Article
Materials Science, Multidisciplinary
X. B. Qiu, X. L. Bian, D. Sopu, Y. . X. Gao, J. Yi, Y. . D. Jia, G. Wang
Summary: This study systematically investigates the structural changes and mechanical properties of Zr61Ti2Cu25-Al12 metallic glass treated with triaxial compression and cryogenic thermal cycling. The research reveals inconsistencies between the structure evolution based on relaxation enthalpy and diffraction peak position changes. Vickers hardness mapping demonstrates that residual stresses may be imparted and stored in the highly deformed metallic glass sample, explaining the aforementioned inconsistencies. As thermal cycling progresses, the stored residual stresses relieve and compete with the structure softening from the thermal cycling process, resulting in tunable rejuvenation behavior. A plausible model is proposed to correlate rejuvenation and thermal-mechanical protocols. This work emphasizes the vital role of residual stress in metallic glass rejuvenation and its significance for the design of metallic glasses with desired mechanical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Huimin Guan, Mingcan Li
Summary: The plasticity of Fe80P13C7 bulk amorphous alloy can be significantly enhanced by cryogenic thermal cycling treatment, which is attributed to the generation of more disordered high-energy states in the structure, facilitating the formation of multiple shear bands.
Article
Chemistry, Physical
Mehdi Rouhani, Jonathan Hobley, Franklin Chau-Nan Hong, Yeau-Ren Jeng
Summary: This study explores the mechanism of how doping enhances the thermal stability of DLC films, showing that increasing the Si content can maximize the thermal stability of the films, while also revealing the correlation between Si doping and stability of mechanical properties at elevated temperatures.
Article
Chemistry, Multidisciplinary
Julian Pries, Christian Stenz, Lisa Schaefer, Alexander Gutsche, Shuai Wei, Pierre Lucas, Matthias Wuttig
Summary: Phase change materials play a crucial role in artificial intelligence technologies, but the resistance drift phenomenon hinders the commercial implementation of multi-level data storage schemes. Research has elucidated the physical process of resistance drift and proposed a glass dynamics model to predict and reduce drift.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Mechanical
Xiulin Ji, Mayur Pole, Thomas Ho, Mst Alpona Akhtar, Mangesh Pantawane, Sundeep Mukherjee, Narendra B. Dahotre
Summary: Cryogenic thermal cycling was found to significantly improve the tribological properties of Cu46Zr47Al7 amorphous alloy, with the lowest COF and wear rate observed. On the other hand, the enhancement in tribological behavior of Cu45Zr47Al7Ti1 amorphous alloy was relatively minor. Rejuvenation led to an increase in hardness and elastic modulus, with wear mechanisms identified to be adhesive, fatigue, and oxidative wear. The results suggest that rejuvenation could effectively enhance the tribological performance of metallic glasses, whether in bulk alloys or coatings.
Article
Green & Sustainable Science & Technology
Bingbing Zhang, Fei Song, Weiguang Li
Summary: A series of triaxial compression tests were conducted to investigate the stress-strain relationships of gravels, road surface milling materials, and surface-base milling mixtures. The study predicted and compared the strength and deformation of geocell-reinforced surface milling materials and geocell-encased surface-base milling mixtures with those of gravels. The effects of geocell pocket size, tensile stiffness, and peak internal frictional angle on stress-strain responses were examined.
Article
Materials Science, Multidisciplinary
Z. Msetra, N. Khitouni, J. J. Sunol, M. Khitouni, M. Chemingui
Summary: An amorphous Co60Fe18Ta8B14 powdered alloy was successfully prepared by mechanical alloying, with XRD and SEM confirming its characteristics and unique crystallization process and properties.
Article
Materials Science, Multidisciplinary
Xia Li, Yihao Wang, Lu Wang, Mingqin Xu, Jiaojiao Yi
Summary: The thermal stability of a composition Zr60Co27Al13 was analyzed under both a monolithic amorphous state and symbiotic primary crystal-glass state. It was found that the symbiotic metallic glass is more stable than the monolithic metallic glass due to the consumption of short-range order clusters, relaxation in atomic dimensions, and more homogenous elemental distribution in the residual amorphous regions. This research may contribute to the development of metallic glasses with higher thermal stability.
Article
Engineering, Geological
Hongyu Wang, Arcady Dyskin, Elena Pasternak, Phil Dight
Summary: Reliable and low-cost in situ stress measurement is crucial for the design and operation of underground excavations. Deformation rate analysis (DRA) is a method that determines rock memory stress based on cyclic, non-destructive uniaxial compression tests on rock cores. However, this method may not be suitable for rock cores with low compressive strength. To address this issue, the linear triaxial deformation rate analysis (LDRA) method is proposed, which involves performing triaxial DRA tests with different confining stresses and reconstructing the pre-stress using linear regression.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Sailong Zhang, Jingyu Zhou, Jinhui Wang, Bo Shi, Peipeng Jin
Summary: This study investigates the effects of Cryogenic thermal cycling (CTC) treatment on the mechanical properties and thermal responses of as-cast and as-deformed Zr-based bulk metallic glasses (BMGs). The results show that the deformed BMG is more sensitive to CTC treatment, and its softening effect increases first and then saturates with the number of cycles.
Article
Chemistry, Multidisciplinary
Yu-Tian Zhang, Yun-Peng Wang, Xianli Zhang, Yu-Yang Zhang, Shixuan Du, Sokrates T. Pantelides
Summary: This paper addresses the question of the structure of single-atom-thick amorphous monolayers, and finds that the structure of elemental amorphous graphene and binary monolayer amorphous BN is different from previously debated options. The implications for other nonelemental 2D and bulk amorphous materials are also discussed.
Article
Construction & Building Technology
Prodip Kumar Sarkar, Nilanjan Mitra
Summary: This study examines the molecular deformation response of the mineral analogue to hydrated cement paste under uni/tri-axial loading using empirical and reactive force fields. A comparison of responses using different force fields is conducted, with a focus on the evolution of atomic environment during deformation. Key observations on the application of different force fields for studying the material's large deformation behavior are highlighted.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Computer Science, Interdisciplinary Applications
Yang Li, Masahide Otsubo, Reiko Kuwano
Summary: This study used the discrete element method to simulate triaxial compression experiments with spherical particles. The study found that V-p is influenced by the major principal stress and the coordination number in the vertical direction, while V-s is more affected by the geometric mean stress and the mean coordination number. The wave velocity ratio V-p/V-s is linearly correlated with fabric anisotropy, allowing for prediction of microscopic fabric changes from macroscopic wave velocity values.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Geochemistry & Geophysics
Rui Yang, Lv Jiakun, Bo Zhou, Depeng Ma
Summary: The mechanical response characteristics and occurrence mechanism of coal and rock under unloading conditions are crucial for evaluating the stability and control of rock excavation in engineering. Fractal characteristics of coal and rock acoustic emission time series were analyzed to predict the unloading failure of coal and rock. In addition, the HURST index was calculated to determine the unloading and fracture process of rock samples.
Article
Materials Science, Ceramics
Leonardo Resende, Naira M. Balzaretti, Altair S. Pereira, Marcos A. Z. Vasconcellos, Silvio Buchner
Summary: High-density lithium disilicate (LS2) vitreous systems were produced by melting and quenching under high pressure (7.7 GPa) following two different experimental routes. The samples were characterized by X-ray diffraction, differential thermal analysis, and instrumented ultramicro hardness measurements. Glass produced under high pressure exhibited higher hardness and elastic modulus compared to the reference glass, indicating irreversible densification effect induced by high-pressure processing.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Multidisciplinary Sciences
J. Pan, Yu. P. Ivanov, W. H. Zhou, Y. Li, A. L. Greer
Article
Chemistry, Physical
Weihua Zhou, Yonghua Meng, Fenghui Duan, Wei Huang, Jiahao Yao, Jie Pan, Yinxiao Wang, Yi Li
Summary: The study found that the formation of the tau(3) phase (Zr50Cu29Ni2Al19 intermetallics) is triggered when the oxygen level reaches 350 ppm, with oxygen mainly concentrated in this phase. Additionally, the lattice parameter of the tau(3) phase increases with the oxygen content.
Article
Materials Science, Multidisciplinary
W. H. Zhou, F. H. Duan, Y. H. Meng, C. C. Zheng, H. M. Chen, A. G. Huang, Y. X. Wang, Y. Li
Summary: The study systematically investigated the evolution of microstructure and mechanical properties of Zr-based bulk metallic glasses with varying oxygen content. Results showed that with increasing oxygen content, compressive plasticity decreased slightly before plunging drastically, revealing a threshold oxygen content level for ductile-brittle transition at 3500 at. ppm. The embrittlement at high oxygen content was closely related to changes in microstructure.
Article
Nanoscience & Nanotechnology
W. H. Zhou, N. T. Panagiotopoulos, A. L. Greer, Y. Li
Summary: A rejuvenated Zr-based bulk metallic glass was tested in tension and exhibited strain-hardening behavior. The plastic strain at failure reached 0.9%, which is considered high for metallic glasses. Comparisons with other alloys showed that the hardening rate of the metallic glass decreases rapidly with increasing strain, limiting its tensile plastic strain to approximately 1%. Rejuvenation delayed early catastrophic failure and resulted in changes in the fracture surface morphology.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
K. W. Shao, W. H. Zhou, K. Gao, X. G. Zhu, P. Jia, Y. Li
Summary: Catastrophic brittle failure limits the application of bulk metallic glasses (BMGs), but the brittle La69Co17Al14 BMG shows significant compressive plasticity when compressed under constrained conditions. This study systematically investigates the compressive plasticity of the BMG by decreasing the aspect ratio, and finds that the brittle-ductile transition occurs at an aspect ratio of 0.36. Furthermore, as the plasticity increases, the hardness initially decreases and then increases, while the relaxation enthalpy of the BMG's structure monotonically increases.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Y. H. Meng, S. Y. Zhang, W. H. Zhou, J. H. Yao, S. N. Liu, S. Lan, Y. Li
Summary: Structural relaxation and subsequent rejuvenation through thermal treatment can improve the plasticity and fracture toughness of metallic glasses. The recovery of loosely packed regions in the atomic structure during annealing contributes to the observed rejuvenation. Tailoring the mechanical properties of metallic glasses can be achieved by controlling the annealing and thermal treatment conditions.
Review
Materials Science, Multidisciplinary
K. Gao, X. G. Zhu, L. Chen, W. H. Li, X. Xu, B. T. Pan, W. R. Li, W. H. Zhou, L. Li, W. Huang, Y. Li
Summary: This paper presents the commercial application of bulk metallic glasses (BMGs), including suitable alloys for actual products, the advantages of BMGs processing techniques over existing techniques and materials, and typical examples of products in recent years. The future directions of BMGs industrialization are also discussed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
S. Y. Zhang, W. H. Zhou, L. J. Song, J. T. Huo, J. H. Yao, J. Q. Wang, Y. Li
Summary: The mechanical properties of amorphous materials are closely related to their energy states. A higher energy state corresponds to larger plasticity and lower hardness. In this study, the correlation between the enthalpy and hardness of rejuvenated Au-based metallic glasses was explored. It was found that a rejuvenated metallic glass with a high-energy state showed a different trend in hardness variation, with hardness increasing instead of decreasing with increasing enthalpy when the enthalpy was higher than an intermediate value. The reactivations of 13- and alpha-relaxation both contributed to an increase in enthalpy but had opposite effects on hardness. This study provides new insights into designing metallic glasses with excellent mechanical properties by rejuvenating relaxed metallic glasses through the farthest reactivation of 13-relaxation and avoiding reactivation of alpha-relaxation.
SCRIPTA MATERIALIA
(2023)
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.
