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Journal of materials Science & Technology 1998年第2期14卷 179-181页

作者： Wei JIA Meikuang Tseng and Jianqiang WANG(Dept. of Material Science, Northeastern University shenyang 110006, china)Liangyue XIONG and Yelong CHU(international Ceoter for materials physics, Institute of Metal Research, chinese academy of sciences,Shenyan Dept. of Material Science Northeastern University Shenyang 110006 China international Center for materials physics Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

Rapidly solidified Al92.3Fe4.3V0.7Si1.7Mm1.0 alloy has been studied by positron lifetime spectroscopy and the variations on the intedecial defects with the annealing temperature were revealed by an analysis of the lifetime results. The intedece characteristics derived from the positron-lifetime results could be used to give a satisfactory interpretation of the dependence of mechanical properties on the annealing temperature

关键词： Fe Positron Annihilation Study on the Microstructural Stability in Rapidly Solidified Al Mm Si

Effect of cyclic recovery heat treatment on surface recrystallization of a directionally solidified superalloy

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Progress in Natural Science:materials international 2011年第6期21卷 491-495页

作者： Guang XIE~1,Jian ZHANG~(1,2),Lang-hong LOU~1 1.Superalloys Division,Institute of Metal Research,chinese academy of sciences,shenyang 110016,china 2.shenyang National Laboratory for materials Science,Institute of Metal Research, chinese academy of sciences,shenyang 110016,china [a] Superalloys Division Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China [b] shenyang National Laboratory for materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Microstructural evolution and micro-hardness of a directionally solidified Ni-base superalloy subjected to shot-peening during cyclic recovery heat treatment was *** was found thatγ' dissolved and dislocation annihilation occurred during heating, while y' re-precipitated when temperature *** to the formation of a stable dislocation network at ylf interface,full recovery and therefore complete elimination of the surface recrystallization are difficult by the present cyclic recovery heat treatment.

关键词： recrystallization superalloy dislocation recovery heat treatment

ON DISCONTINUOUS REINFORCED NiAl-BASED COMPOSITES

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Acta Metallurgica Sinica(English Letters) 1995年第Z1期8卷 589-595页

作者： CHENG Tianyi (Metal materials Section, Beijing Institute of Technology, P.O.Box 327, china,international centre for materials physics, Academia Sinica, shenyang 110015), china

Mechanically alloyed NiAl-TiB_2-Y_2O_3 composite (volume percentage of dispersoids about 15v%) was prepared by hot pressing. The compressive properties of the composite from 300 K to 1360 K were tested and the microstructures were studied mainly by TEM. The yield strengths of the composite at room temperature and high temperatures are considerably higher than that of monolithic NiAl and also is higher than similar NiAl-based composites which contained higher content of dispersoids but showed coarser microstructure. The possible strengthening mechanisms working in the composite are discussed.

关键词： NiAl composite strength

Energy Spectra of the Tunable Laser Crystal Gd3GasO12:Cr3+ and Their Pressure-Induced Shifts

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Communications in Theoretical physics 2004年第1期 141-150页

作者： MA Dong-Ping~(1,2) 1 Department of Applied physics,Sichuan University,Chengdu 610065,china 2 international centre for materials physics,Academia Sinica,shenyang 110015,china

By means of both the theory for pressure-induced shifts（PS）of energy spectra and the theory for shiftsof energy spectra due to electron-phonon interaction（EPI）,at 300K,the‘pure electronic’contributions and the contri-butions from EPI to R1line,R2line,and U band of GGG:Cr3+as well as their PS have been calculated,*** total calculated results are in good agreement with all the experimental *** physical origins have *** is found that the mixing-degree of|t（2～2）(3T1)e4T2〉and|t232E〉base-wavefunctions in the wavefunctions ofR1level of GGG:Cr3+is considerable under normal pressure,and the mixing-degree rapidly decreases with *** change of the mixing-degree with pressure plays a key role for PS of R1line or *** 300K,boththe temperature-independent contribution to R1line（or R2line or U band）from EPI and the temperature-dependentone are *** remarkable difference between pressure-dependent behaviors of PS of R1lines of GGG:Cr3+andGSGG:Cr3+results from the differences of their microscopic *** features of emission spectra of GGG:Cr3+at various pressures have satisfactorily been explained.

关键词： high-pressure effect line shift spin-orbit interaction electron-phonon interaction d-orbital coupling between t22(3T1)e4T2 and t23 2E tunable laser crystal

Intrinsic Localized Modes in an Order-parameter-preserving Antiferromagnet

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Journal of materials Science & Technology 1993年第2期9卷 148-152页

作者： Wuming LIU+ Shaoyun FU Benlian ZHOU, international centre for materials physics, Institute of Metal Research, Academia Sinica, shenyang, 110015, china

Intrinsic localized modes in an order-parameter-preserving antiferromagnet are investigated with employing the Dyson-Maleev transformation and the coherent-state ansatz. These modes which be- low the magnon frequency band correspond to a local large-angle, low-frequency precessional mo- tion of spins, quantum states of which are characterized by the indefiniteness of the number of rele- vant magnons.

关键词： intrinsic localized mode antiferromagnet magnon

Statistical theory for hydrogen bonding fluid system of A_aD_d type(Ⅲ):Equation of state and fluctuations

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Science china Chemistry 2007年第2期50卷 183-189页

作者： WANG HaiJun1,2,GU Fang1,HONG XiaoZhong3 & BA XinWu1 1 College of Chemistry and Environment Science,Hebei University,Baoding 071002,china 2 international Center for materials physics,chinese academy of sciences,shenyang 110016,china 3 College of physics Science and Technology,Hebei University,Baoding 071002,china College of Chemistry and Environment Science Hebei University Baoding China international Center for materials physics Chinese Academy of Sciences Shenyang China College of physics Science and Technology Hebei University Baoding China

The equation of the state of the hydrogen bonding fluid system of AaDd type is studied by the principle of statistical mechanics. The influences of hydrogen bonds on the equation of state of the system are obtained based on the change in volume due to hydrogen bonds. Moreover,the number density fluc-tuations of both molecules and hydrogen bonds as well as their spatial correlation property are inves-tigated. Furthermore,an equation describing relation between the number density correlation function of "molecules-hydrogen bonds" and that of molecules and hydrogen bonds is derived. As application,taking the van der Waals hydrogen bonding fluid as an example,we considered the effect of hydrogen bonds on its relevant statistical properties.

关键词： hydrogen bonding fluid equation of state fluctuation correlation effect

Statistical theory for hydrogen bonding fluid system of A_aD_d type (I): The geometrical phase transition

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Science china Chemistry 2006年第6期49卷 499-506页

作者： WANG Haijun1,2, HONG Xiaozhong3, GU Fang1 & BA Xinwu1 1. College of Chemistry and Environment Science, Hebei University, Baoding 071002, china 2. international Center for materials physics, chinese academy of sciences, shenyang 110016, china 3. College of physics Science and Technology, Hebei University, Baoding 071002, china 1. College of Chemistry and Environment Science Hebei University Baoding 071002 China 2. international Center for materials physics Chinese Academy of Sciences Shenyang 110016 China 3. College of physics Science and Technology Hebei University Baoding 071002 China

The influence of hydrogen bonds on the physical and chemical properties of hydrogen bonding fluid system of AaDd type is investigated from two viewpoints by the principle of statistical mechanics. In detail, we proposed two new ways that can be used to obtain the equilibrium size distribution of the hydrogen bonding clusters, and derived the analytical expression of a relationship between the hydrogen bonding free energy and hydrogen bonding degree. For the nonlinear hydrogen bonding systems, it is shown that the sol-gel phase transition can take place under proper conditions, which is further proven to be a kind of geometrical phase transition rather than a thermodynamic one. Moreover, several problems associated with the geometrical phase transition and liquid-solid phase transition in nonlinear hydrogen bonding systems are discussed.

关键词： hydrogen bonding fluid, equilibrium free energy, geometrical phase transition.

Structures of rare earth-transition metal rich compounds derived from CaCu5 type

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Progress in Natural Science:materials international 2002年第1期 3-11页

作者： LIANG Jingkui, CHEN Xiaolong, LIU Quanlin, and RAO Guanghui( Institute of physics and Center for Condensed Matter physics, chinese academy of sciences, Beijing 100080, Chin international Center for materials physics, chinese academy of sciences, shenyang 110015, china) Institute of physics and Center for Condensed Matter physics Chinese Academ y of Sciences，Beijing 100080，China international Center for materials Ph ysics，chinese academy of sciences，shenyang 110015，china Institute of physics and Center for Condensed Matter physics Chinese Academ y of Sciences，Beijing 100080，China

The properties of materials have a close connection to their crystal structures. Rare earth (R)-transition metal (T) rich compound are the focus of investigation in the search for new hard magnetic materials. As the basis for the study of stabilized effect of the third component on the formation of RT5 derivative and its influence of the occupied sites on magnetic properties, in this paper, the possible derivative compounds based on the RT5 primitive unit cell of the CaCu5 structure type formed through the ordered or disordered substitution of dumbbell pair 2T atoms for the R atoms at some sites, and the structural relationship between the derivatives and the prototype are summarized.

关键词： CaCu5 type structure derivative compounds crystal structure.

EAM APPROACH TO ENTHALPY OF FORMATION OF ALKALI METAL ALLOYS

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中国有色金属学会会刊：英文版 1996年第4期6卷 52-56页

作者： Zhang Bangwei Ouyang Yifang Liao Shuzhi Jin Zhanpeng1 (international centre for materials physics,shenyang 110015)2 (Department of physics,Hunan University, Changsha 410082)3 (Department of materials Science and Engineering,Central South University of Tec ACAD SINICA INT CTR MAT PHYSSHENYANG 110015PEOPLES R CHINA HUNAN UNIV DEPT PHYSCHANGSHA 410082PEOPLES R CHINA CENT S UNIV TECHNOL DEPT MAT SCI & ENGNCHANGSHA 410083PEOPLES R CHINA HUNAN UNIV DEPT CHEM & CHEM ENGNCHANGSHA 410082PEOPLES R CHINA

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关键词： EAM approach enthalpy of formation alkali metal alloys

Theoretical Prediction of Strength of Composite with Fractal-tree Structure Fibers

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Journal of materials Science & Technology 1993年第6期9卷 400-404页

作者： Shaoyun FU Wuming LIU Benlian ZHOU Chiwei LUNG international centre for materials physics,Institute of Metal Research,Academia Sinica,shenyang,110015,china

Theoretically;the strength of composite with branched fibers is predicted to be greater than that of composite with plain *** effects of the branching angle of the fiber,and the snubbing friction between the fiber and the matrix at the fiber branching point and the branching step's number of the fiber on the strength of the composite with branched fibers have been *** has been shown that the strength of the composite increases with branching angle,the snubbing friction and the branching step's number.

关键词： composite fiber fractal-tree structure