Article
Materials Science, Multidisciplinary
Takumi Kosaba, Izumi Muto, Yu Sugawara
Summary: This study investigates the effect of anodizing on the galvanic corrosion resistance of aluminum coupled to iron or Type 430 stainless steel in 100-times diluted synthetic seawater at 298 K and pH 8.2. The optimal anodizing conditions for the corrosion prevention of aluminum coupled to iron and aluminum coupled to Type 430 stainless steel were determined. The results show that an increase in the initiation potential of localized corrosion due to anodizing in H2SO4 effectively prevents the atmospheric corrosion of aluminum coupled to steels.
Article
Electrochemistry
Takumi Kosaba, Izumi Muto, Yu Sugawara
Summary: This study investigated the effect of anodizing on the galvanic corrosion resistance of AA5083 coupled to different materials. The results showed that anodizing effectively suppressed galvanic corrosion and the thickness of the oxide film played a key role in preventing corrosion.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Coatings & Films
Mahnam Ebadi, Mahdi Alishavandi, Mohammad Hossein Paydar
Summary: Anodizing improved the corrosion resistance of ARBed AA and AMC samples, but the processed samples exhibited altered electrochemical behavior due to the formation of a complex oxide structure.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Giulia Scampone, Giulio Timelli
Summary: Compared with pure aluminum and wrought aluminum alloys, anodizing Al foundry alloys is more challenging due to the high content of alloying elements, which hinders the uniform growth of the Al oxide layer and promotes the embedding of defects in the anodic film. The microstructure of the substrate and the anodizing parameters play a crucial role in determining the quality of the oxide layer. Variations in chemical composition, casting process, and pre- and post-anodizing treatments have significant effects on the anodizing response.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Monika Ostapiuk, Maryna G. Taryba, Lenia M. Calado, Jaroslaw Bienias, M. F. Montemor
Summary: The study found that using PEO and sol-gel as barrier layers can slow down the galvanic corrosion between magnesium alloy AZ31 and CFRP, providing short-term corrosion protection.
Article
Materials Science, Multidisciplinary
Yi-Xing Zhu, Guang-Ling Song, Peng-Peng Wu, Da-Jiang Zheng, Zi-Ming Wang
Summary: Research shows that surface burnishing and alloying of magnesium can result in a thicker and more uniform aluminum-enriched surface layer, which significantly enhances micro-hardness and corrosion resistance. This method helps to address the galvanic corrosion issue with magnesium alloys in engineering applications.
Article
Materials Science, Multidisciplinary
Huihui Geng, Junjia Cui, Guangyao Li, Jingqi Mao, Liang Ye
Summary: This study investigated the mechanical degradation of dissimilar Al-Fe joints after salt spray corrosion, finding that the ultimate shear strength only decreased by 10% after three weeks. Different forms of corrosion, such as crevice corrosion, galvanic corrosion, and stress corrosion, were observed in the welding regions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Mechanics
Chao Wu, Yang-Zhe Yu, Lik-ho Tam, John Orr, Li He
Summary: This study investigated the effects of GFS on the corrosion behavior and bond characteristics between steel and CFRP. Results suggest that while GFS may reduce the fatigue performance of the bond between steel and CFRP, it may slightly improve the static bond behavior.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Physical
JaeYoung Kwon, KwangSup Eom, MinJoong Kim, Ihsan Toor, SeKwon Oh, HyukSang Kwon
Summary: Hydrogen generation through the hydrolysis of aluminum alloys directly from alkaline water without the need for hydrogen storage technology has attracted significant attention. By continuously precipitating an electrochemically noble Al3Ni phase along the grain boundaries, the corrosion rate of the aluminum alloy can be accelerated, resulting in an excellent hydrogen generation rate that is about 6.4 times faster than pure aluminum. Furthermore, raising the solution temperature to 50 degrees C can further increase the optimal rate of hydrogen generation.
Article
Materials Science, Multidisciplinary
Bing Lei, Mingxiao Peng, Ling Liu, Shengnan Hu, Wei Zhang, Guozhe Meng
Summary: The galvanic corrosion of the porous multi-layer Al-BN abradable coating system is mainly influenced by the deposition of its corrosion products, leading to a three-stage process in chloride solution.
Article
Materials Science, Multidisciplinary
Zhipeng Yuan, Ting Yuan, Chen Liu, Zenglei Ni, Xiao Chen, Yi Luo, Yiyou Tu
Summary: The role of Si in the mechanism of intergranular corrosion (IGC) in Al-Mn-Fe-Mg-Cu alloy is still unclear. The microstructure at the grain boundaries of the alloy was characterized by high resolution transmission electron microscopy (HRTEM). The presence of Si layer, discrete Al4Cu2Mg8Si7 and alpha-Al(Fe,Mn)Si precipitates along the grain boundary, as well as the precipitation-free zone (PFZ) adjacent to the grain boundary, contribute to IGC.
Article
Energy & Fuels
Huixin Zhu, Zhiyong Huang, Guofeng Jin, Mingna Gao
Summary: This study investigated the galvanic corrosion behavior of Al 6061 coupled with SS 304 at different temperatures, revealing significant effects of temperature on corrosion behavior. Different forms of galvanic corrosion phenomena were observed when Al 6061 was paired with SS 304.
Article
Materials Science, Multidisciplinary
R. del Olmo, M. Mohedano, P. Visser, A. Rodriguez, E. Matykina, R. Arrabal
Summary: Chromic acid anodizing (CAA) is still commonly used in the aeronautic industry for corrosion protection, but Ce-containing sulfuric acid anodizing (SAA) has been identified as a promising alternative. This study found that thin sulfuric acid anodizing (TSAA) films containing Ce formed at low current density can approach the performance of CAA.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Osman Kahveci, Mehmet Fatih Kaya, Harun Erol
Summary: In this study, an Al-Zn-B alloy was developed to investigate the effect of AlB2 intermetallic phase on electrochemical performance in Al-air battery anodes. Various tests and measurements were conducted to observe the effect of 1-5 wt% B doping to the Al-5 wt% Zn alloy. Results showed that the corrosion rate increased by 20% in the 3 wt% B doped alloy compared to the Al5Zn alloy. Additionally, the corrosion potential of the alloy samples shifted from -1.841 V vs Ag/AgCl to -1.870 V vs Ag/AgCl with the addition of 3 wt% B.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Kai Zhang, Cheng Wang, Da-Wei Wang, Mei-Xuan Li, Yin-Long Ma, Zhen-Ming Hua, Lin-Yang Zhang, Jun Li, Hui-Yuan Wang
Summary: The underlying mechanism of solute redistribution during heat treatment in affecting corrosion behavior of Mg-1.19Al-0.28Ca-0.44Mn (wt%) alloy was systematically clarified. The supersaturated Al and Ca solutes in matrix effectively alleviate the driving force of micro-galvanic corrosion caused by Al-Mn phases, based on positive shift of matrix potential and film densification. After aging treatment, monoatomic-layer G.P. zones realize higher strength and better corrosion resistance of alloy as compared to nanosized Al2Ca, due to higher number density and less solute consumption in matrix.
Article
Materials Science, Multidisciplinary
Z. H. Fu, T. Li, M. L. Shan, G. Q. Gou, Z. Y. Zhu, C. P. Ma, W. Gao, Y. C. Hu
Article
Materials Science, Multidisciplinary
Z. H. Fu, B. J. Yang, M. L. Shan, T. Li, Z. Y. Zhu, C. P. Ma, X. Zhang, G. Q. Gou, Z. R. Wang, W. Gao
Article
Physics, Applied
Ting Li, Tengyi Yu, Guoqing Gou, Zhenghong Fu
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2020)
Article
Physics, Applied
Hang Lv, Guoqing Gou, Zhenghong Fu, Wei Gao
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2020)
Article
Materials Science, Multidisciplinary
Qiang Zeng, Zhenghong Fu, Bangjian Yang, Guoqing Gou, Hui Chen, ShaoWei Zhu
MATERIALS RESEARCH EXPRESS
(2020)
Article
Materials Science, Multidisciplinary
Wei Lu, Chuanping Ma, Guoqing Gou, Zhenghong Fu, Weiguang Sun, Xiaoli Che, Hui Chen, Wei Gao
Summary: The study investigated the fatigue crack propagation behavior of A7N01P-T4 aluminum alloy metal inert gas welded joints using potentiodynamic polarization analysis. The results showed that the corrosion fatigue crack growth rate in a 3.5 wt% NaCl solution was higher than in air. Additionally, it was observed that the corrosion fatigue crack growth rate varied in different regions of the welded joint, with the weld metal having the slowest rate and the heat-affected zone having the fastest rate.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2021)
Article
Chemistry, Physical
Z. H. Fu, B. J. Yang, M. Chen, G. Q. Gou, H. Chen
Summary: The study found that grain boundaries and dislocations are key factors controlling the hydrogen embrittlement behavior of the alloy. Low temperature-short time recrystallizing annealing can increase strength but decrease hydrogen embrittlement resistance due to residual dislocations. On the other hand, high temperature-long time recrystallizing annealing alloy shows lower strength but better hydrogen embrittlement resistance due to the reduction of grain boundaries and dislocations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Pengfei Wu, Kefu Gan, Dingshun Yan, Zhenghong Fu, Zhiming Li
Summary: The newly developed non-equiatomic Fe40Ni20Co20Cr20 (at.%) high-entropy alloy (HEA) shows excellent strength-ductility synergy, improved corrosion resistance, and higher electrochemical corrosion resistance compared to other alloys. The stability of the passive film in the alloy is attributed to the interaction between Co and other elements, leading to the formation of Co(Fe,Cr)2O4.
Article
Materials Science, Multidisciplinary
Zhenghong Fu, Bangjian Yang, Kefu Gan, Dingshun Yan, Zhiming Li, Guoqing Gou, Hui Chen, Zhirui Wang
Summary: This study demonstrates that modifying cellular structures through controlled annealing can effectively improve the hydrogen embrittlement resistance of selective laser melting processed alloys. Annealing preserved cellular structures while reducing dislocation densities, slightly reducing strength but significantly increasing ductility and HE resistance. The delayed crack initiation and propagation were attributed to hydrogen-enhanced local plasticity with formation of nano-twins and dislocation cells in the modified structures.
Article
Materials Science, Multidisciplinary
Zhenghong Fu, Pengfei Wu, Shuya Zhu, Kefu Gan, Dingshun Yan, Zhiming Li
Summary: The study found that C-doping can enhance the hydrogen embrittlement resistance of high-entropy alloys by adjusting phase stability and stacking fault energy, leading to the formation of abundant deformation-induced twins and epsilon-martensite. Meanwhile, C-N co-doping promotes planar dislocation slip, assisting grain and twin boundary cracking under deformation in a hydrogen environment.
Article
Engineering, Mechanical
Zhenghong Fu, Pengfei Wu, Yong Zhang, Kefu Gan, Dingshun Yan, Zhiming Li
Summary: The hydrogen-assisted fatigue crack propagation behavior of a selectively laser melted Inconel 718 alloy was studied under in situ electrochemical hydrogen charging, revealing that hydrogen significantly accelerates the fatigue crack growth rate (FCGR), especially at lower load frequencies. The crack propagates along the boundaries of the cellular structure, leading to decreased plasticity along the crack. Hydrogen reduces the critical strain for crack propagation and results in the acceleration of FCGR. Lower load frequencies induce higher concentration fluctuations and greater penetration depth of hydrogen ahead of the crack tip, further promoting the acceleration of FCGR.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Jinjun Xu, Zhongqi Hao, Zhenghong Fu, Xingdao He, Hui Wang, Guili Xu
Summary: Slow strain rate tensile tests under in situ hydrogen electrochemical charge were conducted to investigate the hydrogen embrittlement behavior of selective laser-melted (SLM) and post-heat-treated Inconel 718 alloys, along with microstructure evolution and cracking feature characterization. The study found that the high density of dislocations and local strain along the cellular structure walls in the as-SLM sample increased local hydrogen concentration, resulting in cracks along the cell walls. The precipitation of g0, g00, and 8 phases generated by solution aging significantly enhanced the tensile strength and HE susceptibility, with the 8 phase formation along the grain boundaries and cell walls leading to 8/g interface cracking in solution-aged samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhenghong Fu, Yong Zhang, Zhiming Li, Yiping Lu, Xiaoxiang Wu, Hui Wang
Summary: This study reports the development of a selectively laser melted eutectic high-entropy alloy with ultrahigh strength and good ductility through tuning micro-to nano-scale heterogeneous microstructures. The nano-sized B2 and L12 phases effectively hinder dislocation motion and improve strength, while the face-centered cubic matrix ensures uniform deformation and the Cr-rich clusters alleviate possible brittle failure of the hard B2 phase.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Pengfei Wu, Yong Zhang, Liuliu Han, Kefu Gan, Dingshun Yan, Weisong Wu, Lunhua He, Zhenghong Fu, Zhiming Li
Summary: In this study, a newly developed non-equiatomic high-entropy alloy with an ultra-low stacking fault energy was investigated. It was found that the formation of martensite transformation was suppressed due to the presence of chemical short-range order and atomic size misfit, leading to enhanced plastic deformation ability and ductility in the alloy.
