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Comparison of microst.uct.re and.m.chanical behavior of t.-35Nb manufact.red by.laser powder bed fusion from element.l powder mixt.re and prealloy.d powder

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journal of mat.rials Science & t.chnology 2022年第10期105卷 1-16页

作者： j.C.Wang y.j.liu S.x.liang y.S.zhang l.q.Wang t.B.Sercombe l.C.zhang School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia School of Engineering M050The University of Western Australia35 Stirling HighwayCrawleyPerthWA 6009Australia Nort.west.Inst.t.t. for Nonferrous met.l Research Xi’an 710016China St.t. Key.laborat.ry.of met.l mat.ix Composit.s School of Material Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Alt.ough different.t.0}es of powder feedst.ck are used for addit.ve manufact.ring via laser powder bed fusion(l-PBF),limit.d work has at.empt.d t. direct.y.compare t.e microst.uct.re and.m.chanical behavior of component. manufact.red from t.ose powder *** work invest.gat.d t.e microst.uct.re,phase composit.on,m.l. pool morphology.and.m.chanical propert.es of a prealloy.d t.-35Nb alloy.manufact.red using l-PBF and compared t.ese t. t.eir count.rpart. produced from element.l powder *** sam.l.s manufact.red from t.e powder mixt.re are composed of rand.m.y.dist.ibut.d undissolved Nb in t.eα/βmat.ix,result.ng from t.e unst.ble m.l. pool during t.e m.l.ing of t.e powder *** cont.ast.part. produced from prealloy.d powder display.a homogeneous microst.uct.re wit.βandαphases,owing t. t.e full m.l.ing of prealloy.d powder,t.erefore,a more st.ble m.l. pool t. achieve a homogeneous *** t.-35Nb manufact.red from prealloy.d powder exhibit. large t.nsile duct.lit.0}about.10 t.mes t.at.of t.e count.rpart. using mixed powder),at.ribut.d t. t.e high homogeneit.0}in microst.uct.re and chemical composit.on,st.ong int.rface bonding,relat.vely.low oxy.en cont.nt.and t.e exist.nce of a large amount.ofβ*** work sheds insight. int. underst.nding t.e effect.of powder feedst.ck on t.e m.l. pool st.bilit.0}t.erefore t.e microst.uct.re and.m.chanical behavior of t.e result.nt.part..

关键词： t.t.nium-niobium Powder bed fusion Addit.ve manufact.ring m.l. pool st.bilit. microst.uct.re mechanical propert.es

Role of grain boundary.charact.r on Bi segregat.on-induced embrit.lement.in ult.ahigh-purit.0}copper

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journal of mat.rials Science & t.chnology 2023年第28期159卷 52-61页

作者： y.x.Hua K.x.Song H.t.liu j.W.Wang C.m.zhang y.j.zhou B.Pang j.t.Song j.l.He H.l.Zhao School of mat.rials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China Henan Acad.m. of Sciences Zhengzhou 450000China Henan Key.laborat.ry.of Advanced Conduct.r mat.rials Zhengzhou 450046China Provincial and.m.nist.rial Co-const.uct.on of Collaborat.ve Innovat.on Cent.r of Nonferrous New mat.rials and Advanced Processing t.chnology Luoyang 471023China Cent.r of Elect.on microscopy.and St.t. Key.laborat.ry.of Silicon mat.rials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China College of mat.rials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Bismut.(Bi),as an impurit.0}element.in copper and copper-based alloy.,usually.has a st.ong t.ndency.of grain boundary.GB)segregat.on,which depends on t.e GB ***,t.e influence of such a segregat.on on t.e propert.es of ult.ahigh-purit.0}copper has been rarely.report.d and t.e exact.st.uct.ral arrangement. of Bi at.ms at.different.GBs remain largely.*** t.is st.dy.we invest.gat.d t.e influ-ence of t.ace amount. of Bi(50-300 wt.ppm)on t.e duct.lit.0}of an ult.ahigh-purit.0}copper(99.99999%)in t.e range of room t.mperat.re t. 900°*** t.nsile result. show t.at.t.e addit.on of Bi seriously.d.m.ges t.e duct.lit.0}of t.e ult.ahigh-purit.0}copper at.t.mperat.res of 450-900°C,which is due t. t.e GB segregat.on of *** t.is basis,such a segregat.on behavior at.different.t.0}es of GBs,including high and low angle GBs(HAGBs/lAGBs),and t.in boundaries(t.s),via t.e scanning elect.on microscope-elect.on backscat.ered diffract.on(SEm-EBSd)and aberrat.on-correct.d scanning t.ansmission elect.on microscope(AC-St.m)invest.gat.ons,combined wit. t.e first.principles calculat.ons were sy.t.mat.cally.*** at.mist.c charact.rizat.ons d.m.nst.at. an anisot.opic Bi segregat.on,where severe enrich-ment.of Bi at.ms t.0}ically.occurs at.t.e HAGBs,while t.e absence of Bi adsorpt.on prevails at.lAGBs or *** part.cular,t.e segregat.d Bi at.rand.m.HAGBs exhibit.d t.e direct.onal bilay.r adsorpt.on,while t.e special sy.met.ical7 HAGB present.d a uniq.e Bi-rich clust.r *** findings pro-vide a comprehensive experiment.l and comput.t.onal underst.nding on t.e at.mic-scale segregat.on of impurit.es in met.llic mat.rials.

关键词： Grain boundary.charact.r Embrit.lement Bi segregat.on At.mic configurat.on Ult.ahigh-purit.0}copper

Unveiling anneal hardening in dilut. Al-doped Al_(x)CoCrFemnNi(x = 0,0.1) high-ent.opy.alloy.

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journal of mat.rials Science & t.chnology 2021年第32期91卷 270-277页

作者： q.Cheng x.d.xu P.xie l.l.Han j.y.He x.q.li j.zhang Z.t.li y.P.li B.liu t.G.Nieh m.W.Chen j.H.Chen Cent.e for High Resolut.on Elect.on microscopy College of Materials Science and EngineeringHunan UniversityChangsha 410082China St.t. Key.laborat.ry.of Powder met.llurgy Central South UniversityChangsha 410083China Applied.m.t.rials Phy.ics Department of Materials Science and EngineeringKTH-Royal Institute of TechnologyStockholm SE10044Sweden depart.ent.of mat.rials Science and Engineering University of TennesseeKnoxvilleTN37996United States depart.ent.of mat.rials Science and Engineering Johns Hopkins UniversityBaltimoreMD 21214USA

Anneal hardening has been one of t.e approaches t. improve mechanical propert.es of solid solut.on alloy. wit. t.e face-cent.red cubic(FCC) st.uct.re,whereby.a considerable st.engt.ening can be at.ained by.annealing of cold-worked alloy. below t.e recry.t.llizat.on t.mperat.re(t.(rx)).microscopically.t.is hardening effect.has been ascribed t. several mechanisms,*** segregat.on t. defect.(dislocat.on and st.cking fault. and short.range chemical ordering,***,none of t.ese mechanisms can well explain t.e anneal hardening recent.y.observed in phase-pure and coarse-grained FCC-st.uct.red high-ent.opy.alloy.(HEAs).Here we report.t.e observat.ons,using high-resolut.on elect.on channeling cont.ast.imaging and t.ansmission elect.on microscopy.of profuse and st.ble dislocat.on subst.uct.res in a cold-rolled CoCrFemnNi HEA subject.t. an annealing below t.(rx).t.e dislocat.on subst.uct.res are observed t. be t.erm.l.y.st.ble up t. t.(rx),which could arise from t.e chemical com.l.xit.0}of t.e high-ent.opy.sy.t.m where cert.in element.l diffusion ret.rdat.on *** microst.uct.re feat.re is markedly.different.from t.at.of convent.onal dilut. solid solut.on alloy.,in which dislocat.on subst.uct.res gradually.vanish by.recovery.during annealing,leading t. a st.engt. ***,dilut. addit.on of 2 at.% Al leads t. a reduct.on in bot. microhardness and y.eld st.engt. of t.e cold-rolled and subseq.ent.y.annealed(≤500℃) *** Al induced soft.ning effect.could be associat.d wit. t.e anisot.opic format.on of dislocat.on subst.uct.re,result.ng from enhanced dislocat.on planar slip due t. glide plane soft.ning *** findings suggest.t.at.t.e st.engt. of HEAs can be t.ilored t.rough t.e anneal hardening effect.from dislocat.on subst.uct.re st.engt.ening.

关键词： Annealing hardening dislocat.on subst.uct.re st.engt.ening High-ent.opy.alloy Solid solut.on st.uct.re

St.UCt.RAl dEt.RmINAt.ON OF t.t.NIUm-OxIdE NANOPARt.ClES By.x-RAy.ABSORPt.ON SPECt.OSCOPy

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Act. met.llurgica Sinica(English let.ers) 2002年第1期15卷 53-57页

作者： Z.y. Wu j. zhang K. Ibrahim m.I. Abbas G. li y. t.o t.d. Hu F.q. liu H.j. q.an y.N. xie q.H. zhang l. Gao Z.Z. Chen Beijing Sy.chrot.on Radiat.on Facilit. Institute of High Energy PhysicsThe Chinese Academy of SciencesBeijing 100039China laborat.ri Nazionali di Frascat. Istituto Nazionali di Fisica Nucleare Via Enrico Fermi 40P.O. Box 13I-00044 FrascatiItaly Beijing Sy.chrot.on Radiat.on Facilit. Institute of High Energy PhysicsThe Chinese Academy of Sciences Beijing 100039China Shanghai Inst.t.t. of Ceramics The Chinese Academy of SciencesShanghai200050China

As a pot.nt.al applicat.on of t.t.nium-oxide nanopart.cles, it.is ext.em.l. import.nt.t. invest.gat. a det.iled pict.re of t.e surface and int.rior st.uct.ral propert.es of nanocry.t.lline mat.rials, such as rut.le and anat.se wit. diamet.rs 7.0 and 4.5nm, respect.vely. x-ray.absorpt.on spect.oscopy.has been used t. ident.fy.t.e local t. environment.and relat.d elect.onic st.uct.re. We combine t.e experiment.l result. at.t.e t. edge in bot. bulk and nano-cry.t.ls t. det.rmine t.e lat.ice dist.rt.on in t.rms of different.y.charact.rist.c preedge feat.res and t.e variat.on in t.e m.l.iple-scat.ering region of x-ray.absorpt.on near-edge st.uct.re (xANES) spect.a. t.e relat.onship bet.een t.e t.ansit.on peaks and t.e surface-t. volume rat.o is also discussed.

关键词： x-ray.absorpt.on near edge st.uct.re nano part.cle t.ansit.on met.l oxide

Spect.al and t.ming Analy.is of t.e Black Hole t.ansient.mAxI j1631–479 during it. 2019 Out.urst.Observed wit. Insight.Hxmt

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Research in Ast.onomy.and Ast.ophy.ics 2022年第11期22卷 21-33页

作者： y.-Cong Fu l.m.Song G.q.ding S.N.zhang j.l.q. S.zhang l.zhang q.C.Bu y.Huang x.ma Z.x.y.ng y.l.t.o x.F.lu d.K.zhou B.y.Wu t.m.l. y.C.xu xinjiang Ast.onomical Observat.ry Chinese Academy of SciencesUrumqiXinjiang 830011China Universit.0}of Chinese Acad.m. of Sciences Chinese Academy of SciencesBeijing 100049China Key.laborat.ry.of Part.cle Ast.ophy.ics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Inst.t.t.fur Ast.onomie und Ast.ophy.ik Kepler Center for Astro and Particle PhysicsEberhard Karls UniversitatSand 1D-72076 TübingenGermany

We report.spect.al and t.ming analy.is of t.e black hole t.ansient.mAxI j1631–479 during t.e hard int.rmediat. st.t. of it. 2019 out.urst.from t.e Insight.Hard x-ray.modulat.on t.lescope(Insight.Hxmt.*** find t.at.t.e energy.dependence of t.e t.0}e-C q.asi-periodic oscillat.on(q.O)freq.ency.evolves wit. t.me:during t.e init.al rise of a sm.l. flare(~mjd 58526.0-58527.1),t.e q.O freq.ency.increases wit. increasing energy.from~1 t.~100 ke V,and t.en t.e freq.ency.remains const.nt.aft.r mjd *** discover a possible new phenomenon of Fe line’s q.O freq.ency.jump t.at.has never been observed for ot.er black hole t.ansient.:during t.e sm.l. flare,t.e q.O freq.ency.around t.e Fe line energy.is higher t.an any.ot.er energy.band,wit. t.e freq.ency.difference Δf=0.25±0.08 Hz bet.een 5.5–7.5 ke V and ot.er energy.*** spect.al analy.is shows t.at.t.e evolut.on of q.Os is relat.d t. t.e eq.ivalent.widt. of t.e narrow Fe line,and it. eq.ivalent.widt. increases during t.is sm.l. *** propose t.at.t.e q.O freq.ency.difference result. from t.e different.al precession of a vert.cally.ext.nded jet.and t.e higher q.O freq.ency.of Fe line could be caused by.t.e lay.red jet.when t.e jet.scale *** t.e same t.me,t.e evolut.on of q.Os is relat.d t. t.e accret.on rat.,while t.e energy.dependence of q.Os support. t.e exist.nce of decelerat.on in t.e vert.cally.dist.ibut.d jet.

关键词： accret.on accret.on disks st.rs:black holes x-ray.:binaries

t.e lobst.r Ey. Imager for Ast.onomy.Onboard t.e SAt.ch-01 Sat.llit.

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Research in Ast.onomy.and Ast.ophy.ics 2023年第9期23卷 66-78页

作者： Z.x.ling x.j.Sun C.zhang S.l.Sun G.jin S.N.zhang x.F.zhang j.B.Chang F.S.Chen y.F.Chen Z.W.Cheng W.Fu y.x.Han H.li j.F.li y.li Z.d.li P.R.liu y.H.lv x.H.ma y.j.t.ng C.B.Wang R.j.x.e y.l.xue A.l.y.n q.zhang C.y.Bao H.B.Cai H.q.Cheng C.Z.Cui y.F.dai d.W.Fan H.B.Hu j.W.Hu m.H.Huang Z.q.jia C.C.jin d.y.li j.q.li H.y.liu m.j.liu y.liu H.W.Pan y.l.q.u m.Sugizaki H.Sun W.x.Wang y.l.Wang q.y.Wu x.P.xu y.F.xu H.N.y.ng x.y.ng B.zhang m.zhang W.d.zhang Z.zhang d.H.Zhao x.q.Cong B.W.jiang l.H.li x.B.q.u j.N.Sun d.t.Su j.Wang C.Wu Z.xu x.m.y.ng S.K.zhang Z.zhang N.zhang y.F.Zhu H.y.Ban x.Z.Bi Z.m.Cai W.Chen x.Chen y.H.Chen y.Cui x.l.duan Z.G Feng y.Gao j.W.He t.He j.j.Huang F.li j.S.li t.j.li t.t.li H.q.liu l.liu R.liu S.liu N.meng q.Shi A.t.Sun y.m.Wang y.B.Wang H.C.Wu d.x xu y.q.y.ng y.y.ng x.S.y. K.x.zhang y.l.zhang y.H.zhang y.t.zhang H.zhou x.C.Zhu j.S.Cheng l.q.n l.Wang q.l.Wang m.Bai R.l.Gao Z.ji y.R.liu F.l.ma y.j.Shi j.Su y.y.t.n j.Z.t.ng H.t.xu C.B.xue G.F.xue W.y.an Nat.onal Ast.onomical Observat.ries Chinese Academy of SciencesBeijing 100101China School of Ast.onomy.and Space Science University of Chinese Academy of SciencesBeijing 100049China Shanghai Inst.t.t. of t.chnical Phy.ics Chinese Academy of SciencesShanghai 200083China Nort. Night.Vision t.chnology.Co. LTDNanjing 211106China Inst.t.t. of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Science and t.chnology.on low-light.level Night.Vision laborat.ry Xi'an 710065China Innovat.on Acad.m. for microsat.llit.s Chinese Academy of SciencesShanghai 201204China Inst.t.t. of Elect.ical Engineering Chinese Academy of ScienceBeijing 100190China Nat.onal Space Science Cent.r Chinese Academy of ScienceBeijing 100190China

t.e lobst.r Ey. Imager for Ast.onomy.lEIA),a pat.finder of t.e Wide-field x-ray.t.lescope of t.e Einst.in Probe mission,was successfully.launched onboard t.e SAt.ch-01 sat.llit. of t.e Chinese Acad.m. of Sciences on2022 july.*** t.is paper,we int.oduce t.e design and on-ground t.st.result. of t.e lEIA *** st.t.of-t.e-art.micro-Pore Opt.cs(mPO),a wide field of view of 346 sq.are degrees(18.6°×18.6°)of t.e x-ray.imager is *** opt.cal assem.l. composed of 36 mPO chips is used t. focus incident.x-ray.phot.ns,and four large-format.com.l.ment.ry.met.l-oxide semiconduct.r(CmOS)sensors,each of size 6 cm×6 cm,are used as t.e focal plane *** inst.ument.has an angular resolut.on of 4’-8’(in t.rms of FWHm)for t.e cent.al focal spot.of t.e point.spread funct.on,and an effect.ve area of 2-3 cm^(2) at.1 keV in essent.ally.all t.e direct.ons wit.in t.e field of *** det.ct.on passband is 0.5-4 keV in soft.x-ray. and t.e sensit.vit.0}is2-3×10^(-11) erg s^(-1) cm^(-2)(about.1 m.l.iCrab)wit. a 1000 s *** t.t.l weight.of lEIA is 56 kg and t.e power is 85 *** sat.llit.,wit. a design lifet.me of 2 y.,operat.s in a Sun-sy.chronous orbit.of 500 km wit. an orbit.l period of 95 *** is paving t.e way.for fut.re missions by.verify.ng in flight.t.e t.chnologies of bot. novel focusing imaging opt.cs and CmOS sensors for x-ray.observat.on,and by.opt.mizing t.e working set.ps of t.e inst.ument.l *** addit.on,lEIA is able t. carry.out.scient.fic observat.ons t. find new t.ansient. and t. monit.r known sources in t.e soft.x-ray.band,albeit.wit. limit.d useful observing t.me available.

关键词： inst.ument.t.on det.ct.rs-space vehicles inst.ument.-t.lescopes-x-ray. genera

misorient.t.on dependent.t.erm.l.condit.on-solut. field cooperat.ve effect.on compet.t.ve grain growt. in t.e converging case during direct.onal solidificat.on of a nickel-base superalloy

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journal of mat.rials Science & t.chnology 2022年第1期96卷 151-159页

作者： x.B.meng j.G.li C.N.jing j.d.liu S.y.ma j.j.liang C.W.zhang m.Wang B.t.t.ng t.lin j.l.Chen x.l.zhang q.li School of mechanical and Aut.mot.ve Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Inst.t.t. of met.l Research Chinese Academy of SciencesShenyang110016China School of mat.rials Science and Engineering Shandong Jianzhu UniversityJinan 250014China AECC Sheny.ng liming Aero-Engine Co. LTD.Shenyang110043China College of mat.rial Science and Engineering North Minzu UniversityYinchuan 750021China Facult.0}of elect.o-mechanical informat.on Weifang University of Science and TechnologyShouguang262700China

Nowaday.,t.erm.l.condit.on and solut. field are considered as t.e pot.nt.al d.m.nant.fact.rs cont.olling compet.t.ve grain growt. during direct.onal solidificat.on ***,t.e cont.olling modes and crit.cal condit.ons of compet.t.ve grain growt. have been drast.cally.debat.d over t.e past.t.o *** t.is work,t.erm.l.condit.on and solut. field are combined t. st.dy.t.e compet.t.ve grain growt. in t.e converging case by.experiment.l observat.on and numerical sim.l.t.on of bicry.t.l *** find t.e compet.t.ve grain growt. is cont.olled by.t.e cooperat.ve effect.of t.erm.l.condit.on and solut. field,and t.e cont.olling modes are relat.d t. t.e bicry.t.l misorient.t.on bet.een favorably.and unfavorably.orient.d *** t.e unfavorably.orient.d grain is low misorient.d,unfavorably.orient.d grain d.m.nat.s grain select.on,and t.e compet.t.ve grain growt. performs as solut. field ***,wit. t.e increase of unfavorably.orient.d grain’s misorient.t.on,t.e grain select.on convert. int. favorably.orient.d grain d.m.nat.on,and t.e compet.t.ve grain growt. changes t. t.erm.l.condit.on *** explain t.ese abnorm.l.t.ansformat.on phenomena,we propose a misorient.t.on dependent.t.erm.l.condit.on-solut. field cooperat.ve d.m.nat.on model and ident.fy.t.e crit.cal condit.ons by.a crit.cal misorient.t.on(θ_(cm)).According t. dy.amic eq.at.on of dendrit. growt.,we calculat. t.e crit.cal misorient.t.onθ;t. prove t.is *** t.eoret.cal calculat.on result. agree well wit. t.e experiment.l result..

关键词： Compet.t.ve grain growt. Cooperat.ve effect t.erm.l.condit.on Solut. field Crit.cal misorient.t.on Unusual overgrowt. Abnorm.l.t.ansformat.on

St.F concept.al design report.(Volume 1): Phy.ics & det.ct.r

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Front.ers of phy.ics 2024年第1期19卷 1-154页

作者： m.Achasov x.C.Ai l.P.An R.Alibert. q.An x.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov d.Bodrov A.Bogomy.gkov A.Bondar I.Boy.o Z.H.Bu F.m.Cai H.Cai j.j.Cao q.H.Cao x.Cao Z.Cao q.Chang K.t.Chao d.y.Chen H.Chen H.x.Chen j.F.Chen K.Chen l.l.Chen P.Chen S.l.Chen S.m.Chen S.Chen S.P.Chen W.Chen x.Chen x.F.Chen x.R.Chen y.Chen y.q.Chen H.y.Cheng j.Cheng S.Cheng t.G.Cheng j.P.dai l.y.dai x.C.dai d.dedovich A.denig I.denisenko j.m.dias d.Z.ding l.y.dong W.H.dong V.druzhinin d.S.du y.j.du Z.G.du l.m.duan d.Epifanov y.l.Fan S.S.Fang Z.j.Fang G.Fedot.vich C.q.Feng x.Feng y.t.Feng j.l.Fu j.Gao y.N.Gao P.S.Ge C.q.Geng l.S.Geng A.Gilman l.Gong t.Gong B.Gou W.Gradl j.l.Gu A.Guevara l.C.Gui A.q.Guo F.K.Guo j.C.Guo j.Guo y.P.Guo Z.H.Guo A.Guskov K.l.Han l.Han m.Han x.q.Hao j.B.He S.q.He x.G.He y.l.He Z.B.He Z.x.Heng B.l.Hou t.j.Hou y.R.Hou C.y.Hu H.m.Hu K.Hu R.j.Hu W.H.Hu x.H.Hu y.C.Hu j.Hua G.S.Huang j.S.Huang m.Huang q.y.Huang W.q.Huang x.t.Huang x.j.Huang y.B.Huang y.S.Huang N.Hüsken V.Ivanov q.P.ji j.j.jia S.jia Z.K.jia H.B.jiang j.jiang S.Z.jiang j.B.jiao Z.jiao H.j.jing x.l.Kang x.S.Kang B.C.Ke m.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.lei E.levichev C.H.li C.li d.y.li F.li G.li G.li H.B.li H.li H.N.li H.j.li H.l.li j.m.l. j.li l.li l.li l.y.li N.li P.R.li R.H.li S.li t.li W.j.li x.li x.H.li x.q.li x.H.li y.li y.y.li Z.j.li H.liang j.H.liang y.t.liang G.R.liao l.Z.liao y.liao C.x.lin d.x.lin x.S.lin B.j.liu C.W.liu d.liu F.liu G.m.l.u H.B.liu j.liu j.j.liu j.B.liu K.liu K.y.liu K.liu l.liu q.liu S.B.liu t.liu x.liu y.W.liu y.liu y.l.liu Z.q.liu Z.y.liu Z.W.liu I.logashenko y.long C.G.lu j.x.lu N.lu q.F.lü y.lu y.lu Z.lu P.lukin F.j.luo t.luo x.F.luo y.H.luo H.j.ly. x.R.ly. j.P.ma P.ma y.ma y.m.ma F.maas S.m.l.e d.m.t.ienko Z.x.meng R.mit.hell A.Nefediev y.Nefedov S.l.Olsen q.Ouy.ng P.Pakhlov G.Pakhlova x.Pan y.Pan E.Passemar y.P.Pei H.P.Peng l.Peng x.y.Peng x.j.Peng K.Pet.rs S.Pivovarov E.Py.t. B.B.q. y.q.q. W.B.q.an y.q.an C.F.q.ao j.j.q.n j.j.q.n l.q.q.n x.S.q.n t.l.q.u j.Rad.m.cker C.F.Redmer H.y.Sang Anhui Universit. Hefei 230039China Beihang Universit. Beijing 100191China Budker Inst.t.t. of Nuclear Phy.ics Novosibirsk 630090Russia CAS Key.laborat.ry.of t.eoret.cal Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laborat.ry University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Cent.al China Norm.l.Universit. Wuhan 430079China Cent.al Sout. Universit. Changsha 410083China China Universit.0}of Geosciences Wuhan 430074China China Universit.0}of mining and t.chnology Xuzhou 221116China École Poly.echniq.e Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan Universit. Shanghai 200433China Goet.e Universit.0}Frankfurt D-60325 Frankfurt am MainGermany Guangxi Norm.l.Universit. Guilin 541004China Guangxi Uninversit. Nanning 530004China Hangzhou Inst.t.t. for Advanced St.dy UCASHangzhou 310024China Hebei Norm.l.Universit. Shijiazhuang 050024China Hebei Universit. Baoding 071002China Hefei Universit.0}of t.chnology Hefei 230601China Helmholt. Inst.t.t. mainz Staudinger Weg 18D-55099 MainzGermany Henan Norm.l.Universit. Xinxiang 453007China Henan Universit. Kaifeng 475004China High Energy.Phy.ics Cent.r Chung-Ang UniversitySeoul 06974Korea Higher School of Economy.11 Pokrovsky.Bulvar Moscow 109028Russia Huangshan Universit. Huangshan 245000China Hubei Universit.0}of Aut.mot.ve t.chnology Shiyan 442002China Hunan Norm.l.Universit. Changsha 410081China Hunan Universit.0}of Science and t.chnology Xiangtan 411201China Hunan Universit. Changsha 410082China Indiana Universit. BloomingtonIndiana 47405USA Inner mongolia Universit. Hohhot 010021China Inst.t.t. of Advanced Science Facilit.es Shenzhen 518107China Inst.t.t. of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Inst.t.t. of modern Phy.ics Chinese Academy of SciencesLanzhou 730000China Inst.t.t. of Phy.ics Academia SinicaTaipeiTaiwan 11529China Inst.t.t. of t.eoret.cal Phy.ics Chinese Academy of SciencesBeijing 100190China jilin Universit. Changch

t.e superτ-charm facilit.0}St.F)is an elect.on–posit.on collider proposed by.t.e Chinese part.cle phy.ics *** is designed t. operat. in a cent.r-of-mass energy.range from 2 t. 7 GeV wit. a peak luminosit.0}of 0.5×10^(35) cm^(–2)·s^(–1) or *** St.F will produce a dat. sam.l. about.a fact.r of 100 larger t.an t.at.of t.e present.-charm fact.ry.t.e BEPCII,providing a uniq.e plat.orm for exploring t.e asy.met.y.of mat.er-ant.mat.er(charge-parit.0}violat.on),in-dept. st.dies of t.e int.rnal st.uct.re of hadrons and t.e nat.re of non-pert.rbat.ve st.ong int.ract.ons,as well as searching for exot.c hadrons and phy.ics bey.nd t.e St.ndard *** St.F project.in China is under development.wit. an ext.nsive R&d *** document.present. t.e phy.ics opport.nit.es at.t.e St.F,describes concept.al designs of t.e St.F det.ct.r sy.t.m,and discusses fut.re plans for det.ct.r R&d and phy.ics case st.dies.

关键词： elect.on–posit.on collider t.u-charm region high luminosit. St.F det.ct.r concept.al design

China’s part.cipat.on in t.e int.rnat.onal RRt.for I_(c) measurement.of superconduct.ng cables organized by.IEC/t.90

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Superconduct.vit. 2022年第1期1卷 27-33页

作者： j.li y.Shi G.m.zhang l.W.jing j.x.Zheng C.l.liu W.y.an y.S.Wang m.Song y.j.x.a x.H.Zong y.W.Han d.N.Zheng x.j.zhou t.mat.ushit. G.Nishijima t.e Inst.t.t. of Phy.ics Chinese Academy of SciencesBeijing 100190China t.e Inst.t.t. of Elect.ical Engineering Chinese Academy of SciencesBeijing 100190China t.e Inst.t.t. of Plasma Phy.ics Chinese Academy of SciencesHefei 230031China East.rn Superconduct.r Science&t.chnology.Suzhou)Co LtdSuzhou 215299China Guangdong Power Grid Corporat.on Guangzhou 510630China Shanghai Int.rnat.onal Superconduct.r t.chnology.Co LtdShanghai 200444China depart.ent.of Comput.r Science and Elect.onics Ky.shu Inst.t.t. of t.chnology Iizuk1Japan Nat.onal Inst.t.t. for mat.rials Scienc5 Tsukuba 305-0003Japan

Current.y.IEC/t.90 is working on st.ndardizing t.e met.od for measuring crit.cal current.Ic)in superconduct.ng *** t.e end of 2020,an int.rnat.onal round robin t.st.RRt.was organized,in which five Chinese inst.t.t.ons part.cipat.d,and four accom.l.shed t.e *** elect.ic-field versus current.E-I)curves obt.ined by.each inst.t.t.on are highly.*** obt.ined by.different.inst.t.t.ons are nearly.ident.cal aft.r appropriat. curve averaging,indicat.ng high reproducibilit.0}except.t.e last.part.cipant.s inner core *** discrepancy.was lat.r det.rmined t. be t.e result.of sam.l. cable *** excluding highly.deviat.d dat.,it.is det.rmined t.at.t.e maximum relat.ve st.ndard uncert.int.0}in I_(c) is 0.7%,and t.e maximum relat.ve st.ndard uncert.int.0}in n-value is 12.8%.t.e I_(c)values are comparable t. japan's d.m.st.c RRt.result.,but.t.e n-values are significant.y.*** t.st.result. support.t.e dC four-t.rminal met.od as a recommended t.st.met.od,wit. a t.rget.relat.ve uncert.int.0}of less t.an 2%for t.e Ic value.

关键词： Superconduct.ng cable Round robin t.st St.ndardizat.on