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| 1 | Crystal orientation dependence of Young's modulus in Ti-Nb-based β-titanium alloy显示文摘The paper investigated the texture evolution of a biomedical β-titanium alloy (Ti-28Nb-13Zr-2Fe) under 15%-85% cold rolling reduction and 700°C-900°C recrystallization annealing treatment,and clarified the effects of crystal orientation on Young's modulus of the alloy.Orientation distribution function (ODF) maps and electron backscatter diffraction (EBSD) analysis revealed that the rolling texture type changed with the increase of reduction according to the sequence:α-fiber texture→γ-fiber texture→α-rotated cubic texture.Young's modulus exhibited the lowest value 54 GPa under 15% reduction.Strong {111}<112> γ-fiber texture was developed after rolling 85% reduction and annealing at 700°C,which was favorable to decreasing Young's modulus in comparison with randomly orientated microstructure.Cyclic loading-unloading tensile test proved that the gradual rotation of {110} slip plane during plastic deformation promoted the development of {001}<110> texture component,leading to the marked decrease of Young's modulus. | CUI WenFang1,GUO AiHong2,ZHOU Lian3 & LIU ChunMing1 1 Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education),Northeastern University,Shenyang 110004,China 2 Luoyang Ship Material Research Institute,Luoyang 471039,China 3 Northwest Institute of Nonferrous Metals Research,Xi’an 710016,China | 2010 | Science China(Technological Sciences)2010，53，6： | 6 |
| 2 | Confidential clinician-reported surveillance of adverse events among medical inpatients 显示文摘 | Weingart SN Ship AN Aronson MD | 2000 | J Gen Intern Med2000，15，7： | 1 |
| 3 | Experimental researches on underwater target scattering properties in non-incident direction显示文摘In the bistatic case, theoretical analysis and experimental researches on underwater acoustic scattering properties of some submarine model are made in this paper. When sourcet target and receiver have complicated triangular configuration, the relationships among target strength, incidence angle and bistatic angle are obtained. The validity of this theory is verified by theoretical calculations and tank experiments. The research results can be directly used in bistatic or multistatic underwater acoustic detection systems. | ZHAO Junwei DING Wei YAN Yisheng and WANG Zhao (Northwestern Polytechnlcal University Xi’an 710072)ZHAO Richang WANG Rongqing and WANG Zhicheng (760th Institute, General Shipping Company Dalian 116013)Received | 1997 | Chinese Journal of Acoustics1997，16，2： | 1 |
| 4 | THE COMBINED EFFECTS OF GYROTROPY AND CHIRALITY IN CIRCULAR FARADAY CHIROWAVEGUIDES显示文摘Based on the method of separating variables and the technique of Muller’s calculating roots, the propagation characteristics of hybrid modes in homogeneous and inhomogeneous circular Faraday chirowaveguides are examined in detail. Numerical results are presented to demonstrate the combined effects of different constitutive parameters on the mode bifurcation, symmetry and nonreciprocity, backward-wave and attenuation of hybrid modes, which are different from the cases of ordinary gyrotropic and reciprocal chiral waveguides. | Yin Wenyan (Northwestern Polytechnical University, Xi’an 710072)Feng Maoyan(Nanjing Shipping Institute, Nanjing 210011) | 1997 | Journal of Electronics(China)1997，14，3： | 0 |
| 5 | SURFACE STATE AND CATALYTIC ACTIVITY OF ACTIVATED AMORPHOUS Fe_(80)Zr_(12)B_8 ALLOY显示文摘The depth profile of composition,chemical state of elements and morphology of as-received and activated amorphous Fe80Zr12B8 alloy ribbons have been studied by meansof Auger electron spectroscopy,X-ray photoelectron spectroscopy and scanning Augermicroprobe combined with Ar ion bombardment.Both dull and free sides of the as-received ribbons were covered with an iron oxide layer.While a pronounced surfacesegregation and oxidation of B and precipitation of microcrystalline α-Fe particleswere observed on both sides of activated ribbons,B and Zr were oxidized selectivelyin subsurface layer.On both sides of ribbons,a porous surface structure formed. TheBET surface area was measured to be increasing from 0.11 to 2.68 m2/g.The principalmechanism of in situ activation has been discussed. | WANG Xike SHEN Ningfu CHEN Haisong Zhengzhou Institute of Technology,Zhengzhou,ChinaZHANG Haifeng Luoyang Research Institute for Ship Materials,Luoyang,ChinaGU Haicheng Xi’an Jiaotong University,Xi’an,China Professor,Research Centre for Materials,Zhengzhou Institute of Technology,Zhengzhou 450002,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，7： | 0 |
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