":"","doi":"10.1016/j.wear.2024.205518","DOIUrl":"10.1016/j.wear.2024.205518","url":null,"abstract":"<div><p>As an inherent attribute of asphalt pavement, texture durability is the essential reason for the change in skid resistance. However, different scale texture deterioration behavior remains unclear by tire wearing at present. To explore the influence of the durability of multi-scaled textures on skid resistance, nine pavement specimens were tested using the Harbin polishing and dynamic friction integrated experimental machine (HPFM). The pavement anti-skid texture tester (PATT-II) was used for high-precision texture scanning and reconstruction. The results show that the texture richness and skid resistance of the three types of pavements in 300 min polishing are ranked as Open-graded Friction Coarse (OGFC) > Stone Mastic Asphalt (SMA) > Asphalt Concrete (AC), while SMA presents the best durability, determined by the material skeleton structure of asphalt mixture. The macro-texture deterioration occurs slightly at first and then tends to stabilize in 300 min polishing. The micro-texture deterioration behavior is the same as the <em>μ</em><sub>HPFM</sub>, increasing rapidly at the beginning, then slowly decreasing, and finally remaining constant. This deterioration is caused by the asphalt damage and continuously wearing aggregate surface. The 2D-PSD deterioration behavior is more significant with a smaller texture scale in 300min polishing, and the most considerable contribution wavelength in the microscopic scale range is 0.15 mm–0.3 mm, which is determined by the adhesion characteristics and molecular mechanism between a mineral mixture and asphalt material. The influence of pavement texture on the dynamic friction coefficient is significantly different under different water film thicknesses, the micro-texture and macro-texture play the main roles in boundary and mixed lubrication, respectively.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885076","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

Understanding tool cutting-edge microstructure and deformation mechanism induced by adhesive wear in the turning of nickel-based superalloys 了解镍基超合金车削过程中粘着磨损诱发的刀具切削刃微观结构和变形机制

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-27 DOI: 10.1016/j.wear.2024.205519

{"title":"Understanding tool cutting-edge microstructure and deformation mechanism induced by adhesive wear in the turning of nickel-based superalloys","authors":"","doi":"10.1016/j.wear.2024.205519","DOIUrl":"10.1016/j.wear.2024.205519","url":null,"abstract":"<div><p>Nickel-based superalloy has great potential in the aerospace industry as key components. However, difficult-to-machine characteristics have further limited its application. Thermal-barrier coatings of the titanium-based family on carbide tools offer exceptional performance in cutting superalloys, combining high-temperature stability and remarkable toughness. This work primarily concentrates on understanding cutting-edge microstructure and deformation induced by tool adhesive wear in the turning of nickel-based superalloys with experiment and modelling. The dominant tool wear mechanisms are revealed to be adhesive wear and abrasive wear by SEM/EDS. The microstructure of the cutting-edge interface is qualitatively and quantitatively investigated by SEM/EDS and EBSD. The adhesive layer thickness at cutting edge is about 10–30 μm. The GND density of WC grains at cutting edge is 15-20 × 10<sup>14</sup>/m. The nanomechanics properties of the tool wear interface were quantitatively evaluated by nanoindentation. The average hardness of WC and Ni-superalloy at cutting-edge interface is evaluated to be 15–19 GPa and 6.2–6.5 GPa, respectively. Further, the underlying deformation mechanisms induced by tool wear behaviours are revealed through the transient heat conduction model and cutting-edge stress distribution model. This research offers a framework and mechanism for the cutting tool wear surface/interface characteristics targeted to the difficult-to-cut superalloy materials.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842214","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 double-sided textures matching on friction and wear performance in reciprocating contact interface 双面纹理匹配对往复式接触界面摩擦和磨损性能的影响

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-27 DOI: 10.1016/j.wear.2024.205522

引用次数: 0

Controllable tribological behavior of PNIPAM-graphene oxide nanocomposites at titanium alloy interface 钛合金界面上 PNIPAM-氧化石墨烯纳米复合材料的可控摩擦学行为

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-27 DOI: 10.1016/j.wear.2024.205521

引用次数: 0

Experimental study of micro-prismatic electrode array wear during EDM and application to the preparation of microcylindrical electrode array 电火花加工过程中微棱柱电极阵列磨损的实验研究及在制备微圆柱电极阵列中的应用

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-26 DOI: 10.1016/j.wear.2024.205516

{"title":"Experimental study of micro-prismatic electrode array wear during EDM and application to the preparation of microcylindrical electrode array","authors":"","doi":"10.1016/j.wear.2024.205516","DOIUrl":"10.1016/j.wear.2024.205516","url":null,"abstract":"<div><p>The focus of this study is to compare the wear characteristics of different types of micro-prismatic electrode array during EDM, and to propose a method for preparing microcylindrical electrode array based on micro-prismatic electrode array. Firstly, the characteristic of the micro-prismatic electrode that the front cross-section becomes circular after wear during EDM is clarified, and the wear form of the micro-prismatic electrode is analyzed. Then, the laws of the influence of electrode shape (triangle, square, hexagon), electrode material (pure copper, copper-tungsten alloy, pure tungsten), electrode size (200 μm, 300 μm, 400 μm) on the wear characteristics of the micro-prismatic electrode array, including the length of the wear of each part of the electrodes, the length of the area of the front cross-section that becomes rounded, the consistency of the wear of the electrode array, the machining efficiency, and electrode wear rate are summarized. After that, the process of changing the electrode array from square columns to cylinders using the new method is given, which confirms the feasibility of the method. Finally, the effects of peak current and pulse width on the size, machining efficiency, surface roughness, and surface micro-morphology of micro-cylindrical electrode array prepared by the new method are summarized. This study is of great significance for achieving mass production of microcylindrical electrode array.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141851541","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 high-temperature and high-pressure immersion corrosion durations on the fretting tribo-corrosion behaviors of Inconel 690 alloy 高温和高压浸泡腐蚀持续时间对 Inconel 690 合金的摩擦三腐蚀行为的影响

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-26 DOI: 10.1016/j.wear.2024.205501

引用次数: 0

Highly wear resistant metal bond for diamond tool based on two-step reactive sintered Fe3Al 基于两步反应烧结 Fe3Al 的金刚石工具高耐磨性金属结合剂

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-26 DOI: 10.1016/j.wear.2024.205517

{"title":"Highly wear resistant metal bond for diamond tool based on two-step reactive sintered Fe3Al","authors":"","doi":"10.1016/j.wear.2024.205517","DOIUrl":"10.1016/j.wear.2024.205517","url":null,"abstract":"<div><p>Metal bond diamond tools are regularly used in the machining of various hard and brittle materials. The mechanical properties and wear resistance of the metal bond are very important for the tool's life and machining performance. Herein, a low-cost and highly wear resistant Fe<sub>3</sub>Al bonded material for diamond tool was proposed. A novel two-step reactive sintering method, integrating short-term high-temperature reactive sintering and long-term low-temperature densification sintering, was proposed to prepare Fe<sub>3</sub>Al bond diamond tools. The effect of sintering temperature on the microstructure and mechanical properties of the Fe<sub>3</sub>Al bond was examined during one-step reactive sintering. The mechanical properties and tribological characteristics of the one-step and two-step reactive sintered Fe<sub>3</sub>Al and commercial Fe alloy bond were compared. The machining performance of the two-step reactive sintered Fe<sub>3</sub>Al bond diamond tool on sapphire was also examined and compared to that of a commercial Fe alloy bond diamond tool. The results showed that the relative density and mechanical properties of the Fe<sub>3</sub>Al bonded material were enhanced by increasing the sintering temperature during one-step reactive sintering. Moreover, the sample sintered at 1150-850 °C exhibited better mechanical properties and wear resistance compared to the one-step reactive sintered Fe<sub>3</sub>Al and commercial bond. The grinding ratio of the two-step reactive sintered Fe<sub>3</sub>Al bond diamond tool was 157 % higher than that of the commercial Fe alloy bond diamond tool.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141849315","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

A slip-line field model for independently characterizing shearing and ploughing effects in metal cutting processes 独立描述金属切削过程中剪切和犁耕效应的滑移线场模型

IF 5.3 1区工程技术

Wear Pub Date : 2024-07-26 DOI: 10.1016/j.wear.2024.205504

{"title":"A slip-line field model for independently characterizing shearing and ploughing effects in metal cutting processes","authors":"","doi":"10.1016/j.wear.2024.205504","DOIUrl":"10.1016/j.wear.2024.205504","url":null,"abstract":"<div><p>This study proposes a new slip-line field model to separately characterize the shearing-included cutting process and the pure-plough cutting process. The shear plane and dead metal zone in relation to the shearing effect are modelled by straight slip-lines, while the deformation area in relation to the ploughing effect is treated to have straight boundaries. The boundaries of the dead metal zone and ploughing area are determined by considering tool-workpiece frictional behaviours. The stresses acting on the boundaries of the ploughing area, dead metal zone and shear plane are separately modelled considering the thermal–mechanical coupling effect. Based on the minimum energy principle, the shear angle is originally modelled by following the dynamic requirement of chip flow to balance the forces acting on dead metal zone, shear plane and rake face. By iteratively solving the coupling effect among the temperature, stress and shear angle, the total cutting forces are acquired by integration operation through straight slip-lines. Experiment results and finite element simulations validate the proposed slip-line field model in predicting the shear angle and cutting forces for both micro and regular milling processes.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848293","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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