Article
Nanoscience & Nanotechnology
Qing Wang, Jincan Han, Yufeng Liu, Zhongwei Zhang, Chuang Dong, Peter K. Liaw
Summary: A new body-centered-cubic (BCC)-based refractory high entropy alloy was developed, with coherent precipitation observed. Cuboidal nanoprecipitates were formed in an 873 K-aged alloy, with a moderate lattice misfit. The coexistence of B2 and Zr5Al3 phases was found, with deteriorated coherency observed at higher aging temperatures. Segregations of Nb/Ta and Ti/Zr led to the presence of two kinds of BCC phases.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
He Qin, Guangyu Yang, Tong Bai, Shuxia Ouyang, Wanqi Jie
Summary: The study reveals that the tensile creep behavior of Mg-10Gd-0.4Zr alloy is influenced by the faster transformation of the initial beta' phase to beta(1) phase and wider precipitate-free zones under high stress conditions, leading to a decrease in creep resistance of the alloy.
Article
Materials Science, Multidisciplinary
Hyun Ji Kim, Young Min Kim, Jun Ho Bae, Jonghun Yoon, Sung Hyuk Park
Summary: In this study, a new alloy, AZXW9100, with high corrosion and ignition resistance characteristics is developed. The aging hardening and Mg17Al12 precipitation behavior of this alloy are investigated and compared with a commercial AZ91 counterpart. The results show that adding small amounts of Ca and Y to AZ91 alloy significantly alters the precipitation behavior during aging.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Chunxiang Chen, Qinghuan Huo, Zhirou Zhang, Yuxiu Zhang, Jiao Tang, Kaiyu Li, Jijun Ma, Xuyue Yang
Summary: In heat-resistant Mg-Gd based alloys, the presence of static precipitated beta ' phases and directly formed PFZs were found to enhance the creep resistance of the alloy. The dominant creep mechanisms, including twinning and cross-slip, were also identified as key factors contributing to the improved creep resistance of the alloy. The study highlights the importance of precipitate origin and PFZ development in understanding and improving the creep properties of Mg-Gd based alloys at medium to high temperatures.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Zuo Xu, Lixin Huang, Meng Li, Zhihua Zhu, Chunhai Liu
Summary: The influence of Mg17Al12 phase morphology on the mechanical properties of AZ80 magnesium alloy has been studied. The results show that the morphology of Mg17Al12 phase varies with aging temperature, which affects the strength and elongation of the alloy.
Article
Nanoscience & Nanotechnology
Xinsheng Huang, Mingzhe Bian, Yasumasa Chino
Summary: The effects of aging precipitation on microstructure, deep drawing formability, and tensile properties of Mg-6Al-1Zn alloy sheets were investigated. It was found that aging at high temperature significantly improved the deep drawability, resulting in an increased limiting drawing ratio. This improvement can be attributed to the prevention of cracking at the edge of the drawn cup by restricting the growth of tensile twins and basal slip through aging precipitation.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Kai Chen, Qunbo Fan, Lin Yang, Shun Xu, Jiahao Yao, Yu Gao, Wei Lei
Summary: A novel metastable beta-type Ti-6Mo-3.5Cr-1Zr alloy is designed using d-electrons theory to introduce diverse phase transformations. Stress-induced omega (SI omega) phase transformation dominates the initial deformation, while the SI omega bands are transformed to alpha+beta phase as the strain increases. The sequential mechanism associated with beta -> SI omega ->alpha+beta is first reported in titanium alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
N. B. Zhang, C. X. Zhang, B. Li, Y. F. Sun, L. Z. Chen, Y. Cai, X. J. Zhao, Y. Tang, L. Lu, S. N. Luo
Summary: Plate impact experiments are conducted on a metastable dual-phase high-entropy alloy (HEA) Cr10Mn30Fe50Co10 with different matrix grain sizes and phase fractions. Multiple deformation mechanisms are observed, including dislocation slip and stacking fault in the face-center cubic (FCC) phase, dislocation slip and deformation twinning in the hexagonal close-packed (HCP) phase, and the FCC to HCP transformation. Damage during spallation is ductile in nature, with micro-voids preferentially nucleating at high-angle grain boundaries within the FCC phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Li Xie, Shujian Liu, Mingtao He, Jiangtao Wang, Jian Wang, Yalin Lu, Wenting Xu, Chunfa Yao
Summary: The growth and strain evolution of columnar grains in a Fe-0.5%Mn alloy subjected to hot rolling, cold rolling, and austenite-to-ferrite transformation were studied. Different microstructures were formed during hot rolling, resulting in unique three-layer sandwiched microstructures with varying grain orientations and spread values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Hongbo Xie, Xiaobo Zhao, Jingchun Jiang, Junyuan Bai, Shanshan Li, Hucheng Pan, Xueyong Pang, Hongxiao Li, Yuping Ren, Gaowu Qin
Summary: This study revealed the diffusional-displacive dominated formation mechanism of beta(1) phase in Mg-Sm alloys using aberration-corrected scanning transmission electron microscopy observation and first-principles calculations. Shear and atomic shuffling can transform hexagonal close-packed structure to face-centered-cubic structure, and beta(1) phase formation can also be realized from other intermediate phases through solute diffusion and shuffle transformation. A new habit plane on the non-close-packed plane has been identified, enriching the diffusional-displacive transformations.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Liang Cheng, Shuaijin Zhang, Guang Yang, Hongchao Kou, Emmanuel Bouzy
Summary: This study achieved microstructure and mechanical properties adjustment of a beta-solidifying TiAl alloy through martensitic transformation, resulting in two different microstructures with distinct mechanical properties, suitable for high temperature service and thermomechanical processing, respectively.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Lipeng Yan, Quanan Li, Limin Zhu, Xiaoya Chen, Laidong Yang, Jun Chen, Wuhui Li
Summary: The study investigated the tensile properties and microstructure changes of the GW84 alloy during hot extrusion at different temperatures. It was found that the alloy exhibited excellent high temperature mechanical properties, with the ultimate tensile strength peaking at 393 MPa at 250 degrees C. The microstructure of the alloy underwent significant changes during the high temperature tensile process, including phase transformations and increased precipitation at higher temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Xiongpeng Zhou, Hongge Yan, Jihua Chen, Weijun Xia, Bin Su, Xinyu Li, Wensen Huang, Min Song
Summary: By introducing beta(1)' (MgZn2) precipitates through solution treatment and subsequent aging, a new approach has been discovered to improve the damping capacity and mechanical properties of ZK60 magnesium alloy. The coherent orientation relationships between the beta(1)' phase and the a-Mg matrix, as well as the shearing or bypassing of dislocations on the beta(1)' precipitates depending on their sizes and spacing, contribute to the synchronous improvement in mechanical and damping properties of the alloy. The modified Granato-Lucke (G-L) model presented in this work analyzes the favorable damping capacity of the aged ZK60 alloy, where the interaction between the beta(1)' precipitates and the mobile dislocations serves as a new source of energy dissipation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Zhuohui Zeng, Xian Chen
Summary: An experimental platform combining DSC with DInM was established, and experiments on an alloy were conducted to confirm the agreement between phase formation events observed by DInM and heat exchange profile characterized by DSC. Through quantitative analysis, it was discovered that there is a linear scaling law between twin evolution time and fineness.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Widad Ayadh, Benoit Denand, Ahmed Halkoum, Pascal Boulet, Mohamed Sennour, Jerome Delfosse, Pierre Sallot, Vladimir A. Esin
Summary: Isothermal heat treatments at 876 and 780 degrees C were performed on a Ti2AlNb alloy with varying fraction of a2 phase to study the influence of prior a2 phase on O-phase formation kinetics in /3 matrix. The kinetics of phase transformations were investigated using electric resistivity measurements, scanning and transmission electron microscopy, energy dispersive X-ray spectrometry, and quantitative X-ray diffraction. The results showed that the effect of a2 phase on O-phase formation depends on the transformation temperature. At 876 degrees C, prior a2 precipitates led to slower O-phase formation compared to the a2 free alloy, while at 780 degrees C, the presence of a2 phase accelerated the kinetics of O-phase formation. Diffusion and diffusionless character of O-phase formation in /3 matrix with and without prior a2 were observed at 876 and 780 degrees C, respectively.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.