Article
Materials Science, Multidisciplinary
Li Lei, Zhongyu Cui, Hui Pan, Kun Pang, Xin Wang, Hongzhi Cui
Summary: The microstructure, corrosion behavior, and cytocompatibility of as-cast and extruded Mg-Zn-Mn-(0, 1.5)Sr alloys in Hank's solution were investigated. Extrusion resulted in grain refinement and preferred texture, while distinct features of Sr-free and Sr-containing alloys included an increase in dislocation density and fragmentation of Mg17Sr2, respectively. Extrusion significantly accelerated the corrosion rate of Sr-free alloy, while alloyed Sr eliminated this deterioration process. Sr alloying decreased the corrosion rate and enhanced the cytocompatibility of the extruded Mg-Zn-Mn alloy without affecting the corrosion penetration depth, demonstrating the superiority of Sr alloying for extruded magnesium alloys as implant materials.
Article
Chemistry, Physical
A. S. El-Tabei, M. A. Hegazy, A. H. Bedair, N. El Basiony, M. A. Sadeq
Summary: The new cationic amphiphilic substance DMNAPDAB demonstrates excellent inhibition performance on carbon steel in hydrochloric acid, with adsorption on CS surface following the Langmuir isotherm. Its protective film formation was confirmed by SEM and EDX results, showcasing its potential as a corrosion inhibitor.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Ahmed A. Farag, Hossam E. Abdallah, Emad A. Badr, Eslam A. Mohamed, Asmaa Ali, A. Y. El-Etre
Summary: The study aimed to synthesize and explore the inhibitory effects of three morpholinium cationic surfactants on carbon steel corrosion in petroleum wells formation water containing 3 M HCl solution at different temperatures. The synthesized compounds were characterized by FTIR and HNMR analysis, with inhibition efficiencies reaching up to 93.1%. Temperature effects on corrosion behavior were studied and the Villamil adsorption isotherm was found to be the most suitable model. Additionally, the biocidal activity and surface morphology improvements of the surfactants were investigated, showing promising results in corrosion inhibition.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Yuhang Wang, Xian Zhang, Lin Cheng, Jing Liu, Tingping Hou, Kaiming Wu
Summary: The study investigated the correlation between (Ca, Mg, Al)-O-x-S-y inclusions and localised marine corrosion of EH36 steels. The inclusions were categorized as 'active' or 'inactive' based on their ability to induce corrosion, with the ratio of CaO/Al2O3 being the main difference between them. Residual stress at the active inclusion/matrix interface was higher than the steel's yield strength, leading to the formation of a local plastic deformation zone and initiation of localized corrosion. Additionally, the occluded cell accelerated the propagation of corrosion, ultimately resulting in the dissolution of inclusions and the matrix forming a stable pit.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Wei Zhang, Bruce Brown, David Young, Gheorghe Bota, Srdjan Nesic, Marc Singer
Summary: The parametric study identified specific conditions that lead to corrosion of mild steel in marginally sour environments, including temperature, H2S pH, solution pH, and sodium chloride concentration. Transmission electron microscopy revealed a porous layer containing mackinawite and magnetite, with corrosion initiating when the mackinawite layer broke down and exposing the steel surface to corrosive substances, leading to propagation of corrosion due to galvanic coupling.
Article
Materials Science, Multidisciplinary
Ce Li, Jiajia Wu, Dun Zhang, Peng Wang, Zhihua Sun, Liyang Zhu, Yaohua Gao, Yi Wan, Zhiqing Yang, Yu Wang, Ee Li
Summary: This study investigated the microbiologically influenced corrosion of metals exposed to marine tidal zone, specifically the corrosion of EH40 steel affected by Halomonas titanicae under alternate and full immersion. The transition from full immersion to alternate pattern was found to accelerate corrosion in abiotic media, but enhanced the corrosion inhibition efficiency of H. titanicae towards steel. These differences were attributed to thin electrolyte layers, increased number of sessile cells, and their possibly enhanced aerobic respiration activity during alternate immersion.
Article
Chemistry, Physical
Dingli Wang, Yongming Li, Tai Chang, Ang Luo
Summary: Chitosan derivatives are effective green corrosion inhibitors, with a negative correlation between inhibitor concentration and inhibition efficiency. The erosion effect of the fluid on the corrosion inhibitor layer is proportional to the inlet velocity of the fluid.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Michiaki Yamasaki, Zhiminig Shi, Andrej Atrens, Akito Furukawa, Yoshihito Kawamura
Summary: A highly corrosion resistant Mg-Zn-Y-Al alloy with a multimodal microstructure has been developed, showing orientation dependent corrosion behavior. The addition of aluminum facilitates the formation of a protective surface film.
Article
Chemistry, Physical
Yuhang Wang, Xian Zhang, Wenzhui Wei, Xiangliang Wan, Jing Liu, Kaiming Wu
Summary: The study found that the inclusions in Cu-bearing steel and Ti-bearing steel have different effects on corrosion behavior, with Cu-bearing steel showing similar corrosion resistance to base steel.
Article
Materials Science, Multidisciplinary
Huiyun Tian, Zhongyu Cui, Heng Ma, Peilin Zhao, Maoxin Yan, Xin Wang, Hongzhi Cui
Summary: The effect of electrolyte presence form on the corrosion evolution and stress corrosion cracking (SCC) behavior of E690 steel in the simulated marine environment was investigated. The steel exhibited the highest corrosion rate in splash environment and the lowest corrosion rate in immersion environment due to differences in oxygen availability, rust layer property, and scour stress. γ-FeOOH dominated the rust formed in atmospheric environment, while Fe3O4 prevailed in the splash environment. The steel corroded in splash environment showed the most severe SCC degradation with high pit number density, high maximum pit depth, and high cathodic reaction activity.
Article
Chemistry, Physical
A. Thoume, D. Benmessaoud Left, A. Elmakssoudi, F. Benhiba, A. Zarrouk, N. Benzbiria, I Warad, M. Dakir, M. Azzi, M. Zertoubi
Summary: The research evaluated the adsorption properties and corrosion inhibition ability of CO and CO-NO2 on carbon steel in 1 M HCl using chemical and electrochemical techniques, showing that they act as mixed-type inhibitors with good inhibition activity and can form a barrier film on the steel surface.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Pengfei Guo, Xin Lin, Digby D. Macdonald, Benoit Ter-Ovanessian, Jianrui Liu, Guangling Song, Yufeng Zhang, Yongming Ren, Hongbo Lan, Weidong Huang
Summary: This study investigates the failure of transpassive films on transition metal alloys and finds that the failure of the film on nickel-based superalloy is mainly due to cracking on niobium-segregated phases and erosion-induced degradation at the metal/barrier layer interface. The study also reveals the formation of a bi-layer structure in the transpassive film after secondary passivation.
Article
Electrochemistry
Pengjie Wang, Liping Xiong, Zhongyi He, Xin Xu, Jianqiang Hu, Qi Chen, Renhui Zhang, Jibin Pu, Lei Guo
Summary: In this study, two new imidazoline derivatives (SMF and SMIF) were successfully synthesized and their corrosion inhibition ability and mechanism in HCl solution were confirmed through experimental and theoretical methods. The results showed that SMF and SMIF exhibited excellent corrosion inhibition performance, forming a stable protective film on the surface of Q235 and hindering charge transfer.
Article
Materials Science, Multidisciplinary
Ho Seok Kim, Bo Ram Kang, Seong Man Choi
Summary: A multilayer coating of hafnium carbide and titanium carbide was fabricated on SiC-coated carbon/carbon (C/C) composite using a vacuum plasma spraying (VPS) system. The analysis of microstructure, composition, adhesion strength, and ablation performance confirmed that the HfC/TiC multilayer coating can effectively protect the carbon composite material.
Article
Electrochemistry
Lianlian Liu, Lin Chen, Raymundo Case
Summary: This study aims to evaluate the effects of NaCl on hydrogen permeation and SSC susceptibility of carbon steel C110 under wet-H2S environments. The results show that a higher concentration of Cl- reduces hydrogen absorption and enhances SSC susceptibility. Additionally, it was found that a higher pit density under high Cl- concentration conditions leads to increased SSC susceptibility.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Ceramics
Youxing He, Xiaobo Wang, Tao Guo, Kewei Gao, Xiaolu Pang
Summary: The oxidation resistance and tribological behavior of CrAlN/SiNx multilayer films with different interface structures were investigated. The multilayer film exhibited better oxidation resistance at 900 degrees C, but showed a reversed trend at 1000 degrees C. The stacking faults in the multilayer film were induced by the oxidation of SiNx. The multilayer film with a crystalline interface showed lower coefficient of friction (COF) and better tribological properties compared to the CrAlN film and the multilayer film with an amorphous interface.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Huatian Xu, Kewei Gao, Qi Xiong, Haonan Li, Xiankang Zhong
Summary: This study investigates the under-deposit corrosion (UDC) phenomenon in shale gas flowback water containing sulfate reducing bacteria (SRB). The results show that SRB can adhere to bare steel and initiate corrosion, while deposit-covered steel is protected from SRB corrosion due to the barrier effect of the deposit layer. Additionally, a galvanic couple is formed between bare steel and deposit-covered steel, with SRB accelerating corrosion on the bare steel and promoting the anodic reaction under the deposit-covered steel.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Huili Sun, Wenting Lv, Yu Yang, Dongdong Li, Luchun Yan, Xiaolu Pang, Yang He, Kewei Gao
Summary: By altering the structures of Cu-rich precipitates, the hydrogen embrittlement susceptibility of high-strength steels can be significantly reduced while maintaining their ultimate tensile strength. The 9R-structured Cu-rich precipitates show the strongest binding and trapping capacity with hydrogen.
Article
Engineering, Geological
Kewei Gao, Hai Lin, Muhannad T. Suleiman, Pierre Bick, Tomas Babuska, Xiwei Li, Jeffrey Helm, Derick G. Brown, Nabil Zouari
Summary: The paper investigates the shear and tensile strength of microbial-induced calcite precipitation (MICP) treatment at the particle scale. Three different test setups were developed to measure the strength of MICP-treated CaCO3 bonds between glass beads. The results indicate that the improved test setup provides more accurate measurements of the bond strength.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Yanqi Tu, Saiyu Liu, Rongjian Shi, Shani Yang, Kewei Gao, Xiaolu Pang
Summary: The effects of cementite morphology on hydrogen trapping behavior in low-alloy pipeline steel were investigated in this study. A combination of microstructural observations, electrochemical hydrogen permeation experiments, and thermal desorption spectroscopy (TDS) analyses was used to quantitatively study hydrogen trapping behavior. The results showed that the presence of lamellar cementite in P-2 steel led to better irreversible hydrogen trapping ability compared to the granular cementite in P-1 steel.
ANTI-CORROSION METHODS AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Youpeng Song, Luchun Yan, Xiaolu Pang, Yanjing Su, Lijie Qiao, Kewei Gao
Summary: In this study, a series of nanocrystalline AlxCuy(FeCrNiCo)100_x-y (x = 6.44-50.51 at%, y = 8.49-40.31 at%) high entropy alloys (HEAs) were synthesized, and the effects of co-alloying Al and Cu on the corrosion resistance of FeCrNiCo HEAs were systematically investigated in a two-dimensional composition space. The microstructure and mechanical properties of typical alloy compositions were examined. The results showed that nanocrystalline Al16.29Cu13.04(FeCrNiCo)70.67 and Al19.59Cu17.08(FeCrNiCo)63.33 alloys exhibited balanced corrosion resistance, hardness, and plasticity. The underlying mechanisms for the effects of co-alloying Al and Cu on the corrosion resistance and mechanical properties were analyzed.
Article
Engineering, Mechanical
Ying Zheng, Huili Sun, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: The very high cycle fatigue behavior of precipitation hardening stainless steel (PHSS) with different aging times was investigated. The PHSS aged for 1 hour at 480 degrees C exhibited the highest fatigue strength, followed by 4 hours and 0.5 hours of aging. Both subsurface or internal inclusion-induced crack initiation (IICI) and non-inclusion-induced crack initiation (NIICI) were observed. The NIICI phenomenon was attributed to the nucleation and connection of microvoids within the delta-ferrite. Aging treatment had a significant influence on the dominant crack initiation mechanism by altering the interaction of dislocations and copper precipitates, which ultimately affected the fatigue performance.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Nanoscience & Nanotechnology
Rongjian Shi, Yanlin Wang, Supeng Lu, Saiyu Liu, Yanqi Tu, Shani Yang, Kewei Gao, Xu-Sheng Yang, Xiaolu Pang
Summary: The high-strength spring steel demonstrates superior hydrogen embrittlement resistance and satisfactory work hardening capacity after hydrogen pre-charging with dispersed multiple precipitates via multi-microalloying of 1.04 wt% Cr and 0.14 wt% V. The multiple precipitates include isolated (Mn, Cr, V)-enriched cementite, isolated V-enriched VC, and co-precipitation of cementite and VC, which act as effective hydrogen traps and reduce HE susceptibility by 23%, making this strategy beneficial for designing high-strength and HE-resistant automotive steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Linhao Tan, Dongdong Li, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: This study fully elucidates the advantages of the novel precipitation-hardened martensitic stainless steel (novel steel) in terms of an excellent strength-ductility balance, using various methods and tests. The novel steel significantly increases yield and ultimate tensile strength, and improves elongation compared to conventional PH13-8Mo steel. It is mainly strengthened and toughened by fine grain strengthening, precipitation strengthening of multiple precipitates, and the TRIP effect. The addition of Cu leads to the formation of metastable austenite and contributes to the TRIP effect.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Rongjian Shi, Yanqi Tu, Liang Yang, Saiyu Liu, Shani Yang, Kewei Gao, Xu-Sheng Yang, Xiaolu Pang
Summary: This study explored the influence of pre-strain and microstructures on the hydrogen trapping behaviors in 1-GPa high-strength martensitic steel. The results showed that the trapped reversible and trapped irreversible hydrogen contents significantly increased after a pre-strain of 5%. The microstructural evolution revealed that the presence of concomitant dislocation cell-twin duplex microstructure and tangled dislocations contributed to the enhanced hydrogen trapping.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Physical
Yihong Zhao, Mingwei Ren, Xiangdong Zhu, Zhangyu Ren, Yaofang Hu, Huhu Zhao, Weiheng Wang, Yunbo Chen, Kewei Gao, Yujing Zhou
Summary: This study demonstrates a strategy for simultaneously optimizing the rolling resistance, wet skid, and cut resistance of reinforced rubber using a supramolecular filler. The morphology of the supramolecular filler in the rubber matrix was studied using DSC and TEM. The vulcanizates containing the supramolecular filler showed improved cut resistance and different mechanical properties at different temperatures.
Article
Materials Science, Multidisciplinary
Xiaoge Wang, Luchun Yan, Kewei Gao, Pengcheng Li, Jiujiu Hao
Summary: Zinc-aluminum layered double hydroxides (ZnAl-LDHs) film was prepared on magnesium alloys with different surface roughness using metallographic preparation combined with the hydrothermal method. The results showed that ZnAl-LDHs film grew most intensely when the surface roughness was at a minimum of 0.094 μm, reaching a thickness of 3.8 μm with a static contact angle of 84.34 degrees and a minimum corrosion current density of 1.12 x 10(-4) A/cm(2). The study also proposed the possible growth and corrosion prevention mechanisms of LDHs films.
Article
Engineering, Mechanical
Ying Zheng, Huili Sun, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: The very high cycle fatigue properties of 17-4 PH stainless steel aged for 1 h and 4 h after hydrogen charging were investigated. The research found that hydrogen reduces fatigue strength and changes the crack initiation mode primarily induced by inclusions. The presence of intergranular facets on the fracture surface suggests that hydrogen accelerates crack initiation and early crack growth. The hydrogen-granular bright facet (GBF) mechanism can be explained as lath martensite fracture and dislocation cells formation, involving hydrogen-enhanced localized plasticity (HELP) and hydrogen-enhanced decohesion (HEDE) mechanisms. The hydrogen trapping effect of e-copper precipitates suppresses the degradation of hydrogen on fatigue properties.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Geological
Kewei Gao, Pierre Bick, Muhannad T. Suleiman, Xiwei Li, Jeffrey Helm, Derick G. G. Brown, Nabil Zouari
Summary: The wind erosion resistance of MICP-treated soil was investigated using wind tunnel experiments. The erosion modes and calcium carbonate content were analyzed to evaluate the effect of various factors on wind erosion mitigation. A MICP treatment protocol using bacteria medium followed by cementation medium was determined as the optimal treatment for increasing wind load resistance. The minimum calcium carbonate content necessary to mitigate wind erosion was also determined.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Ji Xiumei, Hou Meiling, Wang Long, Liu Jie, Gao Kewei
Summary: Based on the actual production data of the plate mill of Xingcheng Special Steel, two machine learning methods, including an extreme learning machine (ELM) combined with a traditional mathematical model and a deep learning framework based on TensorFlow, were proposed to predict deformation resistance and improve accuracy. The first method improved the structural form of the original model and optimized the neural network parameters, while the second method built deep neural networks with different structures and utilized optimization algorithms to enhance the model's generalizability and stability. The results showed significant improvement in prediction accuracy and application efficacy.
ACTA METALLURGICA SINICA
(2023)
Article
Materials Science, Multidisciplinary
Zhichao Shang, Xiaoping Cai, Farshid Pahlevani, Yan Zheng, Akbar Hojjati-Najafabadi, Xinran Gao, Baojing Zhang, Peizhong Feng
Summary: High porosity Co-Al-Fe intermetallics with 3D-microstructures were successfully synthesized in one step via a thermal explosion reaction. The link between pore structure and permeability was investigated using 3D-XRM technology. The corrosion resistance of the samples with different Fe contents was studied at 900 degrees C under an oxygen/sulphur atmosphere for up to 120 h. The results showed that the samples maintained stable pore structure and intact internal matrices, attributed to the formation of a thin protective layer on the surface. In addition, inward diffusion of S resulted in the formation of FeS nodules.
Article
Materials Science, Multidisciplinary
Lian Ma, Hain Yang, Daquan Zhang, Wei Wu
Summary: In this study, an environmentally friendly volatile corrosion inhibitor, lysine salts (LA), was prepared between graphene oxide (GO) layers using an in situ intercalation technique. The corrosion inhibition effect of LA was evaluated, and it was found that LA-GO2 achieved a 99.3% corrosion inhibition efficiency after composition optimization. The inhibition of the electrochemical anodic process on the surface of mild steel was the main reason for the high corrosion inhibition efficiency of LA-GO2. The properties of the surface film on the corroded steel were also characterized in detail to understand the corrosion inhibition mechanism of LA-GO2.
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Multidisciplinary
Zihua Wang, Chijia Wang, Ruitao Wang, Jiapeng Deng, Kun Zhang, Yanji Zhu, Huaiyuan Wang
Summary: A robust anti-corrosive coating has been developed using functional fly ash, which demonstrates excellent corrosion resistance and improved mechanical properties. The coating achieves these enhancements through molecular cross-linking design and surface augmentation techniques, resulting in a significantly improved impedance modulus compared to pure polyurea coatings.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Yang Li, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Yi Zhang, Jun Zuo, Meishuan Li
Summary: Cr2AlC diffusion barrier effectively blocks the diffusion of Ti, enhancing the stability and spalling resistance of the Al2O3 scales between NiCrAlY coating and TiAl alloy.
Article
Materials Science, Multidisciplinary
Weiyi Wang, Qinglin Pan, Xiangdong Wang, Bing Liu
Summary: By adding Ce, Sc, Y and Zr elements to Al-Mg-Si alloy, the microstructure of the alloy can be regulated, and the corrosion and heat resistance of the materials can be improved.
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Materials Science, Multidisciplinary
Yang Gao, Dayun Sun, Zhu Liu, Shuo Cong, Rui Tang, Yanping Huang, Lefu Zhang, Xianglong Guo
Summary: The corrosion characteristics of a novel alumina-forming austenitic steel in high-pressure high-temperature water environment were studied. The addition of aluminum has a negative effect on the continuity of the alumina scale.
Article
Materials Science, Multidisciplinary
Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, Shoshan T. Abrahami, Annick Hubin, Herman Terryn, Tom Hauffman
Summary: This work explores the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in organic coatings. An odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach is used to analyze the diffusion of ions independent from water uptake. The results show that a higher PVC leads to a more homogeneous coating structure, resulting in faster diffusion of ions and enhanced water uptake.
Article
Materials Science, Multidisciplinary
Eloa Lopes Maia, Serguei Gavrilov, Valentyn Tsisar, Kitty Baert, Iris De Graeve
Summary: The effect of pre-oxidation in air at 300-500°C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) has been investigated. It was found that pre-formed oxide films can protect the surface against dissolution, while high temperature pre-oxidation leads to localized corrosion.
Article
Materials Science, Multidisciplinary
Baozhuang Sun, Qiuyu Wang, Yue Pan, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: In this study, a non-steady electrochemical model was established to investigate stress corrosion cracking (SCC). The model was verified using 304 SS with various microstructures, confirming its effectiveness in assessing SCC susceptibility.
Article
Materials Science, Multidisciplinary
Xingyu Xiao, Xinhua Liu, Zhilei Wang, Xuexu Xu, Mingying Chen, Jianxin Xie
Summary: The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film.
Article
Materials Science, Multidisciplinary
Gen Zhang, Yan-Ping Huang, E. Jiang, Wei -Wei Liu, Hong Yang, Jing Xiong, Yong-Fu Zhao
Summary: The addition of aluminum has a significant influence on the intermetallic compounds in AFA alloys, particularly increasing the content of B2-NiAl phase. In the SCO2 environment, the oxide scales formed on AFA alloys with aluminum were thinner than on ASS without aluminum, and the structure of the oxide scales changed to a double-layer structure.
Article
Materials Science, Multidisciplinary
Yuxuan He, Guozheng Xiao, Chao Wang, Xuefeng Lu, Liuyuan Li, Shiying Liu, Yusheng Wu, Zhanjie Wang
Summary: The relationship between configurational entropy and lattice distortion in novel rare earth monosilicates was investigated, and the effect of configurational entropy on their properties was studied. The results showed that lattice distortion increased with the increase of configurational entropy, but a highly symmetrical crystal structure was formed when the configurational entropy was large enough, inhibiting the lattice distortion.
