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low-Cycle Fatigue Properties of Nickel-Based superalloys Processed by high-gradient directional solidification

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Acta Metallurgica sinica(English letters) 2017年第9期30卷 878-886页

作者： Z.d.Fan d.wang C.liu g.Zhang j.shen l.h.lou j.Zhang superalloys division Institute of Metal ResearchChineseAcademy of SciencesShenyang 110016China shenyang National laboratory for Materials science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China xi'an Thermal Power Research Institute Co. Ltd.Xi'an 710054China

The low-cycle fatigue （lCF） properties of dd10 （single-crystal） and dZ53 （columnar-grained） superalloys solidified by liquid-metal cooling （lMC） and high-rate solidification （hRs） processes have been systematically investi- gated. It was found that the lCF life of dZ53 solidified by lMC was obviously better than that solidified by hRs. In contrast, for dd10, lMC showed no remarkable influences on lCF properties at high temperature and only improved lCF properties at intermediate temperature. Microstructure examination showed that the cracks generally initiated at microp- ores in the subsurface at intermediate temperature. however, the cracks occurred on the surface due to oxidation, or persistent slip bands near script-MC at high temperature. Therefore, the benefits of lMC technique can be attributed to both of the reduced casting.d.fects which significantly affect the lCF properties at intermediate temperature and the improved microstructural homogeneity which was strongly correlated to the lCF properties of alloys at high temperature.

关键词： superalloys Rapid solidification low-cycle fatigue Microstructure

Effect of water injection on the cavitation control:experiments on a NACA66(MOd)hydrofoil

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Acta Mechanica sinica 2020年第5期36卷 999-1017,I0001页

作者： W.wang T.Tang Q.d.Zhang x.F.wang Z.Y.An T.h.Tong Z.j.li school of Energy and Power Engineering Dalian University of TechnologyDalian 116024China Key laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of EducationDalian University of TechnologyDalian 116024China

The objective of this work is to investigate experimentally controlling cavitating flow over NACA66(MOd)hydrofoils by means of an active water injection along its suction *** continuous water vertically jets out of the chamber inside the hydrofoil through evenly distributed surface *** were carried out in cavitation water *** high-speed visualization technology and the particle image velocimetry(PIV)system to study the sheetlcloud cavity *** studied the effects of this active control on cavity evolution with four kinds of jet flow at two different jet *** analyzed the effect of water injection on the mechanism of the cavitating flow *** results were all compared with that for the original hydrofoil without jet and show that the active jet can effectively suppress the sheet/cloud cavitation characterized by shrinking the attached cavity size and breaking the large-scaled cloud sheding vortex cavity into small-scaled *** optimum effectiveness of cavitation suppression is affected by the jet flow rates and jet *** water injection at flow rate coefficient 0.0245 with the jet position of 0.45C reduces the maximum sheet cavity length by 79.4%and the cavity shedding is diminished completely,which gives the most superior effect of sheet cavitation *** jet blocks the re-entrant jet moving upstream and weakens the power of re-entrant jet and thus restrains the cavitation development effectively and stabilizes the flow field.

关键词： Cavitation active control sheet/cloud cavitation.Water injection Re-entrant jet

Anisotropic Electroplastic Effects on the Mechanical Properties of a Nano-lamellar Austenitic stainless steel

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Acta Metallurgica sinica(English letters) 2021年第4期34卷 534-542页

作者： Y.R.Ma h.j.Yang.d.d.Ben x.h.shao Y.Z.Tian Q.wang Z.F.Zhang shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China school of Materials science and Engineering University of Sciences and Technology of ChinaHefei230026China shenyang National laboratory of Materials science Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Key laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110016China

Effects of electropulsing treatment(EPT)on the microstructural evolution and mechanical properties of a cold-rolled 316 l austenitic stainless steel with nano-lamellar structure were *** EPT experiments were carried out with the electric current direction along the rolling.d.rection(Rd)and the transverse direction(Td)of the samples,*** anisotropic electroplastic effects for the Rd and Td specimens,i.e.,reduced hardness/strength and enhanced ductility,were obtained owing to the different recrystallization behaviors of the Rd and Td specimens during *** Rd specimens after EPT with larger recrystallized grain size and higher volume fraction of recrystallization show lower strength and higher elongation than that of the Td *** main reason might be attributed to the change of the current direction in the two kinds of samples,which results in the different sensitivity of the microstructures to thermal and athermal effects during EPT.

关键词： stainless steel Electroplastic effect Electropulsing Recrystallization Anisotropy strength Plasticity

Molecular beam epitaxy growth of monolayer hexagonal MnTe_(2)on si(111)substrate

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Chinese Physics B 2021年第12期30卷 142-147页

作者： s lu K Peng P d wang A x Chen W Ren x W Fang Y Wu Z Y li h F li F Y Cheng K l.x.ong j Y Yang j Z wang s A ding Y P jiang) l wang Q li F s li l F Chi Institute of Functional Nano&soft Materials(FUNsOM) Soochow UniversitySuzhou 215123China Vacuum Interconnected Nanotech Workstation(Nano-x) Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China Key laboratory of Polar Materials and devices(MOE) Department of ElectronicSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China school of Physical science and Technology Southwest UniversityChongqing 400715China school of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

Monolayer MnTe_(2)stabilized as 1 T structure has been theoretically predicted to be a two-dimensional(2 d)ferromagnetic metal and can be tuned via strain *** is no naturally van der Waals(vdW)layered MnTe_(2)bulk,leaving mechanical exfoliation impossible to prepare monolayer MnTe_(2).herein,by means of molecular beam epitaxy(MBE),we successfully prepared monolayer hexagonal MnTe_(2)on si(111)under Te rich *** reflection high-energy electron diffraction(RhEEd)and low-energy electron diffraction(lEEd)patterns suggest the monolayer is atomically flat without surface *** valence state of Mn^(4+)and the atom ratio of([Te]:[Mn])further confirm the MnTe_(2)*** tunneling spectroscopy(sTs)shows the hexagonal MnTe_(2)monolayer is a semiconductor with a large bandgap of~2.78 *** valence-band maximum(VBM)locates at theΓpoint,as illustrated by angle-resolved photoemission spectroscopy(ARPEs),below which three hole-type bands with parabolic dispersion can be *** successful synthesis of monolayer MnTe_(2)film provides a new platform to investigate the 2d magnetism.

关键词： molecular beam epitaxy hexagonal MnTe_(2) band structure

Future Physics Programme of BEsⅢ

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Chinese Physics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Ablikim M.N.Achasov P.Adlarson s.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren j.V.Bennett N.Berger M.Bertani d.Bettoni F.Bianchi j Biernat j.Bloms I.Boyko R.A.Briere l.Calibbi h.Cai x.Cai A.Calcaterra g.F.Cao N.Cao s.A.Cetin j.Chai j.F.Chang W.l.Chang j.Charles g.Chelkov Chen g.Chen h.s.Chen j.C.Chen M.l.Chen s.j.Chen Y.B.Chen h.Y.Cheng W.Cheng g.Cibinetto F.Cossio x.F.Cui h.l.dai j.P.dai x.C.dai A.dbeyssi d.dedovich Z.Y.deng A.denig.d.nysenko M.destefanis s.descotes-genon F.de Mori Y.ding C.dong j.dong l.Y.dong M.Y.dong Z.l.dou s.x.du s.I.Eidelman j.Z.Fan j.Fang s.s.Fang Y.Fang R.Farinelli l.Fava F.Feldbauer g.Felici C.Q.Feng M.Fritsch C.d.Fu Y.Fu Q.gao x.l.gao Y.gao Y.gao Y.g.gao Z.gao B.garillon I.garzia E.M.gersabeck A.gilman K.goetzen l.gong W.x.gong W.gradl M.greco l.M.gu M.h.gu Y.T.gu A.Q.guo F.K.guo l.B.guo R.P.guo Y.P.guo A.guskov s.han x.Q.hao F.A.harris K.l.he F.h.heinsius T.held Y.K.heng Y.R.hou Z.l.hou h.M.hu j.F.hu T.hu Y.hu g.s.huang j.s.huang x.T.huang x.Z.huang Z.l.huang N.huesken T.hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.ji Q.P.ji x.B.ji x.l.ji h.l.jiang x.s.j.ang x.Y.jiang j.B.jiao Z.jiao d.P.jin s.j.n Y.jin T.johansson N.Kalantar-Nayestanaki x.s.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt l.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.g.Kurth W.Kuhn j.s.lange P.larin l.lavezzi h.leithoff T.lenz C.li Cheng li d.M.li F.li F.Y.li g.li h.B.li h.j.li j.C.li j.W.li Ke li l.K.li lei li P.l.li P.R.li Q.Y.li W.d.li W.g.li x.h.li x.l.li x.N.li x.Q.li Z.B.li h.liang h.liang Y.F.liang Y.T.liang g.R.liao l.Z.liao j.libby C.x.lin d.x.lin Y.j.lin B.liu B.j.liu C.x.liu d.liu d.Y.liu F.h.liu Fang liu Feng liu h.B.liu h.M.liu huanhuan liu huihui liu j.B.liu j.Y.liu K.Y.liu Ke liu Q.liu s.B.liu T.liu x.liu x.Y.liu Y.B.liu Z.A.liu Zhiqing liu Y.F.long x.C.lou h.j.lu j.d.lu j.g.lu Y.lu Y.P.lu C.l.luo M.x.luo P.W.luo T.luo x.l.luo s.lusso x.R.lyu F.C.Ma h.l.Ma l.l.Ma M.M.Ma Q.M.Ma x.N.Ma x.x. Institute of high Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced science and Technology Beijing 100190China COMsATs University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China g.I.Budker Institute of Nuclear Physics sB RAs(BINP) Novosibirsk 630090Russia gsI helmholtzcentre for heavy Ion Research gmbh D-64291 DarmstadtGermany guangxi Normal University Guilin 541004China guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University of science and Technology Luoyang 471003China huangshan College Huangshan 245000China hunan Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN laboratori Nazionali di Frascati I-00044FrascatiItaly INFN sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia johannes gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia justus-liebig-Universitaet giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands lanzhou University Lanzhou 730000China liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China shandong University Jinan 250100China shanghai

There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like xYZ states at BEsⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related x(1835) meson state at BEsⅢ, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BEsⅢ during the remaining operation period of BEPCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCⅡ to higher luminosity.

关键词： meson hadron optimization

PhYsICAl sIMUlATION BAsEd INTEllIgENT sYsTEM FOR ThE PREdICTION OF shEET METAl dRAWINg CAPABIlITY

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Acta Metallurgica sinica(English letters) 2000年第2期13卷 451-458页

作者： d.lv d.N.he x.j.Bao Y.Q.Zhang x.Y.Ruan j.l.Cheng j.Y.jiang National die&Mold CAd Engineering Research Center Shanghai Jiaotong UniversityShanghai 200030China shanghai Volkswagen Automotive Company limited Shanghai 201805China

With the combination of a new theoretical formula, physical simulation experiments, the technology of artificial neural network and database, an intelligent system for the prediction of sheet metal drawing capability is constructed for the first time. A modified criterion for sheet metal drawing capability is proposed in this paper, namely, the Technological limiting.d.awing Ratio, TldR = f(R, n, s, t, F, μ,r_d,r_p…). Based on the studies of other scholars, a new formula is derived to predict the TldR in this paper. Then a series of orthogonal physical simulation experiments are designed to investigate the effect of technological parameters on the TldR, and the results are analyzed in the paper. Then the predicting system is constructed with the combination of the theoretical formula, orthogonal experiments, the technology of artifocial neural network and database. The predicted results show good agreements with experimental data, so it can be used to avoid the blindness in the selection of sheet metal before stamping. The system operates under the Windows operating system, and it supports the mechanism of Client/server as well as Intranet, so the system has high engineering value.

关键词： TldR theoretical analysis physical simulation orthogonal experiments neural network database predicting system

A dynamic range extension system for lhAAsOWCdA-1

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Radiation detection Technology and Methods 2021年第4期5卷 520-530页

作者： F.Aharonian Q.An Axikegu l.x.Bai Y.x.Bai Y.W.Bao d.Bastieri x.j.Bi Y.j.Bi h.Cai j.T.Cai Z.Cao Z.Cao j.Chang j.F.Chang x.C.Chang B.M.Chen j.Chen l.Chen l.Chen l.Chen M.j.Chen M.l.Chen Q.h.Chen s.h.Chen s.Z.Chen T.l.Chen x.l.Chen Y.Chen N.Cheng Y.d.Cheng s.W.Cui x.h.Cui Y.d.Cui B.Z.dai h.l.dai Z.g.d.i danzengluobu d.della Volpe B.d’Ettorre Piazzoli x.j.dong j.h.Fan Y.Z.Fan Z.x.Fan j.Fang K.Fang C.F.Feng l.Feng s.h.Feng Y.l.Feng B.gao C.d.gao Q.gao W.gao M.M.ge l.s.geng g.h.gong Q.B.gou M.h.gu j.g.guo x.l.guo Y.Q.guo Y.Y.guo Y.A.han h.h.he h.N.he j.C.he s.l.he x.B.he Y.he M.heller Y.K.hor C.hou x.h.u h.B.hu s.hu s.C.hu x.j.hu d.h.huang Q.l.huang W.h.huang x.T.huang Y.huang Z.C.huang F.ji x.l.ji h.Y.jia K.jiang Z.j.jiang C.jin d.Kuleshov K.levochkin B.B.li C.li C.li F.li h.B.li h.C.li h.Y.li j.li K.li W.l.li x.li x.li x.R.li Y.li Y.Z.li Z.li Z.li E.W.liang Y.F.liang s.j.lin B.liu C.liu d.liu h.liu h.d.liu j.liu j.l.liu j.s.liu j.Y.liu M.Y.liu R.Y.liu s.M.liu W.liu Y.N.liu Z.x.liu W.j.long R.lu h.K.lv B.Q.Ma l.l.Ma x.h.Ma j.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi d.Ruffolo V.Rulev A.sáiz l.shao O.shchegolev x.d.sheng j.R.shi h.C.song Yu.V.stenkin V.stepanov Q.N.sun x.N.sun Z.B.sun P.h.T.Tam Z.B.Tang W.W.Tian B.d.wang C.wang h.wang h.g.wang j.C.wang j.s.wang l.P.wang l.Y.wang R.N.wang W.wang W.wang x.g.wang x.j.wang x.Y.wang Y.d.wang Y.j.wang Y.P.wang Z.wang Z.wang Z.h.wang Z.x.Wang.d.M.Wei j.j.Wei Y.j.Wei T.Wen C.Y.Wu h.R.Wu s.Wu W.x.Wu x.F.Wu s.Q.xi j.xia j.j.xia g.M.xiang g.xiao h.B.xiao g.g.xin Y.l.x.n Y.xing.d.l.x. R.x.xu l.x.e d.h.Yan C.W.Yang F.F.Yang j.Y.Yang l.l.Yang M.j.Yang R.Z.Yang s.B.Yang Y.h.yao Z.g.yao Y.M.Ye l.Q.Yin N.Yin x.h.You Z.Y.You Y.h.Yu Q.Yuan h.d.Zeng T.x.Zeng W.Zeng Z.K.Zeng M.Zha x.x.Zhai B.B.Zhang h.M.Zhang h.Y.Zhang j.l.Zhang j.W.Zhang l.Zhang l.Zhang l.x.Zhang P.F.Zhang P.P.Zhang R.Zhang s.R.Zhang s.s.Zhang x.Zhang x.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.l.Zhang B.Zhao j.Zhao l.Zhao l.Z.Zhao s.P.Zhao F.Zheng Y.Zheng B.Zhou h.Zhou j.N.Zhou Key laboratory of Particle Astrophyics&Experimental Physics division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduSichuanChina state Key laboratory of Particle detection and Electronics BeijingChina University of science and Technology of China Hefei 230026AnhuiChina department of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China National space science Center Chinese Academy of SciencesBeijing 100190China school of Physics Peking UniversityBeijing 100871China Center for Astrophysics Guangzhou UniversityGuangzhou 510006GuangdongChina school of Physics and Astronomy&school of Physics(guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina school of Physical science and Technology Guangxi UniversityNanning 530004GuangxiChina hebei Normal University Shijiazhuang 050024HebeiChina school of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001HenanChina school of Astronomy and space science Nanjing UniversityNanjing 210023JiangsuChina Key laboratory of dark Matter and space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Institute of Frontier and Interdisciplinary science Shandong UniversityQingdao 266237ShandongChina Key laboratory for Research in gal.x.es and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung.d.o lee Institute&school of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China school of Physical science and Technology&school of Information science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina Key laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina school of Physics

Purpose The main scientific goal of lhAAsO-WCdA is to survey gamma-ray sources with energy from 100 geV to 30 *** observe high-energy shower events,especially to measure the energy spectrum of cosmic rays from 100 TeV to 10 PeV,a dynamic range extension system(WCdA++)is designed to use a 1.5-inch PMT with a dynamic range of four orders of magnitude for each cell in *** The dynamic range is extended by using these PMTs to measure the effective charge density in the core region of air shower events,which is an important parameter for identifying the composition of primary *** and Conclusion The system has been running for more than one *** this paper,the details of the design and performance of WCdA++are presented.

关键词： lhAAsO-WCdA WCdA++ Water Cherenkov detector Performance

Anisotropy of the Wear Behavior for Carbon Nanotube-Reinforced 6061Al Composites

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Acta Metallurgica sinica(English letters) 2023年第5期36卷 814-826页

作者： x.N.li j.F.Zhang W.h.xue K.Ma P.Y.li Z.Y.liu B.l.x.ao d.R.Ni Q.Z.Wang.d.wang Z.Y.Ma school of Materials science and Engineering University of Science and Technology of ChinaShenyang110016China shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

Carbon nanotube(CNT)-reinforced 6061Al(CNT/6061Al)composites with directionally aligned CNT were fabricated,and their wear behavior was *** results indicate that the wear properties of CNT/6061Al composites exhibited a significant anisotropy.A certain CNT concentrations(1 wt%and 2 wt%)could effectively improve the wear resistance of CNT/6061Al composites along the CNT circumferential and CNT radial directions for the load transfer,grain refinement and self-lubrication effect of *** Brass{011}and{112}textures inhibited the load transfer effect of CNT along the CNT radial direction,resulting in a better wear resistance along CNT circumferential direction than CNT radial *** the CNT axial direction,the weak deformability of composites caused by the intensifyingfiber texture was the main reasons for the poor wear resistance of CNT/6061Al composites with increasing CNT concentration.

关键词： Carbon nanotube Metal matrix composite Wear Anisotropy

Four α correlations in nuclear fragmentation: a game of resonances

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Chinese Physics C 2021年第2期45卷 406-413页

作者： M.huang A.Bonasera s.Zhang h.Zheng.d.x.wang j.C.wang N.song x.Tang l.lu g.Zhang Z.Kohley M.R.d.Rodrigues Y.g.Ma s.j.Yennello College of Mathematics and Physics Inner Mongolia University for NationalitiesTongliao 028000China Institute of Nuclear Physics Inner Mongolia University for NationalitiesTongliao 028000China Cyclotron Institute Texas A&M UniversityCollege StationTX 77843USA laboratori Nazionali del sud INFNvia Santa Sofia6295123 CataniaItaly school of Physics and Information Technology Shaanxi Normal UniversityXi'an 710119China shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Chemistry department Texas A&M UniversityCollege StationTX 77843USA Key laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

heavy ion collisions near the Fermi energy produce a‘freezout’region where fragments appear and later decay,emitting mainly neutrons,protons,alpha particles,and gamma *** decay products carry information about the decaying *** events may result in high yields of boson particles,especially alpha particles,and may carry important information about the nuclear Bose Einstein condensate(BEC).We study‘in medium’fourαcorrelations and link them to the‘fission’of 16O in two 8Be in the ground state or 12C*(hoyle state)+α.Using novel techniques for the correlation functions,we confirm the resonance of 16O at 15.2 MeV excitation energy,and the possibility of a lower resonance,close to 14.72 *** latter resonance is the result of allαparticles having 92 keV relative kinetic energies.

关键词： 4αresonance hoyle state Bose Einstein condensate heavy ion reactions