Article
Materials Science, Coatings & Films
Dong Han, Jin Zhang, Yong Lian, Pengfei Ji, Weisheng Xu, Guichuan Tang
Summary: A composite coating was fabricated to improve the ignition resistance of ZM5 alloy. The PEO/aluminum phosphate composite coating showed the best ignition resistance and self-extinguishing property. Three characteristic stages were observed for ZM5 alloy and its coating at different temperatures.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tianyu Zhao, Qi Wang, Ruirun Chen, Xiaowei Wang, Yanqing Su, Hengzhi Fu
Summary: Zr and Mo elements are introduced into the Nb-Si based alloy to improve its room-temperature fracture toughness and oxidation resistance at high-temperature environment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Gi-Dong Park, Ji Hoon Yang, Kyung-Hwang Lee, Hyo-Jin Kim, Seung-Hyo Lee, Jun Kang, Yong-Sup Yun, Myeong-Hoon Lee
Summary: Alloy films with excellent corrosion resistance were fabricated by depositing an Mg film on Al-Si coated steel sheets and applying heat treatment. The Mg in the film was widely distributed in a dissolved state on the AI phase and continuously involved in the corrosion product formation reaction, leading to the excellent barrier effect against corrosion factors. The corrosion resistance evaluation results were explained by analyzing the properties of the alloy film and the mechanism of forming corrosion products.
Article
Chemistry, Multidisciplinary
Xinyi Zhao, Tao Gu, Haiyang Zhang, Zeyu Wang, Hassaan Ahmad Butt, Yucheng Lei
Summary: This study investigates the ignition mechanism of magnesium alloys during solidification. It is found that the rupture of oxide scales directly induces combustion of the melt, and the rupture route of oxide scales is buckling cracks. The ignition process is correlated with pouring temperature, cooling rate, and casting modulus.
FRONTIERS IN CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yong Liu, Yinchuan Wang, Jialiang Lin, Meng Zhou, Fei Yu, Yongcan Huang, Bin Kang, Deli Wang, Tianbing Wang, Hui Zeng
Summary: The study found that brushite coated JDBM had the highest corrosion resistance, followed by uncoated JDBM, and then pure Mg. The main corrosion product of the Mg alloys in the cell culture medium was MgCO3 center dot 3H(2)O. The corrosion form of the JDBM alloys was uniform corrosion, while that of pure Mg was not uniform.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Bin Wang, ShunPing Sun, HongJin Wang, XiaoPing Li, WeiNing Lei
Summary: The study demonstrated that MoSi2 alloyed with Al and Cr showed improved oxidation resistance at high temperatures, forming a dense and continuous Al2O3-SiO2 oxide film that protected the material surface from oxidation damage. The MoSi2 alloy with 3% Al and 9% Cr exhibited four times higher high-temperature oxidation resistance compared to pure MoSi2.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Yusong Ma, Kaichuang Zhang, Shizhou Ma, Jinyan He, Xiqiang Gai, Xinggao Zhang
Summary: The study found that MgB2 alloy has good ignition characteristics, with significantly reduced ignition temperature, making it suitable for use in gunpowder, propellant, explosives, and pyrotechnics. The study also found that the ignition reaction of MgB2 mainly occurs on the surface, with the ignition process divided into two stages.
Review
Metallurgy & Metallurgical Engineering
Jing Ni, Li Jin, Jian Zeng, Jing Li, Fulin Wang, Fenghua Wang, Shuai Dong, Jie Dong
Summary: This article systematically investigates the ignition mechanisms of Mg alloys and concludes the factors influencing the ignition resistance from oxide film and substrate microstructure, as well as the mechanisms of alloying elements improving the ignition resistance. It also summarizes Mg alloys with high strength and good ignition-proof performance, including Mg-Al-Ca based alloys, SEN alloys, and Mg-Y and Mg-Gd based alloys. The shortages and the future focus of these alloys are reviewed. The aim of this article is to promote the understanding of oxidation and ignition mechanisms of Mg alloys and provide reference for the development of Mg alloys with high strength and excellent ignition-proof performance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Julia Nascimento Pereira, Vinicius Fernandes de Souza, Artur Mariano De Sousa Malafaia
Summary: This study investigated the cyclic oxidation resistance of FeSiCrNi alloys with different silicon and chromium contents, demonstrating that high silicon content in the alloy can lead to the formation of a protective oxide layer, enhancing the oxidation resistance.
OXIDATION OF METALS
(2021)
Article
Chemistry, Physical
Jiri Kubasek, Peter Minarik, Klara Hosova, Stanislav Sasek, Michal Knapek, Jozef Vesely, Jitka Straska, Drahomir Dvorsky, Miroslav Cavojsky, Dalibor Vojtech
Summary: The novel Mg-4.5Gd-3.4Y-2.6Ca alloy is designed for aircraft parts manufacturing as a lightweight material. The alloy exhibits good mechanical properties and exceptionally high ignition temperature, with the extrusion process significantly affecting the microstructure and properties. Tensile yield strength and ignition temperature are observed to vary with extrusion temperature, making the alloy a promising candidate for aircraft applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xuesong Yang, Xuewen Li, Tongtong Zhang, Chao Xu, Guohua Fan, Jie Zhang
Summary: A novel laminated TiAl matrix composite with alternating equiaxed grain layers and fully lamellar grain layers was successfully fabricated using hot pressing and multi-step reaction annealing. The oxidation behavior of the composite at 800 degrees C was studied, showing a typical multilayer oxide scale structure. Although there were differences in oxidation behavior between different grain layers, the thickness of the oxide scale was almost identical, indicating isotropic oxidation resistance. The addition of Si effectively enhanced the oxidation resistance of the composite.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Coatings & Films
T. Glechner, H. G. Oemer, T. Wojcik, M. Weiss, A. Limbeck, J. Ramm, P. Polcik, H. Riedl
Summary: The oxidation behavior of Si alloyed transition metal diborides coatings was studied in this research, and the addition of Si was found to improve the oxidation performance. Hf0.21Si0.18B0.61 and Cr0.26Si0.16B0.58 coatings formed thin oxide scales of about 400nm thick at 1200°C in ambient air, showing significantly reduced oxidation kinetics.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Hana Thurlova, Filip Prusa
Summary: Substituting part of Mn with Al in equiatomic CoCrFeNiMn alloy can enhance the hardness and strength of the alloy, with the most promising mechanical properties observed in the CoCrFeNiMn5Al15 alloy. All prepared alloys showed good thermal stability, with higher Al content leading to better resistance against high-temperature oxidation.
Article
Materials Science, Multidisciplinary
Ruoxuan Li, Seiji Yamashita, Hideki Kita
Summary: In this study, graphite powder was treated with magnesium(II) phosphate solution to improve its oxidation resistance at high temperatures while maintaining its lubricating properties. The treated powder retained the unique layered structure of graphite and formed a C-O-P chemical bond to cover the reaction site of graphite, resulting in improved oxidation resistance. The mechanism of the treatment was clarified through specific chemical bonding state analyses using various techniques.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yueling Guo, Jian Peng, Siyi Peng, Fengchao An, Wenjun Lu, Zhiming Li
Summary: In this study, the interplay effects of Si and Nb alloying on the oxidation behaviors of refractory high entropy alloys (RHEAs) at 1000°C were investigated. The alloying of Nb and Si promotes the formation of dendritic microstructures, suppresses the transition from parabolic to linear oxidation kinetics and significantly improves oxidation resistance. Severe cracking of oxide scales is also reduced through Nb and Si alloying. According to scanning transmission electron microscopy analysis, ZrO2 and TiO2 are initially formed during oxidation, and oxidation proceeds with the inward diffusion of oxygen, preferentially through the interdendritic region and BCC grain boundaries.
Correction
Metallurgy & Metallurgical Engineering
Xingrui Chen, Zhaoyang Yin, Qichi Le, Shaochen Ning, Fuxiao Yu
INTERNATIONAL JOURNAL OF METALCASTING
(2022)
Article
Metallurgy & Metallurgical Engineering
Xingrui Chen, Chaoyang Yin, Qichi Le, Shaochen Ning, Fuxiao Yu
Summary: A novel alternating-frequency ultrasonic melt treatment (AUMT) technology is used to refine the grain and improve the strength of AS41 magnesium alloy. The AUMT exhibits better grain refinement efficiency than traditional methods and helps eliminate the agglomeration of Mg2Si, ultimately improving the tensile strength and elongation of AS41.
INTERNATIONAL JOURNAL OF METALCASTING
(2022)
Article
Materials Science, Multidisciplinary
Qiyu Liao, Wenxin Hu, Qichi Le, Xingrui Chen, Yanchao Jiang
Summary: The addition of La-rich MM leads to the formation of Al-RE phases in the AZ110 alloy, which significantly inhibits the nucleation and growth of twins, leading to a transition in the deformation mechanism from twinning to multiple slip. Additionally, the Al-RE phases contribute to the improvement of tension-compression yield asymmetry in the extruded AZ110 alloy through the combined effects of grain refinement, texture weakening, and the transformation in deformation mechanism.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Electrochemistry
Qi Zou, Qichi Le, Xingrui Chen, Yonghui Jia, Chunyan Ban, Tong Wang, Henan Wang, Ruizhen Guo, Liang Ren, Andrej Atrens
Summary: The addition of gallium to Mg-Al-Zn alloys can refine the microstructure, reduce the self-corrosion rate, increase the electrochemical activity, and promote discharge performance. The grain refinement and increased grain boundaries due to gallium contribute to the improved discharge performance of the alloys.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Xingrui Chen, Qi Zou, Zhiming Shi, Qichi Le, Mingxing Zhang, Andrej Atrens
Summary: In this study, we investigated the electrochemical properties and discharge performance of La-rich Mischmetal modified Mg-2Zn as candidate anode materials for the Mg-air primary battery. The experimental results showed that alloying introduced tiny second-phase particles, which improved the discharge voltage and capacity, while reducing self-corrosion and suppressing the anodic hydrogen reaction.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Xiaoqiang Li, Qichi Le, Chenglu Hu, Tong Wang, Wenxin Hu, Lei Bao, Ping Wang, Dandan Li, Xiong Zhou
Summary: The LAZ532 alloy reinforced with Al3La phase in-situ precipitated shows outstanding quasi-superplasticity during hot tensile deformation. The mechanical properties of the composite change with the increase of deformation temperature or the decrease of strain rate. The deformation behavior of the composite is dominated by a synergetic mechanism involving GBS, DDRX, and intragranular slip.
MATERIALS CHARACTERIZATION
(2022)
Article
Energy & Fuels
Qi Zou, Qichi Le, Yonghui Jia, Xingrui Chen, Chunyan Ban, Henan Wang, Zhaoyang Yin, Liang Ren, Tong Wang, Yongjian Zhang
Summary: In this study, Ba micro-alloying was used to enhance the anode properties of Mg-6Al alloy in the Mg-air primary battery. Ba micro-alloying improved corrosion resistance and increased discharge capacity and anode efficiency. The benefits of Ba micro-alloying include grain refinement, inhibition of hydrogen evolution reaction, and improved hydrogen absorption capacity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Xingrui Chen, Andrej Atrens
Summary: This paper investigates the energy loss mechanisms of Mg-based anodes and proposes a new evaluation indicator, the apparent Mg valence. The relationship between the apparent Mg valence and the anodic efficiency is elucidated. The paper also reviews the discharge properties of current Mg anodes and suggests development strategies for advanced Mg anodes in the future.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Crystallography
Jian Hou, Qichi Le, Xingrui Chen, Wenyi Hu, Fangkun Ning, Ruizhen Guo, Xiaoqiang Yu, Li Fu
Summary: The secondary cooling of AZ80 during DC casting was studied through experiments with different parameters. A series of experimental equipment was designed to simulate the secondary cooling process. The experimental results were analyzed and the empirical formulas were modified. The accuracy of the model was verified by comparing the results of numerical simulation and experiments.
Article
Materials Science, Multidisciplinary
Zhaoyang Yin, Qichi Le, Xingrui Chen, Yonghui Jia
Summary: This study explores the regulation mechanism of dual-frequency ultrasonic field (DUF) on the solidification structure of magnesium alloys by capturing real-time images of dendrite growth and evolution. It is found that DUF has higher efficiency and grain refinement effect compared to single-frequency ultrasonic field (SUF). By increasing the power share of 15 kHz ultrasound, the grain refinement efficiency of DUF can be further optimized.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Crystallography
Wenyi Hu, Yonghui Jia, Xingrui Chen, Qichi Le, Liang Chen, Songhua Chen
Summary: The study focused on the cooling characteristics of ingots quenched by a water jet, revealing a positive correlation between the thermal conductivity of the alloy and the heat transfer coefficient (HTC), as well as the influence of the ingot surface temperature and surface roughness on HTC.
Article
Electrochemistry
Xingrui Chen, Jeffrey Venezuela, Matthew Dargusch
Summary: This study presents highly pure Mg-Ge alloys that demonstrate exceptional corrosion resistance and discharge performance as anodes for Mg-air batteries. The UHP Mg-0.5Ge exhibits a corrosion rate of 0.15 mm/y, attributed to its low impurity content, restricted hydrogen evolution reaction (HER), and the presence of a protective surface film. The energy density of Mg-0.5Ge is 37% higher than that of UHP Mg at a current density of 10 mA/cm2, owing to its more negative corrosion potential and suppressed non-diffusive evolution (NDE).
ELECTROCHIMICA ACTA
(2023)
Article
Crystallography
Shuang Xu, Zebin Wang, Weitao Jia, Xingrui Chen, Yunyun Dong
Summary: In the process of open-roller conveying, the temperature distribution and evolution of a magnesium alloy plate during air cooling were investigated and analyzed. The study focused on the temperature distribution along both the width and thickness directions under different initial temperatures and plate thicknesses. Two one-dimensional steady-state heat-conduction models were developed in various directions to accurately solve the temperature evolution at different positions during air cooling.
Article
Crystallography
Fangkun Ning, Shuping Kong, Weitao Jia, Xingrui Chen
Summary: Conventional billet rolling is being replaced by twin-roll casting and subsequent unidirectional and cross hot rolling for the production of high-performance magnesium alloy sheets. The microstructural and mechanical response of microalloyed AZ31 under different rolling processes was investigated, and the effects of rolling parameters on the microstructure and mechanical properties were discussed. The study provides insights into optimizing the microstructural and mechanical properties of microalloyed AZ31 in the sheet-rolling process.
Article
Materials Science, Multidisciplinary
Yonghui Jia, Qi Zou, Xingrui Chen, Qichi Le, Yunchang Xin, Qing Liu
Summary: Based on the heat transfer analysis, a novel crystallizer structure for flat ingot electromagnetic DC casting was proposed, allowing independent control of primary cooling and synchronous circumferential control of primary cooling. The design and optimization of inner sleeve material and thickness, as well as the distribution of primary cooling, were carried out. Casting process parameters were studied to achieve crack-free preparation of AZ31B alloy flat ingots of various sizes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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.
