Article
Engineering, Mechanical
Lassi Raami, Tommi Varis, Kati Valtonen, Marco Wendler, Olena Volkova, Pasi Peura
Summary: This study investigates the cavitation erosion resistance of AISI 420-type stainless steel after quenching and partitioning (Q&P) heat treatment. Q&P-samples were prepared with different heat treatment parameters and their initial properties were examined. The results show that the cavitation erosion resistance of the stainless steel can be greatly enhanced with Q&P due to its high initial hardness and retained austenite fraction. The retained austenite absorbs cavitation bubble collapse energy by transforming into strain induced martensite, increasing the hardness of the steel and hindering crack propagation at grain boundaries.
Article
Engineering, Mechanical
Guiyan Gao, Zheng Zhang
Summary: This study investigates the erosion mechanism of 2Cr13 stainless steel under ultrasonic cavitation, finding that cracks initiate and propagate along grain boundaries and subgrain boundaries, with a thickness of the strain layer not exceeding 23 μm.
Article
Engineering, Mechanical
Josef Daniel, Sarka Houdkova, Josef Duliskovic, Jan Grossman
Summary: This paper focuses on studying the impact wear of superalloy Co-based HVOF-sprayed coatings, CoCrW and CoCrAlYTaCSi, using the dynamic impact test. The impact wear of the coatings is compared with erosion wear and sliding/abrasion wear tests, confirming the correlation between impact wear resistance and resistance to solid particle erosion.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Coatings & Films
M. Naeem, Madiha Qadeer, Zaka-ul-islam Mujahid, N. U. Rehman, J. C. Diaz-Guillen, R. R. M. Sousa, M. Shaftq
Summary: Cathodic cage plasma nitriding (CCPN) is an efficient technique to improve the surface properties of materials. Pulsed voltage sources are usually used to control the nitrided layer and the discharge transition. Time-resolved plasma diagnostics are important for monitoring plasma parameters, but their fundamental diagnostics are limited.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
M. Gaier, H-T Lin, Z. N. Farhat, K. P. Plucknett
Summary: This study demonstrates the feasibility of using a heat treatable binder phase for TiC-based cermets, showing a significant increase in hardness and scratch resistance with heat treatment. The research provides insights into the effects of heat treatments on stainless steels in metal ceramic composites.
Article
Engineering, Mechanical
Giovanni Bolelli, Daniel Steduto, Jarkko Kiilakoski, Tommi Varis, Luca Lusvarghi, Petri Vuoristo
Summary: Plasma sprayed Cr2O3 is commonly used for wear protection in industrial components. This study investigates how alloying with other oxides can alter its properties. It was found that the addition of TiO2 and ZrO2 to Cr2O3 coatings resulted in lower indentation hardness but higher toughness, impacting sliding wear resistance and abrasion differently.
Article
Materials Science, Textiles
Shankare Gowda, S. Srinivas, G. Santhosh, Siddaramaiah Basavarajaiah
Summary: This study successfully developed acrylonitrile butadiene styrene/polyamide 6 composites toughened with maleic anhydride grafted ethylene octene copolymer, reinforced with varying amounts of E-glass fibre. The results showed that composites with 15% EG displayed approximately 10 times superior wear resistance, and EG enhanced the mechanical performance of the composites significantly. The microstructure analysis of worn composite surfaces indicated the reinforcing role of glass fibre in the PA6 matrix.
JOURNAL OF THE TEXTILE INSTITUTE
(2021)
Article
Materials Science, Multidisciplinary
Majdouline Maher, Itziar Iraola-Arregui, Rachid Idouhli, Mohy Eddine Khadiri, Abdesselam Abouelfida, Hicham Ben Youcef, Benaissa Rhouta, Vera Trabadelo
Summary: The study evaluates the microstructure, abrasion resistance, and corrosion behavior of newly designed cost-effective (Cr-Mo-W-V) steels. The designed Cr-Mo-W-V steels have remarkable abrasion and corrosion resistance, with the least alloyed steel showing the highest abrasion resistance.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Coatings & Films
Tommi Varis, Juha Lagerbom, Tomi Suhonen, Lassi Raami, Sakari Terho, Jussi Laurila, Pasi Peura, Petri Vuoristo
Summary: Iron-based coatings are a sustainable solution for wear applications, and cold worked tool steels have potential for coating applications. This study investigates the potential of AISI D2 cold worked tool steel as a thermal spray coating and explores the effect of different heat treatments on the microstructure and properties of the coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Alena Michalcova, Vojtech Pecinka, Zdenek Kacenka, Jan Serak, Jiri Kubasek, Pavel Novak, Dalibor Vojtech
Summary: The study found that the C-free tool steel exhibited better thermal stability than Vanadis 60, allowing for longer periods of use at higher temperatures. Both materials had comparable hardness values in the utilization state. The strengthening in the Vanadis 60 steel was mainly caused by carbides, while the C-free steel was strengthened by the intermetallic phase.
Article
Engineering, Mechanical
Yulong Li, Paul Schreiber, Johannes Schneider, Christian Greiner
Summary: Abrasive wear mechanisms, such as two-body and three-body abrasion, dominate the performance and lifespan of tribological systems in various engineering fields. This study investigates the influence of hydrodynamic effects on the tribological mechanism of lubricated abrasive wear, highlighting the importance of considering not only the total amount of wear in a system.
Article
Materials Science, Multidisciplinary
Peifeng Li, Nesma T. Aboulkhair, Julan Wu, Kah L. Leng, Deyu Yang, Adam T. Clare, Xianghui Hou, Fang Xu
Summary: This study investigates the effect of interfacial reactions between Al and WS2 during composite production on tribological performance. The Al-WS2 fabricated at 580°C exhibited the lowest coefficient of friction and wear rate, while evidence suggests that a controlled amount of reaction products is beneficial for tribological properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Minghui Zhuang, Xiaoxia Li, Zhen Ma, Xin Xiong, Shidan Yuan, Hongbo Li
Summary: The effects of vanadium addition on the microstructure and two-body abrasive wear behavior of an Fe-5.5 wt% B surfacing alloy prepared by plasma arc welding were studied. It was found that increasing vanadium content in the alloy led to a decrease in microcracks and an increase in vanadium boride fraction. The primary Fe2B phase underwent refinement and changed in growth orientation. The hardness of the alloy initially increased and then decreased, while the wear resistance showed a continuous improvement.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Mechanical
Wen Hao Kan, Siyu Huang, Ziyan Man, Limei Yang, Aijun Huang, Li Chang, Yves Nadot, Julie M. Cairney, Gwenaelle Proust
Summary: This study investigated the tribological properties of an AlSi10Mg alloy fabricated using laser powder bed fusion in both as-built and T6-treated conditions. It was found that T6 treatment resulted in a loss of hardness, toughness, and strength, and had either no significant effect or was detrimental in dry sliding wear tests.
Article
Green & Sustainable Science & Technology
Tom Mackay, Isabel M. L. Ridge
Summary: The NetBuoy system is a low-cost buoyancy system developed for the WEC sector. It utilizes an air pressurized buoyant pod and a synthetic fiber rope net to provide structural rigidity. The testing results show that EPDM and Neoprene are the most abrasive-resistant materials, while Hypalon and Nitrite are the least resistant. The rope is largely unaffected by abrasion.
Article
Chemistry, Physical
Aman Gupta, Rajesh Kisni Khatirkar, Tushar Dandekar, Diksha Mahadule
Summary: In this study, microstructure and texture evolution of a beta-Ti alloy during multi-step cross rolling were investigated. The grain size and band thickness decreased with cold rolling reduction, and strain localizations were observed in the cold rolled samples. The presence of alpha and gamma fibers was noted in the as-received sample, with rotated cube component becoming significantly stronger at 80% cold rolling strain.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Diksha Mahadule, Rajesh Kisni Khatirkar, Aman Gupta, Ranjeet Kumar
Summary: The study examined the influence of heating temperature and cooling rate on the microstructure and mechanical properties of a Ti-6Al-1V-4Mo-Si alloy. Different processing conditions resulted in varying microstructures, with oil quenching from the beta phase field leading to high strength and low elongation. The elongation increased with decreasing heating temperature, with the highest elongation obtained from samples heated to 850 degrees C followed by furnace cooling.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Tushar R. Dandekar, Amit Kumar, Rajesh K. Khatirkar, Diksha Mahadule, Gowthaman Ayyappan
Summary: The effect of multistep cross rolling on UNS S32101 steel microstructure, texture, and magnetic properties was investigated in this study. It was found that cold-rolling reduction led to changes in microstructure and magnetic properties, as well as the formation of strain-induced martensite. Analysis of hysteresis loops and microstructures allowed for a better understanding of the impact of cold-rolling reduction on the properties of UNS S32101 steel.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Tushar Ramdas Dandekar, Aman Gupta, Rajesh Kisni Khatirkar, Ranjeet Kumar, Ashvin D. Gaikwad
Summary: Super duplex stainless steel joints were prepared using ER2594 and ER2595 electrodes by shielded metal arc welding process. The microstructure and texture of the weldments were investigated, showing that the ferrite structure was stronger than the austenite structure, and the hardness of ER2595 weldments was higher than that of ER2594 weldments.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2021)
Article
Engineering, Mechanical
Murat Demiral, Fethi Abbassi, Rajesh Khatirkar
Summary: In this study, a three-dimensional finite-element model was developed for simulating micro-cutting of single crystals. The results showed that cutting speed had limited effects on the chip formation mechanism, while temperature softening had significant effects on cutting force, chip shape, evolving strain gradients, and activation of different slip systems.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Kritika Singh, Sudharm Rathore, Aparna Singh
Summary: Nanostructured bainitic steels exhibit high strength, ductility, fracture toughness, and fatigue life, making them suitable for structures under rolling and/or sliding fatigue, but they require high wear resistance; in sliding fatigue tests, steel austempered at lower temperature demonstrates the highest wear resistance, with the formation of two distinct layers.
MATERIALS CHARACTERIZATION
(2021)
Article
Engineering, Mechanical
Soumyajit Mojumder, Kushal Mishra, Kritika Singh, Cong Qiu, Peter Mutton, Aparna Singh
Summary: The microstructure of flow lips formed on worn high rails serving in curved tracks has been investigated. Factors such as the angle of attack and rail curvature were found to influence the formation of flow lips. Microscopy techniques were used to characterize the flow lip, and it was observed that cracks originated from the outermost region of the flow lip. The alignment of the deformed microstructure and the trajectory of crack propagation varied depending on the curvature of the rail.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Mechanical
Soumyajit Mojumder, Kushal Mishra, Kritika Singh, Cong Qiu, Peter Mutton, Aparna Singh
Summary: The microstructure of the 'flow lip' formed at the lower gauge face in high rails in curved tracks has been investigated. The formation of white etching layer (WEL), brown etching layer (BEL), and deformed sublayers is revealed using optical images. Cracks originate from the WEL regions and the notches at the extreme end of the flow lip. SEM and EBSD analysis show that the WEL region consists of fine grains of ferrite and particles/fine fragments of cementite. The level of deformation is affected by the radius of curvature, with larger lamellae-type features in rails with larger radii.
Article
Materials Science, Multidisciplinary
Nikhil Kumar, Kritika Singh, Aparna Singh
Summary: This study investigates the microstructure and tensile properties of lightweight steel annealed at different temperatures. Various microscopy techniques were used to study the emergence of phases and precipitates. The study found that the samples annealed at different temperatures exhibited different mechanical properties and fracture morphologies.
Article
Materials Science, Multidisciplinary
Kritika Singh, Aparna Singh
Summary: Nano-structured bainitic (NSB) steels consist of carbon-rich retained austenite (RA) and bainitic ferrite (BF), exhibiting high strength, ductility, and damage tolerance, making them potential candidates for marine applications. A systematic study on the corrosion behavior of NSB steels under different austempering temperatures revealed that lower temperatures lead to decreased corrosion rates and increased depth of corrosion with longer immersion durations.
Article
Nanoscience & Nanotechnology
Nikhil Kumar, Kritika Singh, Aparna Singh
Summary: The mechanical properties and microstructural evolution of low-density steel were investigated after annealing at different temperatures. The formation of ordered Ni3Al-type particles and new austenite grains contributed to an increase in ultimate tensile strength and elongation to failure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Nidhi Gupta, Rajesh K. Khatirkar
Summary: This study investigates the effect of quenching temperature and tempering time on microstructure evolution in UNS S17400 precipitation-hardening stainless steel. The results show that there is little change in grain size with increasing quenching temperature, while the formation of various types of precipitates increases with tempering time. Lower quenching temperature results in higher reverted austenite formation.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Tushar R. Dandekar, Amit Kumar, Rajesh K. Khatirkar, Deepak Kumar, Satyam Suwas
Summary: The effect of microstructure and texture on the evolution of mechanical properties during recrystallization in cold rolled UNS S32101 lean duplex stainless steel sheet was investigated. The results showed that the microstructure changed from lamellar to near globular as the annealing time increased. The crystallographic texture weakened after recrystallization, leading to a decrease in hardness and stored energy.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Diksha Mahadule, Deepak Kumar, Tushar R. Dandekar, Rajesh K. Khatirkar, Satyam Suwas
Summary: The present study investigates the hot deformation behavior of a new Ti-6Al-4Mo-1V-0.1Si alloy. Flow characteristics were studied at strain rates ranging from 0.01s(-1) to 10s(-1) and temperatures from 800 to 1050 degrees C. The flow stress decreases with increasing deformation temperature and decreasing strain rate. Flow softening occurs at lower temperatures (800-900 degrees C) due to lamellae kinking, while flat flow curve characteristics are observed at higher temperatures (950-1050 degrees C) due to a balance of dynamic recovery and recrystallization. Constitutive modeling based on the Arrhenius hyperbolic sine equation predicts the flow stress characteristics during hot deformation. The strain rate sensitivity map was created for 0.69 strain. The optimal hot deformation zone was observed at 0.01s(-1) in the temperature range of 925-1050 degrees C, and at strain rates of 1s(-1) and 5s(-1) from 900 to 975 degrees C.
JOURNAL OF MATERIALS RESEARCH
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Kritika Singh, Vikas Swarnakar, A. R. Singh
Summary: This study investigates the project selection process in manufacturing organizations, identifying nine main project selection criteria and using the Best Worst Method (BWM) for weight calculation. Prioritization of five projects is achieved through weighting and pairwise comparison, offering insight for organizational decision-making in project selection.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Mechanical
Yankui Song, Ke Xiao, Guo Xiang
Summary: The novelty of this study lies in constructing an Entropy-based wear and fluid-solid-thermal (FST) coupled model for journal bearings, and revealing the transient interaction behavior between wear evolution and FST evolution during repeated starting and stopping. The wear rate is measured experimentally, and the contact temperature, friction coefficient and normal contact force are obtained from the validated FST model. Wear tests and numerical calculations are conducted to validate the predicted wear rate and investigate the time-varying wear and FST evolution of journal bearings.
Article
Engineering, Mechanical
Xin-long Liu, Xin Guan, Yuan Zhong, Qian Xiao, Yong Cao, Wu-lue Zhang, Song Zhang, Yi-ting Zheng, Ming-sheng Gao, Dao-yun Chen, Wen-bin Yang
Summary: Gaps in the conductor rail joints of intercity trains have an impact on current transmission and the wear of carbon skateboards. These gaps decrease the coefficient of friction, increase electrical contact resistance, and affect the wear rate of carbon skateboards.
Article
Engineering, Mechanical
Yuhang Wu, Conglin Dong, Xiuqin Bai, Chengqing Yuan
Summary: The study developed a new composite material by incorporating hexagonal boron nitride (h-BN) particles into a thermoplastic polyurethane (TPU) matrix, which exhibited excellent self-lubricating properties and reduced frictional excitation forces. The addition of h-BN particles effectively reduced the coefficient of friction, decreased fluctuation amplitude, enhanced wear resistance, and attenuated vibration behaviors.
Article
Engineering, Mechanical
Tiancheng Ouyang, Xiuyang Sun, Wentao Tang, Yinxuan Li, Zhi Qun Tian, Yanzhou Li
Summary: By adding nitrogen-doped graphene and C60 nanoparticles to the lubricant, a highly efficient nano-lubricant with vibration and noise reduction properties is synthesized.
Article
Engineering, Mechanical
Xin Zhuo, Jun Cao, Haibo Huang, Li Liu, Xinkun Suo, Peiqing Ye, Zeshan Abbas
Summary: A polymer coating prepared by liquid spraying technology on the surface of 20CrMo steel demonstrates good tribological and anti-cavitation erosive properties. It can effectively replace CuPb24Sn copper alloy in valve plates for pumps under different lubrication conditions. The coating exhibits adhesive wear and reduces frictional loss, and mainly shows abrasive wear under complex working conditions. Its lipophilicity, high hardness to elastic modulus ratio, and corrosion resistance are the main influencing factors for its performance.
Article
Engineering, Mechanical
Md. Aminul Islam, Jiaren (Jimmy) Jiang, Yongsong Xie
Summary: Erosion-corrosion is a major factor in material loss and reduced useful life of hydro-transport equipment. This study evaluates the erosion-corrosion characteristics of different materials and finds that matrix wear affects the degradation of carbides. Sufficient wear and corrosion resistance in the surrounding matrix are important for good erosion-corrosion resistance.
Article
Engineering, Mechanical
Andre Dubois, Oussama Filali, Laurent Dubar
Summary: This study investigates the effect of surface roughness, contact pressure, and lubrication on the onset of galling in aluminum 6082-T6 using a pin-on-plate tribometer. The experimental results show that the roughness and lubricants play a significant role in preventing galling.
Article
Engineering, Mechanical
Jizhan Wu, Peitang Wei, Guoqiang Liu, Difa Chen, Xiuhua Zhang, Taimin Chen, Huaiju Liu
Summary: This study conducted a comprehensive evaluation of the DLC coating treatment on the loading capacity of gears and characterized the surface features and fatigue performance. The results demonstrate that DLC coating significantly improves the hardness and surface residual compressive stress of the gears, as well as enhances their contact fatigue performance.
Article
Engineering, Mechanical
Yangping Liu, Hwaran Lee, Annsley Mace, Jeremy L. Gilbert
Summary: An AFM-based single asperity tribology method was used to investigate the wear performance of carbides and base metal matrix in high carbon CoCrMo alloy. The wear behavior of the two types of carbides was stress-dependent and influenced by chemical composition. Cr-rich carbides exhibited higher wear resistance compared to Mo-rich carbides.
Article
Engineering, Mechanical
Zdenek Riha, Michal Zelenak, Akash Nag, Jakub Poloprudsky, Tomas Kruml, Sergej Hloch
Summary: This study investigates the erosion performances of a high-speed modulated jet (MWJ) and continuous water jet (CWJ). By comparing different nozzles and water jet powers, the effects of modulated and continuous jets on aluminum alloy were studied. The results show that under certain conditions, modulated jet can create deeper and sharper grooves while reducing the impact of lateral flow.
Article
Engineering, Mechanical
Chunyu Yu, Weipu Li, Yang Guo, Xianbin Sun, Fanli Hong, Ning Sun, Qinghai Zhang
Summary: This study explores the relationship between the wear rate of train brake pads and its features, and proposes a method for predicting the wear rate suitable for small sample data. Grey relational analysis and Pearson correlation analysis are used to determine the preferred features that affect the wear rate, and a BOA-BP model is established for prediction. The results show that BOA-BP exhibits better advantages in prediction with small samples.
Article
Engineering, Mechanical
Shan Yin, Xin Zhao, Shuangchao Huang, Zefeng Wen, Xuesong Jin
Summary: This study simulated the rolling contact of a driving wheelset over tangent and curved tracks at a speed up to 500 km/h using an explicit finite element approach to derive creep curves. The comparison between quasi-steady curves and transient curves in the presence of rail corrugation helped to identify cases where traditional theories are inapplicable and where transient effects must be considered. Additionally, the study further analyzed the influence of middle/high-frequency vibrations in the presence of rail corrugation.
Article
Engineering, Mechanical
Jiyao Zhang, Yuanlie Yu, Junlei Tang, Yingying Wang, Honggang Sun, Kaikai Song, Jianhong Gong, Pingping Liu, Xiaoming Liu, Lina Hu, Parthiban Ramasamy, Juergen Eckert
Summary: The influence of high-carbon addition on the microstructure, hardness, and wear behavior of CoCrNi alloy was investigated. It was found that the addition of carbon resulted in the formation of carbide particles, enhancing the hardness and improving the wear resistance. Fracture and detachment of hard carbides during friction introduced additional abrasive particles, transitioning the wear mechanism from adhesive-dominated to abrasive-dominated.
Article
Engineering, Mechanical
Yanfei Liu, Shengtao Yu, Ruize Zhang, Xiangyu Ge, Wenzhong Wang
Summary: This study reports the tribological behavior of nanodiamond plate (NDPL) as a nanoadditive for the first time and compares it with nanodiamond particles (NDPA). The results show that NDPL provides better lubrication performance at higher concentrations, and the sliding between NDPLs and the structural transformation from sp3 to sp2 carbon play a crucial role in lubrication and wear resistance.
