Article
Engineering, Mechanical
Arun Rajput, J. Ramkumar, K. Mondal
Summary: The effect of strong oxidizer and operating temperature on the cavitation erosion resistance of different microstructures of a high carbon steel was studied. The results showed that the addition of a strong oxidizer significantly increased the cavitation erosion rate of the high carbon steel.
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
Zhibin Zheng, Shuai Wang, Jun Long, Hui Liu, Peixian Han, Yanxin Qiao, Kaihong Zheng
Summary: Wear-resistant steels with different zirconium contents were prepared to investigate the influence of zirconium on the cavitation erosion-corrosion behavior. The results showed that appropriate addition of zirconium could effectively improve the cavitation erosion-corrosion resistance of the steel, while excessive addition of zirconium caused the precipitation of large-sized zirconium compounds, leading to damage of the steel.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Z. X. Li, L. M. Zhang, A. L. Ma, J. X. Hu, S. Zhang, E. F. Daniel, Y. G. Zheng
Summary: The study compared the cavitation erosion behavior of 304 stainless steel in salt water on the rolling surface and longitudinal section, finding that the rolling surface exhibited better resistance to cavitation erosion and improved corrosion resistance and repassivation performance. The morphology evolution and protection capability of passive films on different rolling surfaces were also discussed.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Renshi Zheng, Xiaoyu Zhao, Leilei Dong, Gang Liu, Yi Huang, Yunze Xu
Summary: This study investigates the cavitation erosion-corrosion performances of X65 pipeline steel at different locations of a Venturi pipe. The results demonstrate that the collapse of bubbles at throat downstream leads to pitting damage, thereby accelerating localized corrosion. Cavitation erosion is solely induced by corrosion enhanced erosion at the employed flow rate. Local hardness degradation and crack initiation at anodic sites are the two fundamental requirements for erosion to occur. Along with the formation of deep pits, the fracture of the steel substrate at the pit boundary becomes the primary contributor to erosion, which is induced by repeated bubble collapse and corrosion assistance. The synergy of corrosion and cavitation erosion is the main cause of steel failure in the Venturi pipe.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Zhenhua Wang, Yuefeng Wang
Summary: The CE behavior of Z3CN20-09M stainless steel was studied, and its influence on corrosion resistance was analyzed. During the incubation stage, damage primarily occurred in austenite, while brittle ferrite fracture dominated after the incubation stage. One hour of exposure improved the corrosion resistance.
MATERIALS & DESIGN
(2022)
Article
Engineering, Mechanical
Miao Yu, Haijun Zhang, Ye Tian, Rui Yang, Hua Li, Xiuyong Chen
Summary: This study explored the impact of marine bacteria biofilms on the cavitation erosion resistance of 316L stainless steel in artificial seawater. The results showed that the presence of Bacillus subtilis reduced the number of corrosion pits compared to samples with Pseudomonas aeruginosa. Further analysis indicated that these corrosion pits were susceptible to cavitation erosion, leading to a significant decrease in cavitation erosion resistance in samples immersed in Pseudomonas aeruginosa. Additionally, it was observed that the increase in mass loss during cavitation erosion was positively correlated with the pitting area.
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
Physics, Multidisciplinary
Liang Li, Yanxin Qiao, Huiling Zhou, Xin Li, Lei Huang, Lanlan Yang, Lei Wang
Summary: The cavitation erosion-corrosion behaviors of high nitrogen austenitic stainless steel were studied in 0.5 mol l(-1) NaCl solution under static and cavitation erosion conditions. The results showed that the corrosive media promoted mass loss, and the samples under cavitation erosion conditions had a higher corrosion rate compared to the samples under static conditions. Increasing cavitation erosion time led to a decrease in corrosion resistance. The composition of the passive film was significantly affected by cavitation erosion, promoting an increase in Cr2O3 and Fe2O3.
Article
Engineering, Mechanical
Zhenhua Wang, Bing Zhang
Summary: The study reveals the initiation and propagation of cavitation erosion in super ferritic stainless steels. Cavitation erosion initiates at persistent slip bands and pits in grains with low Taylor factors, propagating along {100} planes and crossing grain boundaries below a certain angle. Grain boundaries with higher misorientation angles tend to retard the propagation of cavitation erosion.
Article
Materials Science, Multidisciplinary
B. S. Cao, C. L. Wu, L. Wang, S. Zhang, C. H. Zhang, X. Y. Sun
Summary: Iso-material manufacturing (LSM) technique was applied to improve the corrosion and cavitation erosion resistance of 304 stainless steel. Different energy densities result in different microstructures and mechanical properties, with the sample prepared at the highest energy density showing the best corrosion resistance and the sample at the second highest energy density exhibiting the best cavitation erosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
T. Zhao, S. Zhang, Z. Y. Wang, C. H. Zhang, D. X. Zhang, N. W. Wang, C. L. Wu
Summary: Inconel 625 and Hastelloy C-276 nickel-based alloy coatings were prepared on 304 stainless steels using cold metal transfer (CMT) method to improve corrosion, cavitation erosion and wear resistance. The coatings exhibited higher corrosion resistance, cavitation erosion resistance, and wear resistance compared to the 304 substrate, with Hastelloy C-276 coating showing superior performance.
Article
Acoustics
Morteza Abedini, Stefanie Hanke, Fabian Reuter
Summary: We have quantitatively studied cavitation damage non-invasively, in-place and time-resolved at microsecond resolution. By generating a single, laser-induced bubble in an aqueous NaCl solution near the surface of an aluminum sample, we were able to measure the cavitation damage in the nanometer thin passive layer of the aluminum surface via the corrosion current from repassivation. Correlation between the corrosion current and the bubble dynamics allows for understanding the contribution of cavitation damage at different stages of the bubble dynamics.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Q. N. Song, Y. Wang, Y. Q. Wu, X. Y. Zhu, N. Xu, G. Y. Zhang, Y. F. Bao, J. H. Zhao, L. J. Zhao, Y. Gao, Y. X. Qiao
Summary: The cavitation erosion behaviors of two aluminum bronzes after pre-corrosion in 3.5% NaCl solution were studied. Mechanical impact was found to be the dominant factor causing the cavitation erosion damage of the pre-corroded samples. Pre-corrosion increased the contribution of pure erosion to the cavitation erosion-corrosion damage, leading to increased surface roughness and weakened mechanical properties. This resulted in significant material loss and the formation of large and deep cavities. The inferior mechanical property of one of the aluminum bronzes greatly contributed to its severe cavitation erosion damage. Pre-corrosion had a greater influence on the cavitation erosion behavior of the other aluminum bronze due to the deterioration of its cavitation resistance caused by corrosion damage.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Dominika E. Zakrzewska, Marta H. Buszko, Alicja K. Krella, Anna Komenda, Grzegorz Mordarski, Robert P. Socha
Summary: Cavitation erosion is a common occurrence in many industries, leading to the search for methods and parameters to minimize its effects on materials. Studies have shown that a lack of incubation time during cavitation tests can result in a linear increase in losses, with observed damages overlapping to widen the erosion area and compromise the coating's integrity.
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.
