Article
Materials Science, Multidisciplinary
Yongju Kim, Hyung Keun Park, Peyman Asghari-Rad, Jaimyun Jung, Jongun Moon, Hyoung Seop Kim
Summary: The constitutive modeling of CoCrFeMnNi high-entropy alloy at cryogenic and room temperatures has been investigated, showing enhanced ductility and strength at 77K due to the combination of sub-grain structure, twinning, and dislocations. A kinematic constitutive model with a critical twinning stress parameter was constructed to explain the twinning initiation criteria, showing good agreement with experimental data. Different modeling parameters were obtained for each temperature to account for the changing deformation behavior.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jiebo Lu, Wenjie Xin, Tengfei Ma, Xiaohong Wang, Duo Dong, Dongdong Zhu
Summary: The microstructural evolution and dynamic recrystallization behavior of a dual-phase medium entropy alloy were studied under different temperature and strain rate conditions. The initial dual-phase microstructures were characterized and the deformation activation energy was calculated. The appropriate hot deformation parameters were determined based on the hot processing map and deformation microstructure. It was also found that the continuity of dynamic recrystallization depended on the deformation temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jong Woo Choi, Jeong Tae Kim, Sung Hwan Hong, Hae Jin Park, Elyorjon Jumaev, Ki Buem Kim
Summary: This study investigates the effects of Zr contents on the microstructure, phase, mechanical properties, and deformation behavior of CoCuFeNi medium entropy alloy (MEA). The addition of Zr increases the mechanical properties and work-hardening rate of the alloy, and changes the slope of the stress-strain curve through a phase transformation mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Chaowei Zheng, Ying Wang, Junsong Jin, Pan Gong, Xinyun Wang, Hongning Wen, Mao Zhang
Summary: The recrystallization and grain growth behavior of CoCrFeMnNi high-entropy alloys (HEAs) under different plastic deformation conditions were studied. Experimental results showed that pre-deformation promoted the recrystallization rate and degree, while higher deformation resulted in smaller annealed grain size. Severe deformation and low annealing temperature were beneficial for grain refinement. Static recrystallization model and improved grain growth model were developed to predict the recrystallization fraction and annealed grain size under different deformation and annealing conditions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Jihye Kwon, Jungwan Lee, Hyoung Seop Kim
Summary: In this study, a constitutive model for a metastable ferrous medium entropy alloy was developed based on deformation-induced martensitic transformation behavior. The model considered the crystal structure transformation, DIMT kinetics, and the behavior of both the FCC and BCC phases. The model's applicability was verified through comparison with experimental data.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Y. Z. Wang, Z. M. Jiao, G. B. Bian, H. J. Yang, H. W. He, Z. H. Wang, P. K. Liaw, J. W. Qiao
Summary: Face-centered-cubic (FCC) Fe40Mn20Cr20Ni20 high-entropy alloys (HEAs) were fabricated by industrialized vacuum-induction melting and formed a heterogenous structure consisting of a phase distribution and grain size after thermomechanical treatments. Under dynamic tension, the alloy showed simultaneous enhancements in strength and ductility due to the activation of multiple strengthening mechanisms. This study provides new insights for developing high-performance HEAs to resist dynamic impacts.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Yuming Xie, Xiangchen Meng, Ranzhuoluo Zang, Yuexin Chang, Long Wan, Yongxian Huang
Summary: Deformation-driven modification was utilized to exploit the microstructural potential of lightweight high-entropy alloys, achieving high strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Editorial Material
Materials Science, Multidisciplinary
Chang-an Li, Guoliang Qin, Hao Wang, Peihao Geng
Summary: This paper conducted hot compression experiments to analyze the deformation behavior and dynamic recrystallization of FGH96 at high temperature and strain rate conditions. Two strain modified viscoplastic constitutive models were established and proven to accurately reflect the deformation behavior and suitable for numerical simulation of IFW.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Yueming Du, Penghao Pei, Tao Suo, Guozhong Gao
Summary: Compared with unoriented PMMA, oriented PMMA exhibits superior mechanical properties, making it widely used in engineering structures. This study conducted compression experiments of oriented PMMA at different strain rates to establish a constitutive model suitable for oriented PMMA and analyze its mechanical behavior under large deformation. The effects of orientation degree on the mechanical behavior were quantitatively evaluated by comparing unoriented PMMA with PMMA of various orientation degrees. The experiment results demonstrated that the increase in orientation degree enhances the strain hardening behavior of PMMA. The proposed constitutive model accurately predicts the stress-strain behavior of oriented PMMA under different strain rates, indicating its effectiveness in describing the mechanical behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Kangbo Yuan, Xiaohu Yao, Yongqi Yu, Ruifeng Wang, Zishu Chai, Kexuan Zhou, Zhijun Wang
Summary: This research compares the microstructural and dynamic thermomechanical performances of Ni32C-o30Cr10Fe10Al18 (Ni32Al18) eutectic high-entropy alloys (EHEAs) prepared by laser metal deposition (LMD) and arc melting. The LMD samples exhibit lower strength and higher ductility than the arc melted ones. The viscoplastic constitutive model developed considering the microstructural features successfully predicts the dynamic plastic flow behavior of both the LMD and arc melted Ni32Al18 EHEAs over a wide range of temperature. Furthermore, Ni32Al18 EHEA shows superior high-temperature dynamic specific yield strength compared to existing typical superalloys.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Metallurgy & Metallurgical Engineering
Hongbin Zhang, Kang Chen, Zhongwei Wang, Haiping Zhou, Chengcheng Shi, Shengxue Qin, Jie Liu, Tingjun Lv, Jian Xu
Summary: The thermal deformation behavior of CrFeNiSi0.15 MEA was studied through isothermal compression experiments and a modified constitutive equation was obtained. The processing map based on the dynamic material model (DMM) theory was established, revealing the optimal processing parameters for power dissipation efficiency and peak efficiency. The occurrence of dynamic recrystallization (DRX) and twinning during thermal deformation was also observed.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Physical
Furong Cao, Chaofeng Sun, Siyuan Liu, Jinrui Liang, Renjie Liu, Huizhen Guo, Nanpan Guo
Summary: A new Mg-2.76Li-3Al-2.6Zn-0.39Y alloy was successfully fabricated and exhibited maximum elongation to failure at 633K and 1.67 x 10(-4) s(-1) strain rate, with a predominant deformation mechanism of dislocation glide creep controlled by lattice diffusion. Flow stress curves and microstructural examination revealed continuous dynamic recrystallization in most cases, but flow hardening phenomena at specific temperatures and strain rates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ao Fu, Bin Liu, Shenghang Xu, Jing Huang, Yuyang Zhang, Yuankui Cao, Yong Liu
Summary: The precipitation-strengthened FeCoNi MEA fabricated using powder metallurgy techniques exhibits higher strength and moderate ductility, mainly attributed to grain refinement and dislocation pinning.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
S. I. Rao, C. Woodward, B. Akdim, O. N. Senkov, D. Miracle
Summary: An analytic model for substitutional solid solution strengthening in BCC CCAs based on a/2<111> screw dislocation mobility is developed and presented. Different strengthening mechanisms are observed at different temperatures, requiring modifications to existing models to apply to refractory CCAs.
Article
Metallurgy & Metallurgical Engineering
Wei Wei, Chao-long Yuan, Ren-dong Wu, Wei Jiao, Ding-chuan Liang
Summary: The constitutive relationship is crucial for optimizing material processing technology and product quality, requiring precise and generalized constitutive models. The constitutive model of 25 steel considers various thermal-mechanical state variables, covering the full strain range, and characterizes the influence of strain on material constants through polynomial fitting.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Yan Liu, Jinshan Li, Bin Tang, William Yi Wang, Minjie Lai, Lei Zhu, Hongchao Kou
Summary: In this study, the formation mechanism of gamma twins in TiAl alloys was analyzed at the atomic scale using HADDF-STEM. The results revealed the process of growth defects in alpha(2)-platelets transforming into the gamma phase, as well as the rearrangement of defects into gamma and gamma(T) platelets during annealing. This provides significant insights for microstructure control and performance improvement in TiAl alloys.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Guoming Zheng, Bin Tang, Songkuan Zhao, Xiaofei Chen, Lei Zhu, Jinshan Li, William Yi Wang
Summary: This study developed two new microstructures, T-T and T-D structures, in the Ti-43.5Al-4Nb-1Mo-0.18 (TNM) alloy, which significantly improved the alloy's strength and ductility. The formation of deformation twins and the promotion of dynamic recrystallization were found to play important roles in enhancing the plasticity at both room temperature and elevated temperatures.
Article
Materials Science, Ceramics
Gang Yao, William Yi Wang, Chengxiong Zou, Ke Ren, Peixuan Li, Xingyu Gao, Deye Lin, Jun Wang, Shufeng Yang, Yiguang Wang, Haifeng Song, Jinshan Li
Summary: In this study, the effects of transition metals on high-entropy carbides (HECs) were comprehensively investigated using first-principles calculations. The results showed that the introduction of transition metals can improve the lattice parameters and bulk modulus of HECs. Additionally, the proposed power-law-scaled hardness of HECs was validated using electron work function (EWF) analysis, providing a strategy to design advanced HECs with excellent mechanical properties.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Bangqi Yin, Xiangyi Xue, Bin Tang, William Yi Wang, Hongchao Kou, Jinshan Li
Summary: Nanoindentation experiments and crystal plasticity simulations were combined to investigate the deformation behavior and hardness characteristics of the alpha 2 phase in Ti-43.5Al-4Nb-1Mo-0.1B alloy. The results showed a correlation between crystal orientation and hardness, with slip behavior being influenced by Schmid factors.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Fang Hao, Yuxuan Du, William Yi Wang, Youchuan Mao, Junlei Yin, Chengxiong Zou, Haisheng Chen, Kaixuan Wang, Yong Feng, Xianghong Liu, Jinshan Li
Summary: The adiabatic shear characteristics of a recently designed alpha + beta dual-phase Ti alloy were studied at different strain rates. Low angle grain boundaries resist crack and thermal softening formation, while high angle grain boundaries are located in ASBs and their affected areas.
FRONTIERS IN MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Tingting Zhao, William Yi Wang, Yunsong Zhao, Peixuan Li, Ying Zhang, Shufeng Yang, Jinshan Li
Summary: In this study, the effects of S and P atoms on the local phase transformation and embrittlement mechanism in L1(2)-Ni3Al are investigated through first-principles calculations. It is found that both S and P atoms prefer to stay away from fault layers, leading to decreased stability and lattice expansion in L1(2)-Ni3Al. The impurity atoms form strong covalent bonds with their nearest nickel atoms, impairing the normal Ni-Ni bonding strength and inducing embrittlement. Additionally, the impurities cause local structural phase transformation and enhance stacking fault energies.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Engineering, Mechanical
Mengqi Zhang, Jinshan Li, Bin Tang, William Yi Wang, Kaidi Li, Tianlong Zhang, Dong Wang, Hongchao Kou
Summary: A strategy to quantify the second phase strengthening of alpha precipitates in titanium alloys is proposed in this study, which can accurately predict the mechanical performance through crystal plasticity finite element models. Statistical and microstructural factors are introduced to describe the slip resistance variations in the beta matrix, with the concepts of interface-affected zone and interface length density being applied to equiaxed and lamellar microstructures respectively.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Ceramics
Dongxin Gao, Deye Lin, Ke Ren, Shiliang Luan, Guangxu Zhao, William Yi Wang, Jinshan Li, Yiguang Wang
Summary: The oxygen diffusion behaviors through barium-strontium aluminosilicates (BSAS), a typical EBC material, were studied. It was found that interstitial oxygen can stably exist and diffuse through BSAS, forming a complete three-dimensional diffusion network. The bond length of Si-Al-O was found to serve as a measure of interstitial oxygen diffusion in BSAS. The oxygen permeability of BSAS can be decreased by adjusting the proportions of alkaline earth elements present in the structure.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Gang Yao, William-Yi Wang, Pei-Xuan Li, Ke Ren, Jia-Qi Lu, Xing-Yu Gao, De-Ye Lin, Jun Wang, Yi-Guang Wang, Hai-Feng Song, Zi-Kui Liu, Jin-Shan Li
Summary: This study comprehensively investigates the effects of transition metals on high-entropy diborides (HEBs) and reveals the optimization mechanism of hardness based on the lattice distortion and electron contribution of transition metal atoms.
Article
Chemistry, Physical
Peixuan Li, William Yi Wang, Chengxiong Zou, Xingyu Gao, Jun Wang, Xiaoli Fan, Haifeng Song, Jinshan Li
Summary: The study comprehensively investigates the effects of moire-induced lattice distortions on the superlubricity properties of twist MoS2/MoSe2 heterointerfaces through first-principles calculations. The results reveal that lattice distortions lead to localized electronic redistribution and orbital hybridization, resulting in band evolutions. Furthermore, a characteristic moire potential that periodically modulates the sliding energy barrier is observed, and its fluctuation is correlated with changes in interlayer charge density. This study provides essential insights into the nature of moire and superlubricity and paves the way for the development of advanced materials with excellent tribology performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Jiaqi Lu, Fengpei Zhang, William Yi Wang, Gang Yao, Xingyu Gao, Ya Liu, Zhi Zhang, Jun Wang, Yiguang Wang, Xiubing Liang, Haifeng Song, Jinshan Li, Pingxiang Zhang
Summary: Materials descriptors with multivariate, multiphase, and multiscale characteristics have been used to study the composition-processing-structure-property-performance (CPSPP) relationships in advanced materials. This study presents a hybrid data-driven and knowledge-enabled model to explain the composition-property-performance relationships, and applies it to design cost-effective superhard high-entropy diboride ceramics (HEBs). Machine learning and first-principles calculations are used to identify dominant features and validate the model. The results show that hardness is influenced by mean electronegativity, electron work function, and average d valence electrons of composition.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
W. X. Zhang, Y. Z. Chen, L. Zhou, T. T. Zhao, W. Y. Wang, F. Liu, X. X. Huang
Summary: Si is a common alloying element in Al alloys, mainly used to form precipitates and improve castability. In this study, the effect of Si as a solute on work hardening and dislocation behaviors of Al-Si alloys was investigated. It was found that the addition of Si increased the tensile strength and ductility of the alloys, with higher Si concentrations resulting in greater improvements. The enhanced work hardening was attributed to the change in dislocation configuration and the weakening of stacking-fault energy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yan Liu, Jinshan Li, Bin Tang, William Yi Wang, Yudong Chu, Lei Zhu, Weiqing Bi, Xiaofei Chen, Hongchao Kou
Summary: The microstructural evolution and creep behavior of the Ti-43.5Al-4Nb-1Mo-0.1B alloy were studied using SEM and TEM. The alloy with a fully lamellar (FL) microstructure containing the least grain boundary beta(o) phase (GB-beta(o)) exhibited excellent creep resistance. The formation of beta(o) precipitation in (alpha(2)/gamma) lamellae effectively reduced the generation of dislocations and improved creep resistance.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Guoming Zheng, Bin Tang, Songkuan Zhao, Yizhen Xie, William Yi Wang, Jinshan Li, Lei Zhu
Summary: Dislocation slipping and mechanical twinning control the plastic deformation of lamellar micro-structure (LM) in TiAl intermetallics. However, when the interlamellar spacing is reduced to the nanometer scale, the deformation mechanism switches to the development of long-period stacking-ordered (LPSO) structures. The formation of LPSO structures during deformation can result in greater high-temperature yield strength compared to LMs deformed via dislocation gliding or mechanical twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Hongchao Li, Jun Wang, Qingxing Xu, Lingrui Dai, Weijie Liao, Ruihao Yuan, William Yi Wang, Jinshan Li
Summary: Using a strategy combining machine learning with precipitation strengthening mechanism, we synthesized an alloy Al5Ti8Co40Fe7Ni40 with a yield strength approaching 1.15 GPa, 10% higher than the best value of the existing AlTiCoCrFeNi HEAs/MEAs strengthened by L12-type nanoprecipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Tongyu Han, Haifeng Shi, Yigang Chen
Summary: In this study, a novel S-scheme system was built by combining CuO with BiVO4 to activate PMS for antibiotic degradation. The system exhibited excellent visible light absorption performance and remarkable charge separation ability, suggesting its potential application in enhancing PMS activation and purifying antibiotics in water.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Linlin Zhou, Tao Yang, Chunyu Guo, Kang Wang, Enhui Wang, Laipan Zhu, Hailong Wang, Sheng Cao, Kuo-Chih Chou, Xinmei Hou
Summary: Piezoelectric silicon carbide (SiC) has been considered for various applications due to its superior properties. However, its brittleness and unsatisfactory piezoelectric response have limited its use. In this study, PVDF/6H-SiC composite fiber films were fabricated and used for assembling high-performance energy harvesters and sensors. The results showed significant improvements in piezoelectric response and sensitivity compared to pure PVDF films. First-principles calculation and finite element analysis confirmed the effect of SiC nanoparticles on the composite film.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Y. F. An, X. P. Chen, L. Mei, P. Ren, D. Wei, W. Q. Cao
Summary: This study systematically investigates the precipitation sequence of Fe-28Mn-11Al-1C-5Ni austenitic low-density steel and its influence on mechanical properties. The results reveal the transformation pathway of kappa' -carbides and B2 particles under different aging conditions. This research is meaningful for guiding the design of new generation dual-nano precipitation austenitic lightweight steel.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Lei Yang, Tingkai Zhao, Abdul Jalil, Huijun Luo, Tao Jiang, Yuan Shu, Yazhou Yin, Weiyu Jia
Summary: In this study, a strategy utilizing oxygen vacancy concentration modulation was used to successfully grow semiconducting single-walled carbon nanotubes (s-SWCNTs) with narrow diameters. The Fe0.01Mg0.99O/CeO2(3) catalyst was employed to provide oxygen vacancies, allowing for selective etching of chemically active carbon nanotube caps during the growth process. The optimized conditions resulted in high purity s-SWCNTs with uniform diameters.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Letter
Materials Science, Multidisciplinary
Lingjun Xu, Pruch Kijkla, Sith Kumseranee, Suchada Punpruk, Tingyue Gu
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
X. P. Hu, Y. H. Zhang, C. B. Liu, H. Z. Cui
Summary: In this study, a novel polyaniline (PANI) nanosheet with barrier and passivation functions was synthesized, and its interaction with polymeric resin was enhanced by polydopamine (PDA) wrapping. The composite coating with incorporated PANI@PDA nanosheets showed improved corrosion resistance by providing a longer penetration path and inducing the formation of a passivation film on the metal substrate.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Yan Zhang, Xuehua Liu, Zhiqiang Guo, Chenyu Jia, Feng Lu, Zirui Jia, Guanglei Wu
Summary: In this study, a self-assembling-etching-anchoring growth method was proposed to prepare MXene@Co electromagnetic wave absorbing materials. The hollow structure design and surface anchored growth of magnetic Co particles significantly enhanced the wave absorption performance of the absorber.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Yajing Ren, Yunfeng Li, Guixu Pan, Ning Wang, Yan Xing, Zhenyi Zhang
Summary: Photocatalytic technology utilizing sunlight as a driving force can convert solar energy into other energy sources for storage and use. CdS, as a typical reducing semiconductor, has attracted attention in photocatalysis due to its suitable bandgap and strong reducing ability. However, the photocatalytic performance of CdS is limited by carrier recombination and photocorrosion. Therefore, CdS has been widely developed as a reducing photocatalyst in constructing S-scheme heterojunctions to overcome these limitations.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Diao-Feng Li, Chun-Guang Bai, Zhi-Qiang Zhang, Hui-Bo Zhang, Nan Li, Jian Zhao
Summary: A novel compliant spinal fixation based on compliant mechanisms is designed to effectively reduce stress-shielding effect and adjacent segment degeneration (ASD), but it requires high properties of the used materials. Bulk metallic glasses (BMGs), as young biomaterials, demonstrate excellent comprehensive properties, making them attractive for compliant spinal fixation. In this study, the large deflection deformation behaviors of Zr61Ti2Cu25Al12 (at.%, ZT1) BMG beam were systematically investigated, including elastic, yielding, and plastic deformations. The theoretical nonlinear analytical solution curve predicts the load-deflection relation within the elastic deformation regime and assists in capturing the yielding event, serving as a powerful design tool for engineers. To accurately capture the beginning of the yielding event in biomedical implant applications, the concept of bending proof strength (sigma p,0.05%) with tiny permanent strain of 0.05% was proposed and determined, which is significant for setting the allowable operating limits of the basic flexible elements. The plastic deformation driven by the bending moment can be classified into two stages: the initial stage characterized by nucleation and intense interaction of shear bands, and the second stage dominated by the progressive propagation of shear bands and emergence of shear offsets. The plasticity of BMG beam structures depends on the BMG's inherent plastic zone size (rp), and when the half beam thickness is less than that of rp, the plastic deformation of BMGs behaves in a stable manner, effectively serving as the margin of safety.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Yanlin Li, Zhu Ma, Shanyue Hou, Qianyu Liu, Guangyuan Yan, Xiaoshan Li, Tangjie Yu, Zhuowei Du, Junbo Yang, Yi Chen, Wei You, Qiang Yang, Yan Xiang, Shufang Tang, Xuelin Yue, Meng Zhang, Wenfeng Zhang, Jian Yu, Yuelong Huang, Jiale Xie, Chun Tang, Yaohua Mai, Kuan Sun
Summary: This paper provides an overview of hydrogen progress from solar energy to solar cells, with a focus on photovoltaic-electrolysis and photoelectrochemical/photovoltaic systems. Both systems have achieved a solar-to-hydrogen efficiency of over 10% and show great potential for large-scale application. The challenges and opportunities in this field, including configuration design, electrode materials, and performance evaluation, are summarized. The paper also analyzes and presents perspectives on the potential commercial application and further scientific research for the development of solar-to-hydrogen.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
L. K. Huang, F. Liu, M. X. Huang
Summary: The bainite transformation in medium Mn steels has been experimentally and theoretically studied, and it has been found that the transformation kinetics is slow. However, the introduction of dislocations can significantly accelerate the transformation rate. A new "carbon depletion mechanism" is proposed to explain the role of dislocations in the acceleration of bainite transformation, and a physical model is developed to quantitatively understand the kinetics of bainite transformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Jing Qiao, Lutong Li, Jiurong Liu, Na Wu, Wei Liu, Fan Wu, Zhihui Zeng
Summary: Rare earth plays a crucial role in electromagnetic wave absorption materials, and the strategies of doping rare earth elements and constructing rare earth oxide composites are important for the fabrication of high-efficiency electromagnetic wave absorption materials. This review provides a comprehensive summary of the research background, classification, features, progress, and future development of rare earth electromagnetic wave absorption materials, offering guidance for future development.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Jiacheng Ge, Yao Gu, Zhongzheng Yao, Sinan Liu, Huiqiang Ying, Chenyu Lu, Zhenduo Wu, Yang Ren, Jun-ichi Suzuki, Zhenhua Xie, Yubin Ke, Jianrong Zeng, He Zhu, Song Tang, Xun-Li Wang, Si Lan
Summary: Fe-based metallic glasses are promising materials in the fields of advanced magnetism and sensors. This study proposes a novel approach to tailor the amorphous structure through liquid-liquid phase transition, and provides insights into the correlation between structural disorder and magnetic order. The results show that the liquid-liquid phase transition can induce more locally ordered nanodomains, leading to stronger exchange interactions and increased saturation magnetization. The increased local heterogeneity also enhances magnetic anisotropy, resulting in a better stress-impedance effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Hao Yu, Xin Kou, Xueqing Zuo, Ding Xi, Haijun Guan, Pengfei Yin, Lijia Xu, Yongpeng Zhao
Summary: Metal-organic frameworks derived composites are promising EMW absorbers. Cation substitution can improve their absorption performance by regulating morphology and atomic space occupation. However, the mechanisms of how cation substitution affects EMW absorption performance are still not well understood. In this study, imidazolic MOFs were fabricated and tailored by cation substitution strategy to prepare porous composites. The samples showed optimal reflection loss and effective absorption bandwidth values under low filling rate and thin thickness conditions. The intercoupling between multiple atoms and the porous structure introduced by cation substitution contribute to the improved absorption performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Lina Wang, Peiyi Yan, Huairui Chen, Zhuo Li, Shu Jin, Xiaoxiang Xu, Jun Qian
Summary: The narrow bandgap semiconductor MgIn2S4 has been grown onto In2O3 nanofibers using an in situ growing method. The resulting MgIn2S4-In2O3 hybrid nanofibers exhibit strong visible light absorption and intimate MgIn2S4/In2O3 heterointerfaces, leading to highly efficient photocatalytic disinfection of Escherichia coli.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)