检索结果-南通市图书馆

STUDY OF DYn.MIC RECRYSTALLIZATIOn.OF LOW CARBOn.STEEL In.THIn.SLAB COn.In.OUS ROLLIn. PROCESS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sin.ca(En.lish Letters) 2006年第4期19卷 265-270页

作者： x.K. Lian. x.J. sun Q.Y. Liu H. Don. State Key Laboratory of Advan.ed Steel Processes an. Products Central Iron and Steel Research Institute Beijing 100081 China

Combin.d with the techn.logical characteristics of thin.slab con.in.ous rollin. process （TSCR）, dyn.mic recrystallization.of an.ex.remely coarse austen.te of low carbon.steel is studied by Thermecmaster-Z hot simulator. By the an.lysis of true stress-strain.curves an. the observation.of microstructures at differen. deformation.stages, the critical stress an. critical strain.are determin.d un.er differen. deformation.con.ition.. The effect of Z parameter on.dyn.mic recrystallization.of coarse austen.te is studied. The microstructure evolution.in.real production.is also discussed.

关键词： TSCR (thin.slab con.in.ous rollin. process) coarse austen.te dyn.mic recrystallization

在线全文

学校读者我要写书评

暂无评论

近海单桩式风机地震响应分区耦合分析方法

岩土工程学报 2025年第1期47卷 96-105页

作者：徐小凤陈少林孙杰南京航空航天大学民航学院土木与机场工程系江苏南京211106 中国能源建设集团江苏省电力设计院有限公司江苏南京211106

海上风机是低碳可持续能源的重要战略选择之一,其地震安全性问题是急需解决的重要课题。将近海单桩式风机三维地震响应问题看作波动散射问题,结合人工边界条件实现海域场地的波动输入,并基于广义饱和多孔介质统一计算框架,发展了一套海... 详细信息

海上风机是低碳可持续能源的重要战略选择之一,其地震安全性问题是急需解决的重要课题。将近海单桩式风机三维地震响应问题看作波动散射问题,结合人工边界条件实现海域场地的波动输入,并基于广义饱和多孔介质统一计算框架,发展了一套海水-饱和海床-风机耦合作用高效分区分析方法,实现了综合考虑土-结构相互作用效应和流固耦合效应的近海单桩式风机三维地震响应分析,并分析了海水深度、海床波速和地震波入射角度对近海单桩式风机地震响应的影响。分析结果表明,海水深度和海床剪切波速的变化,一方面会改变自由场,另一方面会改变海域场地-风机体系的自振特性,从而影响风机结构的地震反应。当海水增加到某深度时,体系自振频率与地震波输入频率接近时,风机的地震响应会急剧增大;海床剪切波速对塔底弯矩的影响要比对位移的影响大;当入射角度增大时,塔顶水平向位移和加速度以及塔底弯矩均有不同程度的减小,塔顶竖向位移和加速度均有不同程度的增大。本文没有考虑海床和风机的非线性,考虑非线性时的影响规律需进一步研究。

关键词：近海单桩式风机地震响应分析土-结构相互作用流固耦合

Deformation.kin.in. an. highly localized n.n.crystallization.in.metastableβ-Ti alloys usin. cold forgin.

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Materials Scien.e & Techn.logy 2022年第25期120卷 53-64页

作者： Keer Li W.Chen.G.x.Yu J.Y.Zhan. S.W.x.n.J.x.Liu x.x.Wan. J.sun State Key Laboratory for Mechan.cal Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China n.rthwest In.titute for n.n.errous Metal Research Xi’an 710016China Baoji Titan.um In.ustry Co. Ltd.Baoji 721014China

Deformation.kin.in. as an.un.ommon.plastic deformation.mechan.sm has been.reported in.several materials while the relevan. microstructure evolution.an. grain.refin.men. behavior at a large strain.remain.un.lear so *** this study,the issue was systematically in.estigated by utilizin. cold forgin. to impose severe plastic deformation.SPD)on.Ti-11 V metastableβ-Ti *** is foun. that the formation.of kin. ban.s ex.erien.es dislocation.glidin.,pre-kin.in. an. the ripen.n. of pre-kin.s in.*** kin. ban.s are subsequen.ly thicken.d through the coalescen.e of multiple kin. ban.s in.a man.er of high *** dislocation.slip is developed as a domin.n. deformation.mechan.sm when.deformation.kin.in. is *** resultin. grain.refin.men. in.olves tran.verse breakdown.an. lon.itudin.l splittin. of dislocation.walls an. cells,which fragmen. kin. ban.s in.o smallβ-*** refin.men. of theβ-blocks is still govern.d by dislocation.activities,an. fin.lly n.n.grain. with a diameter of~15 n. are produced at a large strain.of ***,it is revealed that n.n.crystallization.is highly localized in.ide kin. ban.s while the outer microstructure main.ain. origin.l coarse *** localized refin.men. characterization.is ascribed to the in.rin.ic soft n.ture of kin. ban.s,shown.as low hardn.ss in.n.n.in.en.ation.*** in.rin.ic soften.n. of kin. ban.s is un.overed to origin.te from the in.er degraded dislocation.den.ity eviden.ed by both ex.erimen.al measuremen. an. theoretical *** fin.in.s en.ich fun.amen.al un.erstan.in. of deformation.kin.in.,an. shed some light on.ex.lorin. the deformation.accommodation.mechan.sms for metal materials at large strain..

关键词： Metastableβ-Ti alloys Deformation.kin.in. Microstructural evolution Grain.refin.men. Dislocation.

DIMEn.IOn.L In.TABILITY OF LD31 Al ALLOY WELDMEn.S AT ROOM TEMPERATURE An. AFTER THERMAL CYCLES

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sin.ca(En.lish Letters) 2004年第1期17卷 64-70页

作者： x.S.Liu H.Y.Fan. W.L.x. x.T.Tian.x.D.sun n.tion.l key Laboratory of Advan.ed Weldin. Production.an. Techn.logy Harbin Institute of Technology Harbin 150001ChinaNational key Laboratory of Advanced Welding Production and Technology Harbin Institute of Technology Harbin 150001ChinaNational key Laboratory of Advanced Welding Production and Technology Harbin Institute of Technology Harbin 150001ChinaNational key Laboratory of Advanced Welding Production and Technology Harbin Institute of Technology Harbin 150001ChinaHarbin First Mechanical Production Factory Harbin 150080China

The un.table dimen.ion.l distortion.of LD31 alumin.m alloy weldmen.s at room temperature an. after thermal cycles was studied by use of light in.erferen.e an. CMM(three-coordin.te measurin. machin.s). At the same time, distortion.mechan.sm was an.lyzed from the viewpoin. of mechan.cs an. micro structure. Ex.erimen.al results show that there ex.sts obvious differen.e of un.table dimen.ion.l distortion.between.LD31 welded specimen. un.er two con.ition. men.ion.d above. Un.er room temperature, dimen.ion.l variation.of welded specimen. will decrease gradually an. fin.lly ten.s to be stable durin. 200h after weldin.. The relative elon.ation.of welded specimen.is 3.0×10-5; After thermal cycles, distortion.of welded specimen.is much larger than.that at room temperature. After 11 thermal cycles, the dimen.ion.will ten. to be stable. Dimen.ion.l un.table distortion.of weldmen.s main.y results from temperature con.ition. microstructure variation.an. relax.tion.of weldin. residual stress.

关键词： LD31 alumin.m alloy light in.erferen.e room temperature an. thermal cycles dimen.ion.l in.tability

Achievin. Reliable CoSb_(3) based thermoelectric join.s with low con.act resistivity usin. a high-en.ropy alloy diffusion.barrier layer

在线全文

学校读者我要写书评

暂无评论

Journ.l of Materiomics 2022年第4期8卷 882-892页

作者： Z.sun x.Chen.Jun.hen. Zhan. Huiyuan.Gen. L.x.Zhan. State Key Laboratory of Advan.ed Weldin. an. Join.n. Harbin Institute of TechnologyHarbin150001China

Skutterudite(SKD)thermoelectric materials have high con.ersion.efficien.y,great mechan.cal proper-ties,an. econ.mical practicability in.the medium temperature ran.e(500e550C).They n.ed to bejoin.d with metal electrodes to form a thermoelectric power gen.ration.device durin. ***,high con.act resistivity,severe elemen. diffusion.an. large coefficien. of thermal ex.an.ion.ismatch are main.obstacles for their *** address these issues,a FeCon.CrMo high-en.ropyalloy diffusion.barrier layer was design.d an. prepared usin. an.arc smeltin. method in.this *** heatin. temperatures on.the microstructure an. properties of the bon.ed join.s were *** max.mum shear stren.th was 21.6 Mpa an. the correspon.in. reaction.layer thickn.ss,con.actresistivity were 3.77 mm,1.8 mUcm2 respectively at 600C,40 MPa,10 *** stren.th dropped down.o 18.8 MPa an. the con.act resistivity in.reased to 4.2 mU cm2 after agin. for 640 *** modelwas established an. it predicted that the con.act resistivity would keep lower than.6.5 mU cm2(300 h,100 days)an. 11 mU cm2(8760 h,1 year)an. the reaction.layer thickn.ss would n.t ex.eed 25 mm(2400 h,100 days)an. 45 mm(8760 h,1 year).

关键词： High-en.ropy diffusion.barrier layer Skutterudite Diffusion.bon.in. Microstructure Shear stren.th Con.act resistivity

Eutectic-reaction.brazin. of Al_(0.3)CoCrFen. high-en.ropy alloys usin. n./n./n. in.erlayers

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journ.l of Materials Scien.e & Techn.logy 2022年第26期121卷 245-255页

作者： Y.Lei J.sun x.G.Son. M.x.Yan. T.L.Yan. J.Yin State Key Laboratory of Advan.ed Weldin. an. Join.n. Harbin Institute of TechnologyHarbin 150001China Beijin. Power Machin.ry In.titute Beijing 100074China Sichuan.Aerospace Chan.zhen. Equipmen. Man.facturin. Co. Ltd.Chengdu 610100China

In.this study,a n.vel eutectic-reaction.brazin. of Al_(0.3)CoCrFen. high-en.ropy alloys(HEAs)^(1)was in.estigated with a design.of lamin.ted n./n./n. *** typical Al_(0.3)CoCrFen. brazin. seam con.isted of proeutecticγ,the lamellar eutectic structure composed of face-cen.ered cubic(FCC)phase(eutecticγ)an. C14 Laves,as well as a few amoun.s of n. based solid solution.A high den.ity of n.n.scale ordered L1_(2)(γ)phase was precipitated within.phase *** the brazin. temperature raised from 1200 to 1320℃,the dissolution.volume of Al_(0.3)CoCrFen. alloy in.o n.-n. liquid was *** microstructure of the brazin. seam chan.ed from hypereutectic(blocky Laves+γphase)to eutectic(Laves+eutecticγ)to hypoeutectic structures(proeutecticγ+Laves/γeutectic structure).The shear stren.th of join.s was in.reased gradually due to the formation.of eutectic lamellae an. the cellular growth of proeutecticγ*** max.mum shear stren.th of the join. brazed at 1320℃for 10 min.was up to 592 MPa,reachin. 95%of the base *** join. main.y ruptured in.the soft proeutecticγphase in.a ductile fracture mode.

关键词： High-en.ropy alloys Brazin. Eutectic structure Shear stren.th

Pan.TRK positive uterin. sarcoma in.immun.histochemistry without n.urotrophic tyrosin. receptor kin.se gen. fusion.:A case report

在线全文

学校读者我要写书评

暂无评论

World Journ.l of Clin.cal Cases 2025年第2期13卷 39-49页

作者： Seun.mee Lee Yu-Ra Jeon.Chan.min.Shin.sun-Youn. Kwon.Sojin.Shin Departmen. of Obstetrics an. Gyn.cology Keimyung University School of MedicineDaegu 42601South Korea Departmen. of Pathology an. In.titute for Can.er Research Keimyung University School of MedicineDaegu 42601South Korea

BACKGROUn. The classification.of uterin. sarcomas is based on.distin.tive morphological an. immun.phen.typic characteristics,in.reasin.ly supported by molecular gen.tic *** on.n.urotrophic tyrosin. receptor kin.se(n.RK)gen. fusion.ositive uterin. sarcoma,poten.ially aggressive an. morphologically similar to fibrosarcoma,are limited due to its recen. ***-TRK immun.histochemistry(IHC)an.lysis serves as an.effective screen.n. tool with high sen.itivity an. specificity for n.RK-fusion.*** SUMMARY We report a case of a malign.n. mesen.hymal tumor origin.tin. from the uterin. cervix.which was pan.TRK IHC-positive but lacked n.RK gen. fusion.,accompan.ed by a brief literature review.A 55-year-old woman.presen.ed to the emergen.y departmen. with abdomin.l pain.an. disten.ion.ex.ibitin. sign.fican. ascites an. multiple solid pelvic *** ex.min.tion.revealed a tumor en.ompassin. the uterin. cervix.ex.en.in. to the vagin. an. uterin. corpus.A pun.h biopsy of the cervix.in.icated n.RK sarcoma with positive immun.chemical pan.TRK ***,subsequen. n.x. gen.ration.sequen.in. revealed n. n.RK gen. fusion.leadin. to a diagn.sis of poorly differen.iated,advan.ed-stage *** The clin.cal sign.fican.e of n.RK gen. fusion.lies in.poten.ial treatmen. with TRK in.ibitors for positive *** such rare tumors is crucial due to the poten.ial applicability of tropomyosin.receptor kin.se in.ibitor treatmen..

关键词： Uterin. sarcoma Cervical sarcoma n.urotrophic tyrosin. receptor kin.se gen. fusion n.x. gen.ration.sequen.in. Case report

Magn.tude an. un.formity improvemen. of the received optical power for an.in.oor VLC system join.ly assisted by an.le-diversity tran.ceivers an. STAR-IRS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optoelectron.cs Letters 2025年

作者： YAn. Tin. WAn. Pin. HE Huimen. x.On. Yin.fei sun Yan.he LIU Qi School of Telecommun.cation. En.in.erin.， x.dian.Un.versity

To improve the quality of the illumin.tion.distribution. on. n.vel in.oor visible light commun.cation.(VLC) system， which is join.ly assisted by the an.le-diversity tran.ceivers an. simultan.ous tran.mission.an. reflection.in.elligen. reflectin. surface (STAR-IRS)， has been.proposed in.this work. A Harris Hawks optimizer algorithm (HHOA)-based two-stage altern.tin. iteration.algorithm (TSAIA) scheme is presen.ed to join.ly optimize the magn.tude an. un.formity of the received optical power. Besides， to demon.trate the superiority of the proposed strategy， several ben.hmark schemes are simulated an. compared. Results showed that compared to other optimization.strategies， the TSAIA scheme is more capable of balan.in. the average value an. varian.e of the received optical power when.the max.mal ratio combin.n. (MRC) strategy is adopted at the receiver. Moreover， as the n.mber of the STAR-IRS elemen.s in.reases， the optical power varian.e of the system optimized by TSAIA scheme would become smaller while the average optical power would get larger. This study will ben.fit the design.of received optical power distribution.for in.oor VLC systems.

关键词：

Characterization.of ultraviolet commun.cation.in.a mix.d aerosol en.iron.en.

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Optoelectron.cs Letters 2025年第2期 77-84页

作者： ZHAO Taifei sun Yux.n.WAn. Wux.n.ZHAn. Haijun.PAn.Feix.an. WU Hao Artificial In.elligen.e Key Laboratory of Sichuan.Provin.e Sichuan University of Science & Engineering Faculty of Automation.an. In.ormation.En.in.erin. Xi'an University of Technology

Wireless ultraviolet (UV) has stron. scatterin. characteristics an. can.commun.cate through n.n.direct *** UV sign.ls are tran.mitted in.the atmosphere,they are affected by the absorption.an. scatterin. effects of atmospheric particles an. atmospheric turbulen.e,resultin. in.atten.ation.of UV sign.l en.rgy an. reduced reliability of the commun.cation.*** paper focuses on.the chan.el model of UV n.n.direct-view sin.le scatterin. commun.cation.an. simulates an. an.lyzes the commun.cation.characteristics of UV light in.atmospheric turbulen.e an. mix.d aerosol en.iron.en. un.er horizon.al,vertical an. oblique ran.e commun.cation.*** results show that at equal relative humidity,the wireless UV n.n.directive scatterin. commun.cation.performan.e for vertical commun.cation.scen.rios is more affected by the mix.d aerosol en.iron.en. an. the commun.cation.performan.e is worse.

关键词：

同方期刊数据库