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Tailoring mechanical heterogeneity,nanoscale creep deformation and optical properties of nanostructured Zr-based metallic glass

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Rare Metals 2023年第10期42卷 3430-3442页

作者： Jing-Xian Cui Qiang Luo Zheng-Guo Zhang Jing-Tao Zhu bao-long shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China School of Physics Science and Engineering Tongji UniversityShanghai200092China

Metallic glasses are spatially heterogeneous at the nanometer ***,the effects of external excitation on their structural and mechanical heterogeneity and the correlation to their properties are still ***,atomic force microscopy(AFM) and high-resolution transmis sion elec tron micro scopy(HRTEM) were carried out to explore the effects of cryogenic thermal cycling(CTC) on mechanical/structural heterogeneity,nano sc ale creep deformation and optical properties of nano structured metallic glass thin films(MGTFs).The results indicate that CTC treatment alters the distribution fluctuations of hardness/modulus and energy dissipation and results in an increase-then-decrease variation in mechanical *** applying Maxwell-Voigt model,it can be shown that CTC treatment results in a remarkable activation of more defects with longer relaxation time in soft regions but has only a slight effect on defects in hard *** addition,CTC treatment increases the transition time from primary-state stage to steady-state stage during creep *** enhanced optical reflectivity of the MGTFs after 15 thermal cycles can be attributed to increased aggregation of Cu and Ni *** results of this study shed new light on understanding mechanical/structural heterogeneity and its influence on nanoscale creep deformation and optical characteristics of nanostructured MGTFs,and facilitate the design of high-performance nanostructured MGTFs.

关键词： Metallic glass thin films(MGTFs) Cryogenic thermal cycling(CTC) Structural heterogeneity Mechanical and creep properties Optical characteristics

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Universality of slip avalanches in a ductile Fe-based bulk metallic glass

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Journal of Iron and Steel Research International 2017年第4期24卷 366-371页

作者： Jiao-jiao Li Jun-wei Qiao Karin A.Dahmen Wei-ming Yang bao-long shen Ming-wei Chen Laboratory of Applied Physics and Mechanics of Advanced Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024ShanxiChina Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina Department of Physics University of Illinois at Urbana-ChampaignIllinois 61801USA State Key Laboratory for Geomechanics and Deep Underground Engineering School of Mechanics and Civil EngineeringChina University of Mining and TechnologyXuzhou 221116JiangsuChina School of Materials Science and Engineering Southeast UniversityNanjing 211189JiangsuChina Advanced Institute for Materials Research Tohoku UniversitySendal 980-8577Japan

Intermittent serrated flows of a novel ductile Fe60Ni20P13C7 bulk metallic glass（BMG）at variant strain rates were investigated by statistics *** and clutter distribution of slip-avalanche magnitudes are displayed during stable plastic flows at strain rates of 2×10-4 s-1 and 5×10-5 s-1,respectively,which means that serration behavior depends on the strain ***,the remarkable agreement between measured slip-avalanche magnitudes and the scaling behavior,i.e.a universal complementary cumulative distribution function（CCDF）predicted by mean-field theory（MFT）model,indicates that the plasticity of the present Fe-based BMGs can be tuned by imposed strain rates：Smax^6）ε-λ.This tuned plasticity is elucidated with expended free-volume ***,the scaling behavior of serrated flows for other strain rates can be predicted as well.

关键词： Bulk metallic glass Slip avalanche Plasticity Mean-field theory model Strain rate

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First-principle prediction of structural and mechanical properties in NbMoTaWRe_(x) refractory high-entropy alloys with experimental validation

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Rare Metals 2022年第10期41卷 3343-3350页

作者： Jin-Yong Mo Yi-Xing Wan Zhi-Bin Zhang Xin Wang Xiao-Qing Li bao-long shen Xiu-Bing Liang School of Chemistry and Chemical Engineering China University of Mining and TechnologyXuzhou221116China Defense Innovation Institute Academy of Military ScienceBeijing100071China Department of Materials Science and Engineering KTH Royal Institute of Technology10044StockholmSweden School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China

In this work,the effect of Re alloying on the phase composition,crystal structure,and mechanical properties of NbMoTaWRe_(x) (x=0,0.27,0.57,0.92,1.33) refractory high-entropy alloys (RHEAs) were systematically investigated by combining the calculation of phase diagram(CALPHAD),first-principle calculations and *** theoretical predictions showed good consistency with the experimental *** the increase in Re content,the theoretical results showed that all considered alloys have a single body-centered cubic (bcc) structure and the lattice constant and ductility were decreased,while the elastic moduli and hardness were *** avoid extreme brittleness,a strategic suggestion was given for the design of Re-containing RHEAs in the future.

关键词： alloys alloying entropy

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Synthesis and Crystal Structure of [（ArO）2Sm-（OPPh3）(μ-OH)]2（ArO = 2,6-~tBu-4-Me-C6H2O）

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Chinese Journal of Structural Chemistry 2003年第2期 143-146页

作者： YAO Ying-Ming ZHANG Ke-Da YU long-bao shen Qi② LEI Yu-Ye (Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China) SUN Jie (Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, Shanghai 200032, China)

The title complex, [(ArO)2Sm(OPPh3)(m-OH)]2 (ArO = 2,6-tBu2-4-Me-C6H2O), was obtained by the hydrolysis reaction of divalent samarium aryloxide, Sm(ArO)2(THF)4, in the presence of triphenylphosphine oxide (OPPh3) in toluene. Crystal data: C96H124O8P2Sm2, Mr = 1768.77, monoclinic, space group P21/n, a = 15.276(6), b = 19.406(9), c = 19.320(7) ? b = 108.59(2), V = 5428(3) 3, Z = 2, Dc = 1.081 g/cm3, F(000) = 1836, T = 293 K, l(MoKa) = 0.71069 ?and m = 11.47 cm-1. The final R = 0.072 and wR = 0.092 for 2456 observed reflections with I ≥ 3s(I). The molecule has a dimeric structure with two centrosymmetric hydroxyl bridges. The samarium atom is coordinated by five oxygen atoms to form a distorted square-pyramid geometry with the average SmO(Ar) distance of 2.18 ?

关键词： lanthanide samarium aryloxide crystal structure

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Molecular Cloning and Expression Analysis of a Cys2/His2 Type Zinc Finger Protein Gene in Upland Cotton

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棉花学报 2008年第S1期20卷 73-页

作者： YANG Yu-wen,NI Wan-chao,ZHANG bao-long,shen Xin-lian(Jiangsu Academy of Agriculture Sciences,48 Zhonglinjie Street,Nanjing,Jiangsu 210014,China) J iangsu Academy of Agriculture Sciences 48 Zhonglinjie StreetNanjingJ iangsu 210014China

The zinc finger proteins belong to the largest family of transcription *** there is little research of Cys2/His2 type zinc finger proteins in cotton,and there is no submission of correlating

关键词： Cys Molecular Cloning and Expression Analysis of a Cys2/His2 Type Zinc Finger Protein Gene in Upland Cotton

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Cottonseed Oil as Promising Biodiesel in Future

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棉花学报 2008年第S1期20卷 62-页

作者： NI Wan-chao,YANG Yu-wen,ZHANG bao-long,shen Xin-lian(Jiangsu Academy of Agriculture Sciences,48 Zhonglinglie Street,Nanjing,Jiangsu 210014,China) Jiangsu Academy of Agriculture Sciences 48 Zhonglinglie StreetNanjingJiangsu 210014China

With recent increases in petroleum prices,there is renewed interest in vegetable oil and their derivatives as alternative fuels for diesel *** are more than 350 oil-bearing crops identified,

关键词： Cottonseed Oil as Promising Biodiesel in Future RNAi than

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三相移分布反馈激光器的静态及动态特性分析

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中国激光 2001年第10期28卷 885-889页

作者：卓均飞鲍吉龙沈丹勋浙江大学西溪校区计算机中心杭州310028 河海大学计算机及信息工程学院常州213022

提出了一种新的分布反馈 (DFB)激光器的传输矩阵 (TMM)分析方法──向量法 ,并建立了一个新的小信号分析模型。利用向量法及小信号分析模型 ,考虑了空间烧孔 (SHB)及非线性增益的因素 ,分析了三相移分布反馈激光器 (3PS DFB)的静态及动... 详细信息

提出了一种新的分布反馈 (DFB)激光器的传输矩阵 (TMM)分析方法──向量法 ,并建立了一个新的小信号分析模型。利用向量法及小信号分析模型 ,考虑了空间烧孔 (SHB)及非线性增益的因素 ,分析了三相移分布反馈激光器 (3PS DFB)的静态及动态特性 ,得出不同电流注入情况下的载流子密度及光子密度的轴向分布。

关键词：分布反馈激光器耦合波方程速率方程向量处理

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Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Xue-Qian Wang Feng-Qi Zhang Xiao-Ya Cui Bing-Bing Fan Jia-Ming Guo Zhi-Min Guo Rui Huang Wen Huang Xu-Bo Li Meng-Ru Li Yan Ma Zhi-Hua shen Yong-Gang Sun De-Zhuang Wang Fei-Yang Wang Li-Qiang Wang Nan Wang Tian-Li Wang Wei Wang Xiao-Yang Wang Yi-Han Wang Fu-Jie Yu Yu-Zhen Yin Ling-Kun Zhang Yi Zhang Jian-Yang Zhang Qi Zhao Yu-Ping Zhao Xin-Dong Zhu Yasir Sohail Ya-Nan Chen Tao Feng Qi-long Gao Hai-Yan He Yong-Jiang Huang Zeng-bao Jiao Hua Ji Yao Jiang Qiang Li Xiao-Ming Li Wei-Bing Liao Huai-Jun Lin Hui Liu Qi Liu Qing-Feng Liu Wei-Di Liu Xiong-Jun Liu Yang Lu Yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan Qing Wang Hong-Hui Wu Yuan Wu Tao Yang Wei-Ming Yang Qian Yu Jin-Yu Zhang Zhi-Gang Chen Liang Mao Yang Ren bao-long shen Xun-Li Wang Zhe Jia He Zhu Zhen-Duo Wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(HEAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of HEAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring HEAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

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Mechanism by which Rab5 promotes regeneration and functional recovery of zebrafish Mauthner axons

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Neural Regeneration Research 2025年第6期20卷 1816-1824页

作者： Jiantao Cui Yueru shen Zheng Song Dinggang Fan Bing Hu Center for Advanced Interdisciplinary Science and Biomedicine of IHM Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina

Rab5 is a GTPase protein that is involved in intracellular membrane trafficking. It functions by binding to various effector proteins and regulating cellular responses, including the formation of transport vesicles and their fusion with the cellular membrane. Rab5 has been reported to play an important role in the development of the zebrafish embryo;however, its role in axonal regeneration in the central nervous system remains unclear. In this study, we established a zebrafish Mauthner cell model of axonal injury using single-cell electroporation and two-photon axotomy techniques. We found that overexpression of Rab5 in single Mauthner cells promoted marked axonal regeneration and increased the number of intra-axonal transport vesicles. In contrast, treatment of zebrafish larvae with the Rab kinase inhibitor CID-1067700markedly inhibited axonal regeneration in Mauthner cells. We also found that Rab5 activated phosphatidylinositol 3-kinase(PI3K) during axonal repair of Mauthner cells and promoted the recovery of zebrafish locomotor function. Additionally, rapamycin, an inhibitor of the mechanistic target of rapamycin downstream of PI3K, markedly hindered axonal regeneration. These findings suggest that Rab5 promotes the axonal regeneration of injured zebrafish Mauthner cells by activating the PI3K signaling pathway.

关键词： axonal regeneration Mauthner cell nerve regeneration Rab5 zebrafish

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Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 102-110页

作者： Qiang Liu Xiang Li shen Du Ming Gao Yanbin Yin Jiongming Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the *** which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid *** contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive ***,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding *** results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles *** addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually *** one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the *** findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

关键词： mold flux low basicity bubbles three-dimensional X-ray microscope viscosity

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