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Compositional complexity dependence of dislocation density and mechanical pr.per.ies in high entr.py alloy systems

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Pr.gr.ss in Natur.l Science:Mater.als Inter.ational 2020年第4期30卷 545-551页

作者： P.Thir.thipviwat G.Song j.Bednar.ik U.Kühn T.Gemming K.Nielsch j.Han Leibniz Institute of Solid State and Mater.als r.sear.h (IFW Dr.sden) Fr.ntier.r.sear.h Center.for.Applied Atomic Sciences Ibaraki University Division of Advanced Mater.als Engineer.ng and Institute for.r.r. metals Kongju National University Institute of Physic Pavol Jozef Safarik University in Ko?ice Deutsches Elektr.nen-Synchr.tr.n (DESY) Institute of Mater.als Science Technische Universit?t Dresden Institute of Applied Physics Technische Universit?t Dresden Kor.a Institute for.r.r. Metals Korea Institute of Industrial Technology (KITECH)

This study focuses on a quantitative analysis of dislocation accumulation after.cold plastic defor.ation and mechanical pr.per.ies of Fe Ni Co Cr.Mn and Ti Nb Hf Ta Zr.high entr.py alloys(HEAs) which ar. single phase fcc and bcc solid solutions, r.spectively. In or.er.to study the r.le of compositional complexity fr.m unar. to quinar. compositions on dislocation accumulation and mechanical pr.per.ies after.plastic defor.ation, the single solid solution phase for.ing sub-alloys of the two HEAs wer. investigated. All studied samples r.vealed a lar.e plastic defor.ability under.cold-r.tar. swaging pr.cess by 85–90% ar.a r.duction without inter.ediate annealing. The dislocation density of all studied samples, deter.ined by Williamson-Hall method on synchr.tr.n X-r.y diffr.ction patter.s, wer. between 1014-1015m-2dependent on the alloy composition. The level of dislocation density after.plastic defor.ation is not only affected by the number.of constituent element but the lattice distor.ion and intr.nsic pr.per.ies in ter.s of stacking fault ener.y, modulus misfit, and melting point also impact the dislocation stor.ge. The level of dislocation density deter.ines the level of mechanical pr.per.ies because of a r.sistance to dislocation motions. The har.ness and yield compr.ssive str.ngth of the studied samples ar. pr.por.ional to the level of dislocation density.

关键词： High entr.py alloys Dislocation density Synchr.tr.n Xr. Mechanical pr.per.ies

Laser.additive manufactur.d high-per.or.ance Fe-based composites with unique str.ngthening str.ctur.

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jour.al of Mater.als Science & Technology 2021年第30期89卷 242-252页

作者： Hongyu Chen Dongdong Gu Liang Deng Tiwen Lu Uta Kühn Konr.d Kosiba College of Mater.als Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China jiangsu Pr.vincial Engineer.ng Labor.tor. for.Laser.Additive Manufactur.ng of High-Per.or.ance Metallic Components Nanjing University of Aeronautics and AstronauticsNanjing 210016China Leibniz IFW Dr.sden Institute for Complex MaterialsP.O.Box 270116D-01069 DresdenGermany

Steel matr.x composites(SMCs),r.infor.ed by cer.mic par.icles,have r.ceived a consistent attention in r.cent *** conventional methods to pr.par. SMCs is gener.lly challenging,and the mechanical pr.per.ies of conventionally fabr.cated SMCs ar. *** this study,we successfully fabr.cated highper.or.ance SMCs by laser.powder.bed fusion(LPBF)of a composite powder.consisting of Fe-based alloy powder.and submicr.n-sized WC *** effect of laser.ener.y density on the phase for.ation,micr.str.ctur.l evolution,over.ll density and r.sulting mechanical pr.per.ies of LPBF-fabr.cated composites was *** pr.sent r.sults show that a novel Fe_(2)W_(4)C car.idic networ. pr.cipitates in the solidified micr.str.ctur. entailing segr.gations along the boundar.es of cellular.*** pr.sence of this car.idic networ. hamper. the gr.wth of sub-gr.ins even at elevated temper.tur.s,and hence,stabilizes the gr.in size though pr.par.d at a br.ad r.nge of differ.nt ener.y *** exact distr.bution of the Fe_(2)W_(4)C car.ides depends on the employed laser.ener.y densities,as for.instance they ar. mor. unifor.ly distr.buted at higher.ener.y *** density of LPBF samples r.aches the maximum value of 99.4%at 150 j/mm^(3).In this par.meter.set,high micr.har.ness of~753 HV,compr.ssion str.ngth of~3350 MPa and fr.ctur. str.in of~24.4%ar. *** enhanced mechanical pr.per.ies ar. ascr.bed to less metallur.ical defects,higher.volume fr.ction of the mar.ensitic phase and incr.asing pile-up dislocations r.sulting fr.m the pinning effect by Fe_(2)W_(4)C car.ide.

关键词： Laser.additive manufactur.ng Laser.powder.bed fusion Steel matr.x composite Micr.str.ctur.s Mechanical pr.per.ies

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Deter.ination of the number.ofψ(3686)events taken at BESⅢ

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Chinese Physics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Adlar.on O.Afedulidis X.C.Ai r.Aliber.i A.Amor.so Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-r.Bao V.Batozskaya K.Begzsur.n N.Ber.er.M.Ber.owski M.Ber.ani D.Bettoni F.Bianchi E.Bianco A.Bor.one I.Boyko r.A.Br.er. A.Br.eggemann H.Cai X.Cai A.Calcater.a G.F.Cao N.Cao S.A.Cetin j.F.Chang G.r.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen H.Y.Chen M.L.Chen S.j.Chen S.L.Chen S.M.Chen T.Chen X.r.Chen X.T.Chen Y.B.Chen Y.Q.Chen Z.j.Chen Z.Y.Chen S.K.Choi G.Cibinetto F.Cossio j.j.Cui H.L.Dai j.P.Dai A.Dbeyssi r.E.de Boer.D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mor. B.Ding X.X.Ding Y.Ding Y.Ding j.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Y.Y.Duan Z.H.Duan P.Egor.v Y.H.Fan j.Fang j.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang r.Far.nelli L.Fava F.Feldbauer.G.Felici C.Q.Feng j.H.Feng Y.T.Feng M.Fr.tsch C.D.Fu j.L.Fu Y.W.Fu H.Gao X.B.Gao Y.N.Gao Yang Gao S.Gar.olino I.Gar.ia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Ger.abeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gr.dl S.Gr.migna M.Gr.co M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.j.Guo r.P.Guo Y.P.Guo A.Guskov j.Gutier.ez K.L.Han T.T.Han F.Hanisch X.Q.Hao F.A.Har.is K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Her.ld T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.r.Hou Z.L.Hou B.Y.Hu H.M.Hu j.F.Hu S.L.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.Hölzken N.Hüsken N.in der.Wiesche j.jackson S.janchiv j.H.jeong Q.ji Q.P.ji W.ji X.B.ji X.L.ji Y.Y.ji X.Q.jia Z.K.jia D.jiang H.B.jiang P.C.jiang S.S.jiang T.j.jiang X.S.jiang Y.jiang j.B.jiao j.K.jiao Z.jiao S.jin Y.jin M.Q.jing X.M.jing T.johansson S.Kabana N.Kalantar.Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatr.an A.Khoukaz r.Kiuchi O.B.Kolcu B.Kopf M.Kuessner.X.Kui N.Kumar.A.Kupsc W.Kühn j.j.Lane P.Lar.n L.Lavezzi T.T.Lei Z.H.Lei M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.B.Li H.j.Li H.N.Li Hui Li j.r.Li j.S.Li Ke Li L.j.Li L.K.Li Lei Li M.H.Li P.r.Li Q.M.Li Q.X.Li r.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Z.Li Xi Institute of High Ener.y Physics Beijing 100049China Beihang Univer.ity Beijing 100191China Bochum r.hr.Univer.ity D-44780BochumGermany Budker.Institute of Nuclear.Physics SB r.S(BINP) Novosibirsk 630090Russia Car.egie Mellon Univer.ity PittsburghPennsylvania 15213USA Centr.l China Nor.al Univer.ity Wuhan 430079China Centr.l South Univer.ity Changsha 410083China China Center.of Advanced Science and Technology Beijing 100190China China Univer.ity of Geosciences Wuhan 430074China Chung-Ang Univer.ity Seoul06974Republic of Korea COMSATS Univer.ity Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan Univer.ity Shanghai 200433China GSI Helmholtzcentr. for.Heavy Ion r.sear.h GmbH D-64291DarmstadtGermany Guangxi Nor.al Univer.ity Guilin 541004China Guangxi Univer.ity Nanning 530004China Hangzhou Nor.al Univer.ity Hangzhou 310036China Hebei Univer.ity Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany Henan Nor.al Univer.ity Xinxiang 453007China Henan Univer.ity Kaifeng 475004China Henan Univer.ity of Science and Technology Luoyang 471003China Henan Univer.ity of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Nor.al Univer.ity Changsha 410081China Hunan Univer.ity Changsha 410082China Indian Institute of Technology Madr.s Chennai 600036India Indiana Univer.ity BloomingtonIndiana 47405USA INFN Labor.tor. Nazionali di Fr.scati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sezione di Fer.ar. (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner.Mongolia Univer.ity Hohhot 010021China Institute of Moder. Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile jilin Univer.ity Changchun 130012China joha

The number.ofψ(3686)events collected by the BESⅢdetector.dur.ng the 2021 r.n per.od is deter.ined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)hadr.nic *** uncer.ainty is systematic and the statistical uncer.ainty is ***,the number. ofψ(3686)events collected dur.ng the 2009 and 2012r.n per.ods ar. updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** number. ar. consistent with the pr.vious measur.ments within one standar. *** total number.ofψ(3686)events in the thr.e data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive pr.cess Hadr.nic events BESⅢdetector

Micr.str.ctur.l Evolution and Mechanical Behaviour.of Metastable Cu-Zr.Co Alloys

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jour.al of Mater.als Science & Technology 2014年第6期30卷 584-589页

作者： S.Pauly K.Kosiba P.Gar.ar.lla B.Escher.K.K.Song G.Wang U.Kühn j.Ecker. IFW Dr.sden Institut für Komplexe Materialien HelmholtzstraBe 20D-01069 Dresden Germany Labor.tor. for.Micr.str.ctur.s Shanghai University TU Dr.sden Institut für WerkstoffwissenschaftD-01062 Dresden Germany

Thr.e differ.nt Cu-Zr.Co alloys, namely Cu40Zr.7.5Co22.5, Cu42.5Zr.5Co12.5 and Cu49Zr.9Co2, wer. obtained by r.pid cooling. The micr.str.ctur. and phase for.ation of as-cast r.ds with diameter. of 2 mm ar. compar.d with those of the r.spective ingots. An incr.asing Co content stabilises the B2 CuZr.phase and leads to the pr.cipitation of a ter.ar. Cu-Zr.Co phase. The var.ation of the cooling r.te affects the size of the B2 dendr.tes as well as the volume fr.ction and the mor.hology of the inter.endr.tic phases. The mechanical pr.per.ies wer. deter.ined in compr.ssion and all alloys show a cer.ain plastic defor.ability despite the pr.sence of sever.l binar. and ter.ar. inter.etallic phases. The defor.ation mechanisms ar. discussed on the basis of the micr.str.ctur.s and the constituent phases.

关键词： Bulk metallic glasses Micr.str.ctur.l evolution Mechanical behaviour

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接触斑点对蜗轮副承载能力的影响

机械传动 2014年第10期38卷 9-13,17页

作者： Her.es j. Hhn B.-r. Stahl K. Monz A. 陈金山 SEW-Eur.dr.ve传动设备德国有限公司德国布鲁克塞尔76646 慕尼黑工业大学齿轮研究中心(FZG) 德国加兴85748 德国IMO集团公司德国格蕾姆斯多夫91350 浙江台玖精密机械有限公司浙江嘉兴314500

根据现有的技术发展水平,只有当蜗轮副的齿面完全啮合,才能评估其抗点蚀能力。但实际上,在蜗轮与蜗杆初始啮合时,它们只有一个较小的啮合斑点。由于时间和经费的关系,通过长时间轻载跑合使其达到完全啮合一般不太可能。在初期,由于接触... 详细信息

根据现有的技术发展水平,只有当蜗轮副的齿面完全啮合,才能评估其抗点蚀能力。但实际上,在蜗轮与蜗杆初始啮合时,它们只有一个较小的啮合斑点。由于时间和经费的关系,通过长时间轻载跑合使其达到完全啮合一般不太可能。在初期,由于接触面较小,齿部的接触应力会很大,有可能会在啮合处的表面产生一条微观裂纹,随后裂纹继续发展使材料从蜗轮上剥落,从而形成点蚀。较小的啮合斑点与点蚀的关系迄今还没有被系统的分析与研究,因此蜗轮轮齿也不能很好的进行优化。通过理论和实践相结合,提一种新的、可适用于不同尺寸、不同接触斑点位置以及齿形的计算方法,以弥补这一空白领域。

关键词：蜗轮蜗杆点蚀

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r.le of the intr.cellular.r.ceptor.domain of gp130 (exon 17) in human inflammator. bowel disease

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Wor.d jour.al of Gastr.enter.logy 2005年第8期11卷 1196-1199页

作者： Chr.stoph j.Auer.hammer.Kathr.n Zitzmann Fabian Schnitzler.julia Seider.r.Peter.Lohse Geor.e Vlotides Dieter.Engelhar.t Michael Sackmann Bur.har. G(o|¨)ke Thomas Ochsenkühn Depar.ment of Inter.al Medicine Ⅱ-Gr.sshader. Depar.ment of Clinical Chemistr.-Gr.sshader.

AIM: To study the r.le of the intr.cellular.r.ceptor.domain of gp130 in human inflammator. bowel disease (IBD).METHODS: We amplified and sequenced the complete exon 17 of the human gp130 gene in 146 patients with IBD. Accor.ing to clinical and histopathological signs,the 146 patients with IBD wer. classified as having Cr.hn's disease (n = 73) or.ulcer.tive colitis (n = 63),or.as indeter.inate status (n = 10).r.SULTS: No mutations in exon 17 of the gp130 gene could be detected in any of the 146 patients with IBD ***: Ther. is no evidence that mutations in exon 17 of the gp130 gene ar. involved in the pathogenesis of human IBD.

关键词： Exon 17 Inflammator. bowel disease gp130 gene

No r.lationship between biopsy sites near.the main testicular.vessels or.r.te testis and successful sper. r.tr.eval using conventional or.micr.dissection biopsies in 220 non-obstr.ctive azoosper.ic men

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Asian jour.al of Andr.logy 2013年第6期15卷 795-798,I0009页

作者： j Ullr.ch Schwar.er.Heiko Steinfatt Heiko Steinfatt Manfr.d Schleyer.Fr.nk M Kōhn Klaus Fiedler., Ir.ne von Her.wig Gottfr.ed Kr.smann Wolfgang Wür.el Andr.logie Centr.m MOnchen MOnchen D-81241 Germany Kinder.unsch Centr.m MOnchen MOnchen D-81241 Germany Andr.logicum MOnchen MOnchen D-80331 Germany

In 220 consecutive patients with non-obstr.ctive azoosper.ia, sper. r.tr.eval was attempted by a combination of conventional and micr.dissection testicular.sper. extr.ction （TESE）. For.sper. r.tr.eval, 2-3 conventional biopsies wer. per.or.ed followed by a micr.dissection TESE in cases of negative conventional biopsies. Dur.ng the sur.er., the vasculatur. of the testis was assessed using the oper.tive micr.scope, and the location of positive biopsies was r.gister.d in r.lation to the blood supply. The over.ll sper. r.tr.eval r.te was 58.2%. Fr.m the initial conventional biopsies, sper. could be r.tr.eved in 46.8% of the patients. With micr.dissection TESE, sper. could be r.tr.eved fr.m an additional 11.4% of the patients. The fur.her.use of micr.dissection TESE impr.ved the sper. r.tr.eval r.te significantly （P=0.017）. No significant accumulation of positive biopsies was found towar.s the r.te testis or.the main testicular.vessels.

关键词： intr.cytoplasmic sper. injection male infer.ility micr.dissection testicular.sper. extr.ction non-obstr.ctiveazoosper.ia sper. r.tr.eval

Phase for.ation of a biocompatible Ti-based alloy under.kinetic constr.ints studied via in-situ high-ener.y X-r.y diffr.ction

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Pr.gr.ss in Natur.l Science:Mater.als Inter.ational 2020年第3期30卷 432-436页

作者： Konr.d Kosiba Andr. r.thkir.h junhee Han Liang Deng Benjamin Escher.Gang Wang Uta Kühn jozef Bednar.ik Leibniz IFW Dr.sden Institute for Complex Materials DESY Photon Science 3. Kor.a Institute of Industr.al Technology (KITECH) Korea Institute for Rare Metals 4. Fraunhofer Institute for Photonic Microsystems IPMS Department of Engineering 5. Laboratory for Microstructures Institute of Materials Shanghai University 6. J. Safarik University in Kosice Institute of Physics Department of Condensed Matter Physics

The biocompatible Ti40Cu34Pd14Zr.0Sn2bulk metallic glass was r.pidly heated,also known as flash-annealed,at var.ing heating r.tes up to 1579 K/***,the phase for.ation was char.cter.zed via advanced in-situ highener.y X-r.y *** has been found that the evolving kinetic constr.ints can be used as a tool to deliber.tely alter.the cr.stalline phase *** novel pr.cessing r.ute per.its to select phases to cr.stallize to a pr.defined fr.ction and,thus,to potentially design the micr.str.ctur. of mater.als accor.ing to a specified ***,flash-annealing poses a unique synthesis r.ute to design mater.als with,for.instance,good biomechanical compatibility.

关键词： High-ener.y X-r.y diffr.ction Flash-annealing Phase for.ation Metallic glass Biocompatible Ti alloy

Effects of food quality on tr.de-offs among gr.wth, immunity and sur.ival in the gr.ater.wax moth Galler.a mellonella

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Insect Science 2015年第3期22卷 431-439页

作者： Indr.kis Kr.ms Sanita Kecko Katar.ina Kangassalo Fhionna r. Moor. Er.ks jankevics Inna Inashkina Tatjana Kr.ma Vilnis Lietuvietis Laila Meija Mar.us j. r.ntala Institute of Systematic Biology University of Daugavpils 5401 Daugavpils Latvia Institute of Ecology and Ear.h Sciences University of Tartu 51014 Tartu Estonia Depar.ment of Biology Section of Ecology University of Turku 20014 Turku Finland School of Psychology University of Dundee Dundee DD1 4HN UK Latvian Biomedical r.sear.h and Study Centr. 1067 RTga Latvia Depar.ment of Plant Pr.tection Institute of Agricultural and Environmental Sciences Estonian University of Life Science Tartu Estonia r.ga Str.dins Univer.ity 1007 Riga Latvia

The r.sour.es available to an individual in any given envir.nment ar. finite, and var.ation in life histor. tr.its r.flect differ.ntial allocation of these r.sour.es to competing life functions. Nutr.tional quality of food is of par.icular.impor.ance in these life histor. decisions. In this study, we tested tr.de-offs among gr.wth, immunity and sur.ival in 3 gr.ups of gr.ater.wax moth （Galler.a mellonella） lar.ae fed on diets of high and aver.ge nutr.tional quality. We found r.pid gr.wth and weak immunity （as measur.d by encapsulation r.sponse） in the lar.ae of the high-ener.y food gr.up. It took longer.to develop on food of aver.ge nutr.tional quality. However. encapsulation r.sponse was str.nger.in this gr.up. The lar.ae gr.w longer.in the low-ener.y food gr.up, and had the str.ngest encapsulation r.sponse. We obser.ed the highest sur.ival r.tes in lar.ae of the low-ener.y food gr.up, while the highest mor.ality r.tes wer. obser.ed in the high-ener.y food gr.up. A significant negative cor.elation between body mass and the str.ngth of encapsulation r.sponse was found only in the high-ener.y food gr.up r.vealing significant competition between gr.wth and immunity only at the highest r.tes of gr.wth. The r.sults of this study help to establish r.lationships between types of food, its nutr.tional value and life histor. tr.its of G. mellonella lar.ae.

关键词： Galler.a mellonella gr.wth immunity life histor. nutr.tion sur.ival