Article
Materials Science, Multidisciplinary
Junkai Ma, Guoliang Hou, Haobo Cao, Yulong An, Huidi Zhou, Jianmin Chen, Wenshan Duan
Summary: The study revealed that the cavitation erosion mass losses of nickel-aluminum bronzes in seawater were significantly lower, with cavitation load improving mechanical properties and cavitation heat reducing CE damage by inducing the formation of a protective oxide film on the surface.
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
Acoustics
Zhenbo Qin, Xuehan Li, Da-hai Xia, Yiwen Zhang, Chao Feng, Zhong Wu, Wenbin Hu
Summary: The study found that the compressive stress exacerbated the selective phase corrosion of nickel-aluminum bronze alloy, leading to lattice distortion, increased surface roughness, and intensified synergistic effect of electrochemical corrosion and mechanical erosion.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Metallurgy & Metallurgical Engineering
Qi-Ning Song, Hui -Lin LI, Hao-Nan Zhang, Hao Hong, Nan Xu, Gen-Yuan Zhang, Ye-Feng Bao, Yan-Xin Qiao
Summary: The microstructure, corrosion and cavitation erosion behaviors of different heat treated nickel aluminum bronzes in 3.5 wt.% NaCl solution were investigated. The study found that the heat treatment significantly influenced the structure and properties of the alloys, with quenching treatment exhibiting positive effects on corrosion resistance.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Yang Li, Ying Lian, Yanjun Sun
Summary: Friction stir processing (FSP) method was used to improve the properties of as-cast nickel aluminum bronze (NAB) alloy, resulting in finer and more homogeneous microstructure, uniform element distribution, and better mechanical properties. FSP NAB alloys showed lower cumulative cavitation erosion mass loss in different test solutions, indicating improved cavitation erosion resistance. The corrosion effect on cavitation erosion was more significant for FSP NAB alloys compared to the as-cast NAB due to their better pure cavitation erosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Yang Li, Ying Lian, Yanjun Sun
Summary: Friction stir processing can refine the microstructure of as-cast nickel aluminum bronze alloys, improve cavitation erosion resistance, but also increase sensitivity to corrosive media in artificial seawater. The synergistic effect plays a significant role in the performance of FSP NAB alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Q. N. Song, H. N. Zhang, H. L. Li, H. Hong, S. Y. Sun, N. Xu, G. Y. Zhang, Y. F. Bao, Y. X. Qiao
Summary: A cladding manganese-aluminum-bronze (MAB) layer obtained by metal-inert gas welding (MIG) on a cast MAB plate exhibited improved corrosion resistance and cavitation erosion resistance compared to the cast MAB. The cladding layer had a finer microstructure and lower corrosion rate, while the cast MAB exhibited deeper corrosion pits and higher cavitation erosion rate.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Engineering, Mechanical
Ye Tian, Hang Zhao, Rui Yang, Xiaomei Liu, Hua Li, Xiuyong Chen
Summary: This study evaluated the cavitation erosion behavior of nickel aluminum bronze (NAB) after exposure to Bacillus sp. biofilm in artificial seawater. The results showed that the biofilm could inhibit corrosion and retain the cavitation erosion resistance of NAB.
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
N. M. Mota, S. S. M. Tavares, A. M. do Nascimento, G. Zeeman, M. V. Biezma-Moraleda
Summary: Butterfly valves in the seawater cooling system of an offshore oil platform failed unexpectedly after three to six months of operation. The failure was attributed to welding defects, lack of proper post weld heat treatment, and galvanic corrosion between different materials used in the valves.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Mechanical
R. Khadem Hosseini, Sh Yareiee
Summary: This study identified the failure mechanisms of a nickel aluminum bronze butterfly valve used in a seawater desalination unit at a refinery plant through chemical analysis and microscopy examinations and used CFD and FSI to simulate the effects of valve opening on fluid behavior and stress distribution. The main failure mechanisms were found to be erosion corrosion and cavitation.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Materials Science, Coatings & Films
Shuang Peng, Jiang Xu, Zhengyang Li, Shuyun Jiang, Zong-Han Xie, Paul Munroe
Summary: The study revealed that the NbC coating exhibited better cavitation erosion-corrosion resistance compared to the Ti-6Al-4V alloy, with the noise resistance and slope values of the NbC coating remaining almost constant regardless of the output power. The charge of the corrosion event and the total energy of the d series crystals for the NbC coating were significantly lower than that of the Ti-6Al-4V alloy, indicating a high propensity of pitting corrosion for the alloy.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jian Zheng, Ranran Liu, Lingling Ning
Summary: This study investigates the selective corrosion behavior of cast nickel-aluminum bronze (NAB) in seawater and identifies chemical component segregation as the fundamental reason. The corrosion primarily occurs at the joints of valve discs and seal rings. Furthermore, corrosion cracks mainly appear at the grain boundary between the alpha and kappa phases.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2023)
Article
Materials Science, Multidisciplinary
Siqi Zeng, Shubing Hu, Guangkun Cheng
Summary: Nickel aluminum bronze is susceptible to cavitation corrosion in seawater. Shot peening can enhance its cavitation performance through improved surface mechanical strength. Shot peening increases the corrosion current densities, but the samples treated with 40 A intensity exhibit the lowest mass loss and highest surface micro-hardness in cavitation tests.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yanhua Zeng, Fenfen Yang, Zongning Chen, Enyu Guo, Minqiang Gao, Xuejian Wang, Huijun Kang, Tongmin Wang
Summary: The mechanical properties and corrosion behavior of as-cast, as-annealed, and hot-rolled nickel-aluminum bronze alloy in NaCl solution were investigated. Annealing introduces kappa phases to precipitate in the alpha phase, while hot rolling spheroidizes and disperses the kappa phases, enhancing the alloy's strength, hardness, and elongation. Additionally, the corrosion resistance of the NAB samples is significantly improved by hot rolling, with selective phase corrosion occurring.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Tian Gao, Zhihong Liu, Lanlan Yang, Yanbing Tang, Daohua Lu, Yang Yu, Haokun Yang, Yanxin Qiao
Summary: The passivation behavior of selective laser melting 316L stainless steel on different building planes was studied. It was found that the XOZ and YOZ planes have a semicircular molten pool structure, while the XOY plane shows a columnar molten pool structure. The XOZ plane exhibits smaller grain sizes and a higher proportion of low-angle grain boundaries compared to the YOZ and XOY planes. The electrochemical testing results indicate that the XOZ plane has a lower corrosion tendency and a thicker passive film with a higher content of Cr2O3. The XOZ plane, with a higher Crox + hy / (Feox + hy + Crox + hy) ratio, demonstrates excellent passivation performance and better electrochemical properties than the other two planes.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Lei Huang, Zhaohui Zhou, Lanlan Yang, Yanxin Qiao
Summary: The microstructures, phase compositions, and high-temperature oxidation behavior of a NiCrAlY coating fabricated by arc ion plating were investigated using various analytical techniques. The results showed that the coating exhibited excellent oxidation resistance with the formation of a protective Al2O3 scale after being oxidized at 1050 degrees C for 100 hours. The transformation of the beta phase to the gamma/gamma' phase was observed, and interdiffusion zone (IDZ), secondary reaction zone (SRZ), and needle-like TCP phases were detected in the superalloy substrate beneath the coating.
Article
Materials Science, Multidisciplinary
Lei Huang, Shunli Zheng, Yue Qin, Jianyang Han, Yanxin Qiao, Jian Chen
Summary: The corrosion behavior of a Ti-6Al-4V alloy prepared using selective laser melting (SLM) in a 0.1 mol/L NaOH solution was studied and compared with a commercially forged Ti-6Al-4V alloy. The commercially forged alloy showed higher corrosion resistance, which can be attributed to the presence of more active spots on the alloy surface and more defects in the passive films.
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
Acoustics
Liang Li, Yanxin Qiao, Lianmin Zhang, Chengtao Li, Zhong Liu, Rongyao Ma, Lanlan Yang, Jingyong Li, Yugui Zheng
Summary: This study utilized electrochemical noise technology to investigate the influence of surface damage induced by cavitation erosion (CE) on the pitting and passivation behaviors of TA31 Ti alloy. The results showed that TA31 Ti alloy had high corrosion resistance in NaCl solutions. However, the passivation ability was reduced due to the residual tensile stress layer formed during grinding and polishing. After 1 hour of CE, the residual tensile stress layer was eliminated and the passivation ability improved, leading to the initiation of pitting corrosion on the material surface. Increasing the CE time from 1 hour to 2 hours gradually decreased the passivation ability of the alloy, promoting the transition from pitting initiation to metastable pitting growth. However, with CE time increasing from 2 hours to 6 hours, the damage mechanism of uniform thinning increased the passivation ability and stability of the alloy.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Lei Wu, Aili Ma, Lianmin Zhang, Guangming Li, Lingyue Hu, Zhengbin Wang, Yugui Zheng
Summary: The erosion-corrosion behavior of 90/10 and 70/30 copper-nickel tubes was investigated. It was found that the corrosion product film formed at 1.5 m/s for 90/10 tube and at 0.5 m/s for 70/30 tube showed the best corrosion resistance. The critical flow velocity for 90/10 tube was between 3 m/s and 4 m/s, while for 70/30 tube, it was beyond 4.7 m/s.
Review
Materials Science, Multidisciplinary
Jun Wang, Qiuyue Wang, Yun Zhao, Pengfei Li, Tongyuan Ji, Gongnian Zou, Yanxin Qiao, Zhou Zhou, Guowei Wang, Dan Song
Summary: The paper comprehensively discusses the macro- and micro-corrosion behavior of various types of steel rebar, as well as the effects of inducing factors such as potential differences between dissimilar metals and concentration differences in the service environment on macrocell corrosion of steel rebar. The paper lists commonly used ZRA (zero-resistance ammeter), micro-area electrochemical testing technology, and evaluation techniques in the laboratory, as well as electrochemical testing techniques used in engineering testing. It also briefly introduces common experimental models for corrosion of rebar macrocells. Based on the internal characteristics of macrocell corrosion of reinforced concrete, the paper proposes a control strategy for macrocell corrosion and provides a preliminary prospect of the future direction of macrocell corrosion of steel rebar.
Article
Materials Science, Multidisciplinary
Pengjie Zhou, Yingjie Wang, Qilong Liu, Yanxin Qiao, Shujin Chen
Summary: The hot corrosion behavior of Co-9Al-9.5W-xSi alloys in a salt mixture at 900°C was studied. The effect of Si on hot corrosion resistance was investigated using corrosion kinetics. Surface morphology of corrosion products was analyzed by SEM with EDS and phase constituents were examined by XRD. The results showed that hot corrosion involved sulfidation and oxidation. Increasing Si content significantly improved the hot corrosion resistance of the alloy. Corrosion scales on the three Co-based alloys consisted of Co3O4, CoO, CoAl2O4, CoWO4, and Al2O3. The hot corrosion mechanism of the Co-based alloy in the presence of 75 wt% Na2SO4 and 25 wt% NaCl deposits was analyzed.
Article
Physics, Multidisciplinary
Jiawei Zhu, Zhaolong Liu, Hongtao Yuan, Hansen Zhou, Yanxin Qiao, Xiangping Xu, Jiasheng Zou
Summary: In this study, a WC-10Ni/NiCrBSi composite coating was prepared on Q235 steel using flexible coating cloth and vacuum brazing technologies. The surface hardness and corrosion resistance of the coating were investigated. Results showed that the corrosion resistance of the coating improved with increasing cladding temperature, but decreased with increasing WC-10Ni content. Microscopic analysis revealed the presence of galvanic corrosion in the micro-zone corrosion.
Article
Materials Science, Multidisciplinary
Yecheng Liu, Zhibin Zheng, Jun Long, Zhibiao Xu, Sihai Jiao, Yanxin Qiao, Kaihong Zheng, Fuxing Yin
Summary: A composite steel plate for marine construction was fabricated using 316L stainless steel and A6 carbon steel through hot rolling. The corrosion behaviors of the cladding material, carbon steel substrate, and the interface between stainless steel and carbon steel were analyzed in a marine atmosphere and seawater. The results showed significant accelerated corrosion along the interface in the carbon steel part, but the composite interface exhibited better corrosion resistance in the electrochemical tests.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Mengmeng Yang, Jiaying Zhou, Haijun Huang, Shuo Cao, Qing-Miao Hu, Wei Li, Qingjun Chen, Yanxin Qiao, Hao Wang
Summary: By using high-throughput first-principles calculations, the segregation capacity of fifteen widely used metallic alloying elements at the grain boundary in low alloy ferritic steel was systematically investigated. The impact of strain energy minimization on segregation was found to be comparable to that of chemical energy minimization, especially for large alloying atoms. The findings suggest that the segregation of large alloy atoms on the grain boundaries can be predicted by their atomic volume, providing valuable insights for alloy development and grain boundary engineering.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Fengyin Gao, Yanxin Qiao, Jian Chen, Lanlan Yang, Huiling Zhou, Zhibin Zheng, Lianmin Zhang
Summary: The effect of nitrogen content on the composition, structure and protectiveness of passive films formed on high-nitrogen austenitic stainless steels (HNSS) in a NaCl solution was studied using electrochemical tests combined with SEM, EBSD and XPS. The results showed that higher nitrogen content led to a larger proportion of low-angle grain boundaries, lower corrosion current density and higher corrosion resistance due to the presence of stable oxides.
NPJ MATERIALS DEGRADATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Guowei Wang, Dan Song, Yanxin Qiao, Jiangbo Cheng, Huan Liu, Jinghua Jiang, Aibin Ma, Xiaolong Ma
Summary: A one-step hydrothermal processing using a stearic-acid-based precursor medium was developed to produce super-hydrophobic and corrosion-resistant coatings for magnesium-lithium alloys. The coatings were formed through hydrothermal conversion and the concurrent formation of low surface energy materials. The obtained coating exhibited super-hydrophobicity and excellent corrosion resistance due to the multiscale microstructures and through-thickness stearates.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
