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erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements

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Friction 2019年第4期7卷 340-350页

作者： Aleksandar VENCL Ilija BOBIC Biljana BOBIC Kristina JAKIMOVSKA Petr SVOBODA Mara KANDEVA Faculty of Mechanical Engineering University of BelgradeKraljice Marije 16Belgrade 11120Serbia Institute of Nuclear Sciences'Vinca' University of BelgradeMike Petrovica Alasa 12-14Belgrade 11001Serbia Institute of Chemistry Technology and MetallurgyUniversity of BelgradeNjegoseva 12Belgrade 11000Serbia Faculty of Mechanical Engineering in Skopje Ss.Cyril and Methodius UniversityKarposh II bbSkopje 1000Macedonia Faculty of Mechanical Engineering Brno University of TechnologyTechnicka2896/2Brno 61669Czech Republic Faculty of Industrial Technology Technical University of Sofia8 Kliment Ohridski BlvdSofia 1000Bulgaria

Metal matrix nanocomposites(MMnCs)comprise a metal matrix filled with nanosized reinforcements with physical and mechanical properties that are very different from those of the *** ZA-27 alloy-based nanocomposites,the metal matrix provides ductility and toughness,while usually used ceramic reinforcements give high strength and *** ZA-27 alloy-based nanocomposites,reinforced with different types(Si C and Al2O3),amounts(0.2 wt.%,0.3 wt.%,and 0.5 wt.%)and sizes(25 nm,50 nm,and 100 nm)of nanoparticles were produced through the compocasting process with mechanical alloying pre-processing(ball milling).It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to the formation of a finer structure in the nanocomposites matrix and an improvement in the basic mechanical properties(hardness and compressive yield strength)through the enhanced dislocation density strengthening *** particle erosive wear testing demonstrated that these improvements were followed with an increase in the erosive wear resistance of tested nanocomposites,as ***,by analyzing the influences of type,amount,and size of nanoparticles on the erosive wear resistance of nanocomposites,it was demonstrated that there is an optimal amount of nanoparticles,which in our case is 0.3 wt.%,and that the presence of SiC nanoparticles and smaller nanoparticles in nanocomposites had more beneficial influence on erosive wear resistance.

关键词： ZA-27 alloy nanocomposites nanoparticles compocasting fractography erosive wear

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erosive wear and wear Mechanism of in situ TiC_P/Fe Composites

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Journal of Materials Science & Technology 2005年第5期21卷 719-723页

作者： Zhaojing LIU, Zhiliang NING , Fengzhen LI, Xiurong YAO and Shanzhi RENSchool of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China School of Materials Science and Engineering Harbin University of Science and Technology Harbin 150080 China

The base structure of in situ TiCp/Fe composites fabricated under industrial condition was changed by different heat treatments. erosive wear tests were carried out and the results were compared with that of wear-resistant white cast iron. The results suggest that the wear resistance of the in situ TiCp/Fe composite is higher than that of wear-resistant white cast iron under the sand erosive wear condition. The wear mechanism of the wear-resistant white cast iron was a cycle process that base surface was worn and carbides were exposed, then carbides was broken and wear pits appeared. While the wear mechanism of in situ TiCp/Fe composite was a cycle process that base surface was worn and TiC grains were exposed and dropped. The wear resistance of in situ TiCp/Fe composite was lower than that of wear-resistant white cast iron under the slurry erosive wear condition. Under such circumstance, the material was not only undergone erosive wear but also electrochemistry erosion due to the contact with water in the medium. The wear behaviours can be a combination of two kinds of wear and the sand erosive wear is worse than slurry erosive wear.

关键词： In situ TiCp/Fe composite erosive wear wear mechanism

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Taguchi approach to influence of processing parameters on erosive wear behaviour of Al7034-T6 composites

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Transactions of Nonferrous Metals Society of China 2017年第10期27卷 2163-2171页

作者： B.A.MUDASAR PASHA Kaleemulla MOHAMED Department of Mechanical Engineering GMIT Davanagere 577004 Karnataka India Department of Mechanical Engineering UBDTCE Davanagere 577004 Karnataka India

Taguchi technique was used to predict the influence of processing parameters on the erosive wear behavior Al7034-T6composite reinforced with SiC and Al2O3particles in different mass *** hybrid metal matrix composites(HMMCs)werefabricated by using a simple technique called stir casting *** electron microscope(SEM)was used to study thesurface morphology of the composite and its evolution according to processing *** design of experiment(DOE)based onTaguchi’s L16orthogonal array was used to identify various erosion *** most influencing parameter affecting the wear rate *** results indicate that erosion wear rate of this hybrid composite is greatly influenced more by filler content and impactvelocity respectively compared to other *** also shows the significant wear resistance with the increase in the filler contentsof SiC and Al2O3particles,respectively.

关键词： hybrid metal matrix composite erosive wear stir casting SiC Al2O3 Taguchi design

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Slurry erosive wear Characteristics of Engineering Ceramics for Hydraulic Machinery

Slurry Erosive Wear Characteristics of Engineering Ceramics ...

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The 3～〔rd〕International Conference on High-Performance Ceramics(CICC-3)（2）

作者： Juan Liu Longhao Qi Hongyuan Xu and Hezhuo MiaoDept. of Thermal Engineering Tsinghua University Beijing 100084 ChinaDept. of Materials Sci. and Engineering Tsinghua University.Beijing 100084 China

＜正＞ Engineering ceramics have a high application potential for wear-protection of different equipment used for electric power generating, mining and mineral industries. The ZTA （zirconia toughened alumina） and alumina （92%, 95%） have been prepared. Effects of varying the impact velocity and volume content of erodent particle and erosive time are investigated. Scanning electron microscopic examination of the eroded ceramic surfaces provides insights into the erosive wear mechanisms. The material removal processes include chipping out of lateral cracks caused by impact of the erodent particles, grain boundary cracking and grain pull out, as well as plastic deformation caused by the repeated sliding and impact of the particles.

关键词： Ceramics erosive wear Hydraulic machinery wear mechanism

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STUDIES　OF　SOLID－LIQUID　TWO－PHASE　TURBULENT　FLOWS　AND　wear　IN　HYDRAULIC　TURBOMACHINERY

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Journal of Hydrodynamics 1996年第2期8卷 72-76页

作者： Liu, Xiaobing Sichuan Inst of Technology Chengdu China

The Lagrangian equation of motion for solid particles in an arbitrary flow field is derived. The linear differential equation form and the general solution of this equation are obtained. Motion of solid particles in dilute solid-liquid turbulent flows is numerically solved and analysed. The K-εtwo-equation turbulence model, the volume fraction turbulence model, the mixed Eulerian-Lagrangian turbulence model, and the dense mixture turbulence model as well as the erosive wear model are developed. Using these models, the turbulent flows and the erosive wear in some hydraulic turbomachinery ducts are numerically predicted. The numerical results show good agreement with the experiments.

关键词： hydraulic turbomachinery solid-liquid two-phase flows turbulence model erosive wear numerical prediction

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Effect of laser shock processing on erosive resistance of 6061-T6 aluminum

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Transactions of Nonferrous Metals Society of China 2016年第6期26卷 1522-1530页

作者： J.IBARRA E.RODRíGUEZ O.JIMéNEZ G.GóMEZ-ROSAS M.FLORES J.VERDUZCO J.CHáVEZ Universidad de Guadalajara Departamento de Ingeniería de Proyectos Universidad de Guadalajara Departamento de Física Centro Universitario de Ciencias Exactas e Ingenierías

Application of laser shock processing （LSP） on 6061-T6 aluminum was made in order to evaluate its response to the erosive wear by silica sand. Impact angles of 15° , 30° , 60° and 90° were tested, two particle speeds （37 and 58 m/s） and two LSP irradiation conditions were used. Erosion marks were characterized by 3D profilometry and SEM analysis was conducted to identify the erosion mechanisms for each tested angle. The results showed a maximum erosive wear at low impact angles （ductile type behavior）. Erosion strength and the erosion mechanisms were not affected by the application of LSP and they were attributed to the high strain rate of the erosion phenomena. A few differences encountered on the erosion plots were explained on the basis of the surface roughness left by the LSP process. The maximum mass loss and the maximum erosion penetration happened in different impact angles （15° and 30° , respectively）. Finally, a well-defined erosion mechanism transition was observed, from cutting action at low impact angle, to crater formation at 90° of incidence.

关键词： 6061-T6 aluminum erosive wear laser shock processing

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Analysis on cavitation erosion resistance of isostatic graphite

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Journal of Southeast University(English Edition) 2020年第2期36卷 123-127页

作者： Ding Hongqin Jiang Shuyun School of Mechanical Engineering Southeast University Nanjing 211189 China

Isostatic graphite materials with 8%porosity and 14%porosity were prepared by the cold isostatic pressing *** erosion resistance of the isostatic graphite was evaluated through cavitation tests in an ultrasonic vibration *** volume loss and erosion morphology of the isostatic graphite were adopted to investigate the cavitation erosion resistance of the isostatic *** cavitation test results show that after ultrasonic vibration of 14 h,the volume loss of the isostatic graphite materials with 8%porosity and 14%porosity are 35%and 46%of the carbon graphite material,*** isostatic graphite material with 8%porosity exhibits an outstanding capability to resist cavitation erosion damage,and the cavitation erosion resistance of the isostatic graphite enhances with the decrease in *** damage mechanism of isostatic graphite is brittle fracture attributed to the shock wave and micro *** isostatic graphite with low porosity exhibits excellent cavitation erosion resistance due to its fine graphite particles,homogeneous structure and high degree of hardness.

关键词： isostatic graphite cavitation erosion erosive wear porosity

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Study of the wear and Corrosion Performance of Hard Coatings Applied by Different Processes on Low Carbon Steel

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Materials Sciences and Applications 2016年第7期7卷 358-370页

作者： Carlos Roberto Camello Lima Rodolfo Libardi Flávio Camargo Miguel Angel Reyes Mojena Hipólito Domingo Carvajal Fals Valtair Antonio Ferraresi Methodist University of Piracicaba Santa Bárbara d’Oeste Sao Paulo Brazil Ogramac Surface Engineering Santo Antonio de Posse Sao Paulo Brazil Oriente University Santiago de Cuba Cuba Federal University of Uberlandia Uberlandia Minas Gerais Brazil

Most of materials used in applications that require high wear resistance also undergo corrosive action of the service environment. The damage caused by the combination of both processes on the materials leads to huge economic losses in industry. Hard coatings are widely used as engineering solution to increase the lifetime of components operating in conditions of wear combined with corrosion. Nowadays, the most versatile techniques for applying such coatings are welding and thermal spraying. This work evaluates and compares the properties of coatings obtained by thermal spraying and welding using selected feeding materials. The performance of the coatings in corrosion and erosive wear tests is discussed. From the erosion tests performed for impact angle of 90°, a similar performance for the thermally sprayed tungsten carbide coatings and the welded stainless steel coatings with higher input energy was observed. Welded samples presented the best performance in corrosion test.

关键词： Hard Coatings HVOF Welding erosive wear Corrosion

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