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Journal of Materials Science & Technology 2021年第34期93卷 60-70页

作者： Z.H.Wang B.Niu Q.Wang c.dong J.c.Jie T.M.Wang T.G.Nieh Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education)School of Materials Science and EngineeringDalian University of TechnologyDalian116024China Department of Materials Science and Engineering The University of TennesseeKnoxville37996TennesseeUSA

The development of ultrastrong maraging stainless steels(MSSs)is always in high ***,traditional high-strength MSSs generally exhibit early plastic instability with a low uniform strain since the precipitated nanoparticles are non-coherent with the body-centered-cubic(Bcc)lath martensitic ***,we design a novel ultrahigh strength MSS(Fe-5.30 cr-13.47 Ni-3.10 Al-1.22 Mo-0.50 W-0.23 Nb-0.03 c-0.005 B,wt.%)using a cluster formula approach.A fabulous microstructure consisting of a uniform distribution of high-density coherent B2-Ni Al nanoprecipitates(3-5 nm)in Bcc martensitic matrix was successfully *** alloy has not only an exceedingly high ultimate tensile strength of 2.0 GPa,but also a decent uniform elongation of 4.2%-5.1%,which is almost triple of the value observed in existing *** present an in-depth discussion on the origins of ultrahigh strength and uniform plastic strain in the new alloy to validate our design strategy and further offer a new pathway to exploit highperformance MSSs.

关键词： Maraging stainless steel Ultrahigh strength coherent precipitation Strengthening mechanisms Uniform deformation

Stress corrosion cracking susceptibility of a high strength Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy

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Journal of Magnesium and Alloys 2014年第4期2卷 335-341页

作者： S.D.Wang D.K.Xu E.H.Han c.dong Laboratory of Materials Modification by Laser Electron and Ion BeamsSchool of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Environmental corrosion center Institute of Metal ResearchChinese Academy of Sciences62 Wencui RoadShenyang 110016China

Through performing the tensile tests with different strain rates in 3.5 wt.%Nacl solution,the stress corrosion cracking(Scc)behavior and the effect of strain rate on the Scc susceptibility of an extruded Mg-7%Gd-5%Y-1%Nd-0.5%Zr(EW75)alloy have been *** demonstrate that the alloy is susceptible to Scc when the strain rate is lower than 5×10^(−6) s^(−1).At the strain rate of 1×10^(−6) s^(−1),the Scc susceptibility index(I_(Scc))is 0.96 and the elongation-to-failure(ε_(f))is only 0.11%.Fractography indicates that the brittle quasi-cleavage feature is very obvious and become more pronounced with decreasing the strain *** analysis confirms that the cracking mode is predominantly transgranular,but the partial intergranular cracking at some localized area can also ***,it seems that the crack propagation path is unrelated to the existing phase particles.

关键词： Magnesium alloy Stress corrosion cracking Strain rate Pitting corrosion

HIGH-cURRENT PULSED ELEcTRON BEAM: RAPID SURFAcE ALLOYING AND WEAR RESISTANcE IMPROVEMENT

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 276-282页

作者： J.Xu H.W.Liu Z.R.Zhou c.dong A.M.Wu S.Z.Hao A.M.Zhang T.Xu TribologyResearchInstitute SouthwestJiaotongUniversityChengdu610031ChinaManuscriptreceived25November2002 StateKeyLab.forMaterialsModificationbyLaser IonandElectronBeamsDalianUniversityofTech-nologyDalian116024China StateKeyLaboratoryofSolidLubrication LanzhouInstituteofChemicalPhysicsTheChineseAcademyofSciencesLanzhou730000China

The present paper reports the rapid surface alloying induced by the bombardment of high-current pulsed electron beam. Two kinds of substrate materials were examined to show this effect. The first sample was a pure Al metal pre-coated with fine carbon powders prior to the bombardment, and the second alloy is the D2-crl2MolVl mould steel pre-coated with cr, Ti, and TiN powders. The surface elements diffuse about several micrometers into the substrate materials only after several bombardments. Tribological behaviors of these samples were characterized and significant improvement in wear resistance was found. Finally, a TEM analysis reveals the presence of stress waves generated by coupled thermal and stress fields, which was considered as the main cause of the enhanced properties.

关键词： high-current pulsed electron beam surface alloying tribology fretting wear

Synthesis and Fluorescence Spectrum of a Novel Pyrazoline Derivative

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复旦学报（自然科学版） 2007年第5期46卷 591-592页

作者： X.Y.Han J.F.Li P.H.Lin D.X.Li c.dong Department of Agriculture of Shanxi Province Institute of chemistry and chemical Engineering Shanxi University

1 Results 2-pyrazolines and carbaozole derivatives are well known fluorescent compounds with high quantum yields[1],and have been investigated in many other respects[2,3].In this paper,carbazole radical was introduced to pyrazoline ring on c-5,and a novel derivative,named 1-phenyl-3-biphenyl-5-(N-ethyl carbazole-3-yl)-2-pyrazoline (PBEP) (5) was synthesized: The product PBEP was characterized by IR,1H NMR,and elementary ***: 47.2%.M.P 104-106 ℃.1H NMR (cDcl3) δ/10-6: 1.5(3H,—cH3).2.4(2H,—...

关键词： synthesis fluorescence pyrazoline

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地层流体样品的原位污染监视和气油比测量

国外油田工程 2004年第10期20卷 1-4页

作者： c.dong 尚维荣胜利油田外事外经处

在油井开采早期进行地层流体取样 ,可以保证现有重要资料能及时输入油田设计决策中。特别是对于水下的井 ,保证流量事关重大 ,来自裸眼录井的地层流体样品对经营者优化上下游设施投资是有帮助的。原油因其含有大量而复杂的芳香族化合物... 详细信息

在油井开采早期进行地层流体取样 ,可以保证现有重要资料能及时输入油田设计决策中。特别是对于水下的井 ,保证流量事关重大 ,来自裸眼录井的地层流体样品对经营者优化上下游设施投资是有帮助的。原油因其含有大量而复杂的芳香族化合物而显示出不同颜色。由于合成的和油基的钻井泥浆含有简单脂肪族化合物 ,所以它们几乎不吸收波长较短色道的色彩。油基污染监视(OcM)技术就是应用光学法来监视取样过程中色彩的增强。该技术提供样品污染的实时分析 ,同时预测它达到可接受的轻度污染要花多长时间。当油层流体取代流送管中的滤液时 ,甲烷信号的光学密度 (OD)也与原油中的甲烷含量成正比增加。甲烷检测对凝析油以及颜色浅的原油是最基本的检测。对于这类流体 ,色彩增强是难以检测到的 ,然而 ,这些流体具有高含量甲烷气油比(GOR)。当这些借助甲烷的方法用于深色原油时 ,原油的色彩吸收延伸到近红外区 ,涵盖甲烷分子振动峰 ,造成甲烷的光学量级较高。如果对此未予校正 ,就会使借助甲烷的污染预测和GOR测量产生误差。本文介绍用甲烷信号的光学密度 ,在取样过程中 ,在井下测量GOR的方法。还描述从甲烷光道消除色彩效应的脱色算法。该算法是基于在近红外区色彩的吸收向长波长方向呈指数衰减。脱色后。

关键词：气油比原油地层流体 GOR 油基凝析油录井量产经营者技术

Fluorescence Properties of an Intramolecular charge Transfer compound

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Fluorescence Properties of an Intramolecular Charge Transfer...

The 12th Asian Pacific confederation of chemical Engineering congress

作者： J.F.Li P.H.Lin D.X.Li c.dong Institute of chemistry and chemical Engineering,Shanxi University,Taiyuan 030006,china

2-pyrazolines are well known fluorescent compounds with high quantum yields,and investi- gated in many *** this paper,biphenyl radical was introduced to pyrazoline ring on c3, and a 2-pyrazoline derivative,named 1,5-d... 详细信息

关键词： fluorescence pyrazoline intramolecular charge transfer

Spectrum Study on cryptophane-A and Its Dichloromethane Inclusion complex

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Spectrum Study on Cryptophane-A and Its Dichloromethane Incl...

第三十五届国际光谱会议

作者： c.H.Zhang G.M.Wen W.L.Shen Y.Liu S.M.Shuang c.dong~* The research center of Environmental Science and Engineering Shanxi University Taiyuan 030006 china

＜正＞The design of hosts capable of binding neutral substractes is of great interests in supramolecular chemistry,and,in this context,the capture of the smaller aliphatic fluorocarbons still remains a challenging problem.[1] The paper reported the UV and fluorescence spectra of a synthetic host,cryptophane-A （Fig.1）,and its inclusion complex

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composition design and preparation of Ti-cr(Fe)-V hydrogen-storage alloys with low V contents

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Composition design and preparation of Ti-Cr(Fe)-V hydrogen-s...

第九届全国氢能学术会议

作者： H.B.Wang~1,Q.Wang~1,L.Yuan~1,c.dong~1,X.Fen~2,L.X.Sun~2 ~1 Dalian University of Technology,china ~2Dalian Institute of chemical Physics,china

To develop hydrogen-storage alloys with low V contents,this work investigates the hydrogen-storage properties of(cr(Fe)Ti)V(x=2.5-60 at.%) alloys which are designed by using a cluster line approach in Ti-cr-V and Ti-Fe-V ternary *** so-called cluster line in a ternary phase diagram refers to a straight composition line linking a

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Hydrogen storage properties of quasicrystalline Ti38Zr45Ni17 and after V alloying

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Hydrogen storage properties of quasicrystalline Ti38Zr45Ni17...

第九届全国氢能学术会议

作者： L.Yuan~1,Q.Wang~1,H.B.Wang~1,c.dong~1,X.Fen~2,L.X.Sun~2 ~1 Dalian University of Technology,china ~2Dalian Institute of chemical Physics,china

The hydrogen absorption and desorption properties of quasicrystalline TiZrNi and V-alloyed ones(TiZrNi)100-x(x=5,10,30,40,60 at.%) are *** composition of the quasicrystal is designed using the cluster line approach,where two cluster lines ZrNi-Ti and TiNi-Zr intersect at the ternary quasicrystal composition TiZrNi in

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Epitaxial Growth of Bi-2201 and 2212 Thin Films by Magnetron Sputering

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电子显微学报 1997年第4期 113-114页

作者： Y.Z.Zhang\ D.G.Yang\ L.Li\ B.R.Zhao\ H.chen\ c.dong H.J.Tao\ H.T.Yang\ J.W.Li\ B.Yin\ S.L.Jia\ X.Z.Zhao (National Laboratory for superconductivity, Institute of Physics chinese Academy of Sciences, Beijing 100080, P.R.china)

ＥｐｉｔａｘｉａｌＧｒｏｗｔｈｏｆＢｉ２２０１ａｎｄ２２１２ＴｈｉｎＦｉｌｍｓｂｙＭａｇｎｅｔｒｏｎＳｐｕｔｅｒｉｎｇＹ．Ｚ．ＺｈａｎｇＤ．Ｇ．ＹａｎｇＬ．ＬｉＢ．Ｒ．ＺｈａｏＨ．ＣｈｅｎＣ．ＤｏｎｇＨ．Ｊ．Ｔａｏ... 详细信息

ＥｐｉｔａｘｉａｌＧｒｏｗｔｈｏｆＢｉ２２０１ａｎｄ２２１２ＴｈｉｎＦｉｌｍｓｂｙＭａｇｎｅｔｒｏｎＳｐｕｔｅｒｉｎｇＹ．Ｚ．ＺｈａｎｇＤ．Ｇ．ＹａｎｇＬ．ＬｉＢ．Ｒ．ＺｈａｏＨ．ＣｈｅｎＣ．ＤｏｎｇＨ．Ｊ．ＴａｏＨ．Ｔ．ＹａｎｇＪ．Ｗ．ＬｉＢ．Ｙ...

关键词： Thin Films Magnetron