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High throughput synthesis enabled exploration of CoCrFeNi-based high entropy alloys

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Journal of Materials Science & Technology 2022年第15期110卷 269-282页

作者： l.Zhao l.Jiang l.x.yang H.Wang W.Y.Zhang G.Y.Ji x.Zhou W.A.Curtin x.B.Chen P.K.liaw S.Y.Chen H.Z.Wang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Metal Materials CharacterizationCentral Iron and Steel Research InstituteBeijing 100081China Institute for Advance Studies in Precision Materials Yantai UniversityYantai 264005China National Center for Materials Service Safety University of Science and Technology BeijingBeijing 100083China laboratory for Multiscale Mechanics Modeling Ecole Polytechnique Federale de LausanneLausanne CH-1015Switzerland School of Engineering RMIT UniversityMelbourne 3046Australia Department of Materials Science and Engineering The University of Tennessee37996USA

To accelerate the exploration,screening,and discovery of structural high-entropy alloys with targeted properties,the newly developed High-Throughput Hot-Isostatic-Pressing based Micro-Synthesis Approach(HT-HIP-MSA)is employed to efficiently synthesize and characterize 85 combinatorial alloys in a 13-principal element alloying *** Co Cr Fe Ni-based high entropy alloys span 1 quaternary,9 quinary,and 36 senary alloy systems,and their composition-structure-property relationships are characterized and analyzed experimentally and *** the single-phase FCC CoCrFeNi alloy base,with Mn,Cu,Ti,Nb,Ta,Mo,W,Al,and Si as principal element alloying additions,we find(1)the extended Mn solubility in the single-phase FCC CoCrFeNi-Mn_(x) alloys,(2)the destabilizing behavior for most of the quinary and senary alloys,and(3)the distinctive solid-solution-strengthening effects in the *** combining the computational methods,the HT-HIP-MSA can be systematic and economic to explore and refine the compositions,structures,and properties of structural high-entropy alloys.

关键词： High-entropy alloys High-throughput Composition-structure-property

Electronic structure of correlated topological insulator candidate YbB6 studied by photoemission and quantum oscillation

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Chinese Physics B 2020年第1期29卷 70-75页

作者： T Zhang G li S C Sun N Qin l Kang S H Yao H M Weng S K Mo l li Z K liu l x yang Y l Chen State Key laboratory of low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Department of Physics University of MichiganAnn ArborMI 48109USA Beijing National laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China National laboratory of Solid State Microstructures&Department of Materials Science and Engineering Nanjing UniversityNanjing 210093China Collaborative Innovation Center of Quantum Matter BeijingChina Songshan lake Materials laboratory Dongguan 523808China CAS Center for Excellence in Topological Quantum Computation Beijing 100190China Physical Science laboratory Huairou National Comprehensive Science CenterBeijing 101400China Advanced light Source Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA School of Physical Science and Technology ShanghaiTech University and CAS-Shanghai Science Research CenterShanghai 201210China ShanghaiTech laboratory for Topological Physics Shanghai 200031China Frontier Science Center for Quantum Information Beijing 100084China Department of Physics Clarendon LaboratoryUniversity of Oxford Parks RoadOxford OX13PUUK

Angle-resolved photoemission spectroscopy(ARPES)and torque magnetometry(TM)measurements have been carried out to study the electronic structures of a correlated topological insulator(TI)candidate Yb *** observed clear surface states on the[001]surface centered at theГ^- and М^- points of the surface Brillouin ***,the fermiology revealed by the quantum oscillation of TM measurements agrees excellently with ARPES ***,the band structures we observed suggest that the band inversion in Yb B6 happens between the Yb5 dand B2bands,instead of the Yb5dand Yb4fbands as suggested by previous theoretical investigation,which will help settle the heavy debate regarding the topological nature of samarium/ytterbium hexaborides.

关键词： topological insulator electronic structure surface states

Planning of Anti-Disaster Transformer Substation Based on NN and PSO

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Engineering（科研） 2013年第1期5卷 163-167页

作者： T. Wang Q.J. Tang x.l. yang x.D. liu High Voltage Division Xi’an Jiaotong University Xi’an China Wenzhou Electric Power Bureau Wenzhou China

Recently, the frequent extreme natural disasters made enormous damage to the electric grid leading to blackouts. The lifeline system aiming at providing continuous power supply for the important load in extreme natural disasters was designed in that condition. In this paper, a developed model for planning of the transformer substation in lifeline system? which considered the effect of existing transformer substations, the motivated areas and punishment areas was proposed. The Hopfield NN was adopted to solve the feeders and the PSO was adopted to new the locations of the transformer substations based on the feeders. The planning result not only took fully use of the existing substation but also get the suitable location for new construction which was satisfactory.

关键词： lifeline system transformer substation Hopfield NN PSO

Force and impulse multi-sensor based on flexible gate dielectric field effect transistor

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 214-220页

作者： Chao Tan Junling lü Chunchi Zhang Dong liang lei yang Zegao Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China

Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other ***-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate ***,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of *** we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric MoS_(2)-FET for force and impulse sensor *** systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).The applied force was detected and recorded by I_(ds)with a low power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on ***,there was almost no performance loss for the device as left in the air for two months.

关键词： flexible gate dielectric transistor force sensor impulse sensor force sensor array

A VAlVE FOR TEMPERATURE CONTROl DOMINATED BY SHAPE MEMORY AllOYS

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Acta Metallurgica Sinica(English letters) 1999年第4期12卷 492-494页

作者： x.l.yang1) ,x.Sun2) ,C.W. Wang 2),D.Q. Geng2)and C.M. liu 2) 1)Schoolof Mechanical Engineering and Automation , Northeastern University ,Shenyang 110006 ,China 2)Schoolof Material & Metallurgy, Northeastern University,Shenyang 110006 ,China

Thispaperintroducesa valve which useshape memory alloys( SMA) fortemperaturecon trol, which makes useof deformation of SMAcaused by variation oftemperaturetocontrolmechanical parts. Thevalvecan beswitched on or off automatically and hasthe advantages ofsimplestructureand reliable *** beusedin adverse workingconditionsor conditions with lower requirementson controlling precision ofthetemperatures. Consequent ly,it hasextensive application prospects.

关键词： shape memory alloy valve,thermomechamicalstability

2%Cl2/20%O2/Ar 环境中 Si3N4 陶瓷的高温腐蚀(英文)

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山东大学学报(工学版) 1998年第4期 10-17页

作者： l.x.yang (School of Metallurgy and Materials,The University of Birmingham,Birminham B15 2TT UK) x.Wang and l.x.Huang (Dept.of Mater.Sci.,and Eng,Shandong University of Technology,Jinan 250061)

使用ｔｈｅｒｍｏｇｒａｖｉｍｅｔｒｉｃ分析和表面分析法，对２％Ｃｌ２／２０％Ｏ２／Ａｒ环境中Ｓｉ３Ｎ４陶瓷在１１５０℃和１３５０℃时的化学反应进行了研究。在１１５０℃，ＳｉＯ２层Ｃｌ２有少的渗透趋向，氧扩散穿过ＳｉＯ... 详细信息

使用ｔｈｅｒｍｏｇｒａｖｉｍｅｔｒｉｃ分析和表面分析法，对２％Ｃｌ２／２０％Ｏ２／Ａｒ环境中Ｓｉ３Ｎ４陶瓷在１１５０℃和１３５０℃时的化学反应进行了研究。在１１５０℃，ＳｉＯ２层Ｃｌ２有少的渗透趋向，氧扩散穿过ＳｉＯ２层而发生反应。但在１３５０℃，某些添加物和杂质，向表层和晶养扩散，且Ｃｌ２与Ｓｉ３Ｎ４的反应对腐蚀有较大影响。

关键词：陶瓷复合材料氧化氯化效应

High spin structures in A～110 mass region

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High spin structures in A～110 mass region

Elastic-plastic behavior of a semicircular frame being pressed against a rigid plane

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： S.Y.Wang~(1 1)),B.Qi~1,D.P.Sun~1,C.J.xu~1,C.liu~1,x.l.Ren~1,l.liu~1,B.T.Duan~1, x.x.Zhu~1,J.xi~1,x.l.yang~1,F.Z,lv~1,H.Hua~2,Z.Y.li~2,S.Q.Zhang~2,J.M.Yao~2, l.H.Zhu~3,x.G.Wu~3,G.S.li~3,Y.liu~3,x.Q.li~3,Y.Zheng~3,l.l.Wang~3,l.Wang~3 1(School of Space Science and Physics,Shandong University at Weihai,Weihai 264209,China) 2(School of Physicsand SK lab.of Nucl.Phys.& Tech.,Peking University,Beijing 100871,China) 3(China Institute of Atomic Energy,Beijing 102413,China)

Using the techniques of in-beamγ—ray spectroscopy,the high-spin states of the neutron-rich nuclei Sb, Sn,and In were studied via the Cd（li,5n）Sb,Cd（li,3n）Sb,Cd（li,4n1p）Sn and Cd（li,α3n）In fusion-evaporation *** DCO ratios andγ—γcoincidences were *** a result of these experiments the level schemes of Sb,Sn,and In were significantly extended. Excited states of these neutron-rich nuclei were discussed within the framework of the particle-rotor model （PRM） and the triaxial relativistic mean-field（RMF） approaches.

关键词： neutron-rich nuclei high spin states fusion-evaporation reaction

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Acta Mechanica Sinica 2008年第4期24卷 419-432页

作者： x.W.Zhang J.l.yang T.x.Yu Institute of Solid Mechanics Beihang University Beijing 100083 China Department of Mechanical Engineering Hong Kong University of Science and Technology Kowloon Hong Kong China

As a simplified structural model, a semicircular frame is used to study the crashworthiness behavior of an aircraft fuselage. The quasi-static large elastic-plastic deformation of a semicircular frame in the process of its being pressed against a rigid ground is analyzed. First, based on the linear elastic assumption, the quasi-static large deformation contact process of the frame can be divided into three phases, i.e., point contact, line contact and post-buckling. By means of a shooting method, the relations between the displacement and contact force as well as the distribution of bending moment in the three phases are obtained. Then, by assuming an elastic, perfectly-plastic moment-curvature relationship for the semi-circular frame, the contact process is analyzed in detail to reveal the plastic collapse mechanism, the traveling of plastic hinge and the force-displacement relationship. In order to verify the analysis, a preliminary experiment was conducted, in which two types of half rings with clamped ends were pressed by a rigid plate. In addition, a numerical simulation is also conducted by employing ABAQUS to analyze both rectangular cross-sectional beam and I-beam. Finally, the theoretical predictions are compared with the experimental results and numerical solutions, showing that the elastic-plastic analysis can predict the contact process very well.

关键词： Elastic-plastic·large deformation ·Semicircular frame Contact ·Traveling hinge

Approximate Augmented lagrangian Functions and Nonlinear Semidefinite Programs

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Acta Mathematica Sinica,English Series 2006年第5期22卷 1283-1296页

作者： x.x.HUANG K.l.TEO x.Q.yang School of Management Fudan University Shanghai 200433 P. R. China and Department of Mathematics and Computer Science Chongqing Normal UniversityChongqing 400047 P. R. China Department of Mathematics and Statistics Curtin University of Technology Perth Australia Department of Applied Mathematics The Hong Kong Polytechnic UniversityKowloon Hong Kong P. R. China

In this paper, an approximate augmented lagrangian function for nonlinear semidefinite programs is introduced. Some basic properties of the approximate augmented lagrange function such as monotonicity and convexity are discussed. Necessary and sufficient conditions for approximate strong duality results are derived. Conditions for an approximate exact penalty representation in the framework of augmented lagrangian are given. Under certain conditions, it is shown that any limit point of a sequence of stationary points of approximate augmented lagrangian problems is a KKT point of the original semidefinite program and that a sequence of optimal solutions to augmented lagrangian problems converges to a solution of the original semidefinite program.

关键词： semidefinite programming augmented lagrangian duality exact penalty convergence,stationary point