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| 1 | ZrO_2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy | L.Y. Sheng a,b, J.T. Guo c, T.F. Xi a,b, B.C. Zhang c, H.Q. Ye c a PKU-HKUST ShenZhen-Hong Kong Institution, Shenzhen 518057, China b College of Engineering, Peking University, Beijing 100871, China c Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | 2012 | Progress in Natural Science:Materials International2012，22，3： | 3 |
| 2 | Stress Field of Non-equilibrium Grain Boundaries in Nano-crystalline Metals显示文摘Introducing the stress distribution near grain boundaries to improve the dislocation pileup model for the Hall-Petch (H-P) relation, the continuous distribution of dislocations in the pileup could be solved by means of Tschebysheff polynomials for the Hubert transformation. An analytical formula of the stress intensity factor for the dislocation pileup is obtained. The reverse H-P relation may be explained by the modified dislocation-pileup-model. | Chiwei LUNG and Enke TIAN International Centre for Materials Physics, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Hengqiang YE Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sci | 2001 | Journal of Materials Science & Technology2001，17，3： | 2 |
| 3 | Zirconium-Induced Softening in Hyperstoichiometric Ni_3Al显示文摘The room temperature compressive properties and microhardness of Ni3Al alloys doped with Zr were studied. For the hypostoichiometric Ni3Al alloys, the compressive strength and microhardness increased with an increase in Zr content, while softening behavior induced by doping with a certain amount of Zr was observed in hyperstoichiometric Ni3Al alloy. Possible mechanisms for the softening effect were suggested. | Yufang LI, Jianting GUO and Hengqiang YE Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | 2005 | Journal of Materials Science & Technology2005，21，2： | 2 |
| 4 | Microstructure of the Ductile Phase in Intermetallic Compound Ni_(50)Al_(20)Fe_(30)显示文摘The microstructure of the single hot extruded and annealed Ni50Al20Fe30Y0.003 intermetallic compound alloys has been examined by means of high resolution electron microscopy (HREM). In these extruded and annealed alloys. the ductile phase is of a mixture of the disordered fcc γ matrix and or dered γ’ precipitates. This fact well interprets the reason why the degree of annealing treatment can influence the strength and ductility of these alloys. The HREM observation revealed directly that there was some strain concentration at γ’-γ interfaces, due to the presence of more iron atoms in these two phases. The fixed orientation relationship between the γ phase and γ’ precipitates was identified to be {001}γ||{00 }γ’ and <100 >γ|| < 100 > γ’ | Lianlong HE Shuhe WANG Jianting GUO and Hengqiang YE (Lab. of Atomic Imaging of Solids, Institute of Metal Research, Academia Sinica, Shenyang, 110015, China)(To whom correspondence should be addressed) | 1994 | Journal of Materials Science & Technology1994，10，5： | 0 |
| 5 | Microstructural Characteristics of La_(0.7)Ca_(0.3)MnO_3 Films and Multilayers显示文摘La0.7Ca0.3MnO3 (LCMO) films and La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 (LCMO/GCMO) multilayers have been prepared by pulsed laser deposition. The microstructures of both systems were investigated by transmission electron microscopy (TEM). The main structure of the films and the multilayers was monoclinic with a unit cell of size 2ap x-2ap. x -2ap, where ap is the lattice constant of single perovskite crystal. The LCMO films were composed of three-dimension multitwinning domains, while the LCMO/GCMO multilayers showed two-domain structure. In LCMO/GCMO multilayers, LCMO layers were coherent with GCMO layers and the interfaces between LCMO and GCMO layers were free from mismatch dislocation, which resulted in highly strained multilayerd structures. | Mingguang WANG, DouXing LI, Lianlong HE and Hengqiang YE (Laboratory of Atomic Imaging of Solid, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) Guangcheng XIONG (Department of Physics and Mesoscopic Physics National Labo | 2000 | Journal of Materials Science & Technology2000，16，6： | 0 |
| 6 | A Molecular Dynamics Study on the (1120) Domain Boundary Structures in Epitaxial Wurtzite GaN显示文摘A computer program has been developed for the moIlcular dynamics calculation of ionic orstrong-ionic covalent systems. Ewald summation algorithm and Keating potentiaI model areadopted to calculate the long-range Coulomb interaction and the short-range bonding forces,respectively. A theoretical study on the domain boundary structures in epitaxial wurtzite GaN film is accomplished with the program. The calculation result is used in the structure formationexplanation of an interesting defect observed by HREM experiment. | Shaoqing WANGt Yuanming WANG and Hengqiang YE(Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110015, China)To whom correspondence should be addressedE-mail: sqwang@imr.ac.cn | 1999 | Journal of Materials Science & Technology1999，15，4： | 0 |
| 7 | FINE STRUCTURES OF BOTH INTERFACES AND INTERFACIAL REACTION PRODUCTS显示文摘The characteristic of interface depending on the atomic structure exerts an inportant,andsometime controlling,influence on performance of the interacial materials.The present paper reviews the main studies on fine structure of both the materials inter-faces and interfacial reaction products in semiconductor uperlattice,metal multilayer ceram-ics and composite materials by mean of selected area electron doffraction patterns and highresolution electron microscopy.The following features of interfaces are reviewed:the orientation relationships;the char-acteristic of steps,facets and ronghness of interfaces;atomic bonding across the interface;thedegree of coherency,the structure of misfit dislocations and elastic relaxations at the inter-faces:the presence of defects at the onterfaces:the structure of the interfacial reaction prod-ucts as well as the reaction kinetics and reaetion mechanism. | LI Douxing PING Dehai NING Xiaoguang YE Hengqiang Laboratory of Atomic Imaging of Solids,Institute of Metal Research,Academia Sinica,Shenyang.China Professor,Institute of Metal Research,Academia Sinica,Shenyang 110015,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，1： | 0 |
| 8 | PREPARATION,PROPERTIES AND INTERFACE STRUCTURES OF Si_3N_(4w)/6061Al COMPOSITE显示文摘The Si3N4 whisker reinforced 6061Al composite with bending strength of 790 MPa wasprepared by squeeze casting process.After heat-treatment under T6 regime i.e.530℃,1 h solutioning and 160℃,24 h aging,an increment in strength and microhardnessmay be over 20% and 28% respectively,The microstructures of Si3N4 whisker andSi3N4/Al interface were observed by meas of HRTEM.The relation between interracialstructure and composite properties was discussed. | PAN Jin Changsha Institute of Technology,Changsha,ChinaNING Xiaoguang YE Hengqiang Laboratory of Atomic Imaging of Solids,Institute of Metal Research,Academia Sinica,Shenyang,China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，11： | 0 |
| 9 | STUDY OF K_2O·6TiO_2 WHISKER REINFORCED AI COMPOSITES FOR THEIR MECHANICAL PROPERTIES AND INTERFACIAL STRUCTURES显示文摘A newly developed whisker K2O 6TiO2 reinforeed 6061Al composite was prepared bysqueeze casting process.The flexural strength of the composite is 518MPa,and deereasesto 490MPa after T6 treatment.The hardness of the composite also shows the similarchange while T6 treating.The results of HRTEMobservation may explaine this property.change.It was considered that there is a continuous TiO layer at the whisker-matrix inter-face,which is easily to react with the segregated Mg and to form MgTi2O4,MgAl2O4.Thethickening of TiO layer after T6 treatment is the main reason resulting is strength degra-dation of composite. | PA N JinChangsha Institute of Technology, ChinaLI Jihong, NING Xiaoguang, YE HengqiangLab. of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences. Shenyang, China Manuscript received 28 February, 1994 | 1994 | Acta Metallurgica Sinica(English Letters)1994，7，2： | 0 |
| 10 | Evaluation of Impact of Pollen Grains from Bt,Bt/CpTITransgenic Cotton and Bt Corn Plants on the Growth andDevelopment of the Mulberry Silkworm,Bombyx moriLinnaeus (Lepidoptera:Bombycidae)显示文摘The δ-endotoxin genes of Bacillus thuringiensis (Bt) and proteinase inhibitor (PI) genes aretwo kinds of genes popularly used for developing transgenic plants resistant to insect pests. To clarify whetherthere is any risk concerning the effects of pollens from these transgenic crops on non-target insects with eco-nomic importance, such as the effects on the growth and development as well as cocoon quality of the silk-worm, Bombyx mori Linnaeus, a series of feeding experiments were conducted, using pollens from transgeniccotton or corn containing crylAc, cry1A+-CpTI or crylAb genes, compared with pollens from non-transgenicnormal cotton and corn as well as the non-pollen treatment. In contrast to the latter ones, pollens from trans-genic plants showed no significant adverse effects on larval mortality, cocoon weight, pupa weight, cocoonshell weight, pupation rate, emergence rate and fecundity of the silkworm after neonates were fed with thepollens for 72 h. In addition, no dosage effects of pollens were found. Though the duration of 1st instar larvaewas prolonged in the case of feeding with transgenic pollens as compared with those of the non-pollen treat-ment, but they were not significantly different from those fed with pollens from non-transgenic cotton or corn.Meanwhile, the body weight of the 3rd instar molters fed with transgenic pollens was obviously different fromthose for non-pollen treatment, and was all significantly heavier than that of the controls. Consequently, it isconsidered that the adverse effect of pollens from transgenic insect-resistant cotton and corn on the growth anddevelopment of the silkworm is negligible. | LI Wen-dong, YE Gong-yin, WU Kong-ming, WANG Xiao-qi and GUO Yu-yuan(Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100094 , P. R. China College ofPlant Protection, Shenyang Agricultural University, Shenyang 110161 , P.R.China Institute of AppliedEntomology, Zhejiang University , Hangzhou 310029 , P.R.China) | 2002 | Agricultural Sciences in China2002，1，12： | 0 |
| 11 | MICROSTRUCTURE OF SILICON CARBIDE WHISKERS显示文摘The morphology,crystal defects and chemical compositions of surfaces in two kinds of SiCwhiskers related to their growth mechanism have been studied by means of electronmicroscopy and surface chemical analyses.Based upon the experimental results,five criteriafor evaluating the whisker microstructure were suggested as:proportion of the perfect singlecrystals,morphology and dimensions,defects and their distribution,the bulk and surfacechemistries,and crystallographic characteristics. | XU Haigang ZHU Jing YUAN Hong Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,ChinaNING Xiaoguang YE Hengqiang Laboratory of Atomic Imaging of Solids,Institute of Metal Research,Academia Sinica,Shenyang,China | 1991 | Acta Metallurgica Sinica(English Letters)1991，4，9： | 0 |
| 12 | Contact Electrification Spectrum for Performance Enhancement Mechanism Investigation of Triboelectric Nanogenerators based on Silicone Elastomers with Different Surface Microstructures显示文摘Triboelectric nanogenerators(TENGs)based on conjunctive effects of contact electrification(CE)and electrostatic induction are emerging as a new mechanical energy harvesting and sensing technique for promising applications in smart wearables,Internet of Things(IoTs),etc.The surface microstructure of a flexible triboelectric material for the increase of surface area is a common strategy for performance enhancement of TENGs,but the real roles of surface microstructures on their output performance are still not explicit due to the lack of suitable analysis tool and rational experimental design.Taking advantages of the surface-sensitive characteristic of CE effect,this work exploited and developed the electric signal patterns generated by single impact of TENGs as a kind of CE spectrum to analyze and speculate the real roles of surface microstructures of flexible triboelectric materials on the output performance of TENGs.Firstly,four different kinds of surface microstructures,namely planar surface(PS)and three combinations of two basic surface microstructures,i.e.,micro lens arrays(MLAs),fabric textures(FTs),and hierarchical structures of MLAs on FTs(MLA/FTs),were elaborately designed and introduced for an identical triboelectric material(i.e.,silicone elastomer)by a(micro)molding synthesis route.Then they were used for assembly of TENGs based on vertical contact mode to conduct performance evaluation under the same triggering conditions.Through systematic analysis and comparison of their highly repeatable CE spectra by programmed machine,it was found that the surface microstructure for a flexible triboelectric material to maximally enhance the output performance of a TENG shall achieve a positive synergistic effect of increasing triboelectric charge density,effective contact area and contacting/separating velocity,rather than simple increase of its surface area. | Jianliang Gong Shenyang Ye Yan Luo Liqiong Xia Bingyu Liu Yiwang Chen | 2023 | Chinese Journal of Polymer Science2023，41，10： | 0 |
| 13 | Skeletal muscle cell apoptosis following motor nerve injury versus sensory nerve injury显示文摘Skeletal muscle atrophy inevitably occurs in denervated skeletal muscle,and cell apoptosis plays an important role in skeletal muscle atrophy and degeneration.The present study established rat models of simple nerve injury by transecting the ventral or dorsal spinal nerve root and observed rat skeletal muscle cell apoptosis following simple motor nerve injury versus simple sensory nerve injury.Following skeletal muscle denervation for 10 weeks,cell apoptosis was detected in skeletal muscle,which was accompanied by obvious changes in rat behavior and electrophysiological responses.In addition,changes in cross-sectional area and average gray-scale of motor endplates of the gastrocnemius muscle were analyzed following sciatic nerve injury and motor nerve injury.Cell nuclei in denervated skeletal muscle tissue were more densely arranged than in normal skeletal muscle tissue.Cell nuclei were most dense in the sciatic nerve injury group,followed by the motor nerve injury group and the sensory nerve injury group.Fas/FasL expression and the number of apoptotic cells increased in denervated skeletal muscle,and apoptosis-related changes were observed.These findings suggested that motor and sensory nerves provided trophic actions following skeletal muscle and motor nerve injury,resulting in a greater influence on skeletal muscle atrophy than sensory nerve injury.Therefore,reconstruction of motor nerves should be preferentially considered for treating denervation-induced skeletal muscle atrophy. | Zhao, Lei Xu, Ruisheng Jiang, Shenyang Lue, Guangming Yan, Zhiqiang Sun, Junming Wang, Ling Xue, Ye Jiang, Donglin | 2011 | Neural Regeneration Research2011，6，3： | 0 |
| 14 | DEFORMATION TWINNING IN BALL MILLED COPPER显示文摘DEFORMATIONTWINNINGINBALLMILLEDCOPPER￥HUANGJianyu;WUYukun;YEHengqiang(LaboratoryofAtomicImagingofSolids,InstituteofMetalResea... | HUANG Jianyu WU Yukun YE Hengqiang (Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences, Shenyang) | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，3： | 0 |
| 15 | STABILITY OF WHISKERS AND INTERFACIAL MICROSTRUCTURE IN ALUMINUM MATRIX COMPOSITES REINFORCED BY K_2O·8TiO_2 WHISKERS显示文摘STABILITYOFWHISKERSANDINTERFACIALMICROSTRUCTUREINALUMINUMMATRIXCOMPOSITESREINFORCEDBYK_2O·8TiO_2WHISKERS￥LIJihong;NINGXiaoguan... | LI Jihong NING Xiaoguang YE Hengqiang (Laboratory of Atomic Imaging of Solids,Institute of Metal Research, Chinese Academy of Sciences, Shenyang) SHEN Baoluo LI Wei TU Mingjing (Chengdu University of Science and Technology, Chengdu, China) | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，3： | 0 |
| 16 | PHASE TRANSFOR MATION INDUCED BY DEFORMATION IN TiAl(Cr)INTERMETALLICS AT ROOM TEMPERATURE显示文摘The phase transformation induced by deformation in TiAl(Cr) intermetallics at room temperature has been studied by means of TEM and HREM observations and nanoprobe analysis. The results showed that, twinning is a primary deformation mechanism at room temperature, when plastic deformation is small twinning takes place on {111} planes and when plastic deformation is great two sets twins takes place usually from intersection region, where the atomic structure changes to hexagonal structure with the composition of Ti 55.7 2Al 42.2 8Cr 1.7 . | Lianlong He, Rong Yu, Lichun Zhang *, Huayong Pan and Hengqiang Ye Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China *Department of Material Science, Science and Technology | 1999 | 中国有色金属学会会刊:英文版1999，9，S1： | 0 |
| 17 | Application of a Geometric Similar Model in Structure Crack Diagnosis显示文摘As the working condition of the large arm on the steel package rotating station is serious, it is very difficult to test on the spot. In order to simplify the study process, a geometric similar modal is designed and made. During the study, the same element partition method and boundary condition are used in both the large arm and its similar model. The result shows that the numerical solution of the large arm is verified well indirectly by validating the numerical solution of the similar model. | LI Zhen-ping, LIU Jun, YE Da-yong, Wen Bang-chun Northeastern University, Shenyang 110004, P. R. China | 2001 | International Journal of Plant Engineering and Management2001，6，2： | 0 |
| 18 | Ti_2Al PHASE IN AlRICH TiAl INTER METALLICS显示文摘Ti 48 Al 52 foils were examined by high resolution electron microscopy and electron microscopy. It was found that a Ti 2Al phase does exist in the sample tested, which is different from Ti 2AlN or Ti 2AlC phase. There is some further research to be carried out. Firstly, the precise crystal structure of Ti 2Al is to be determined, especially the atom arrangement of the (0001) plane. Secondly, the structure of interface between Ti 2Al and Ti 3Al should be obtained so as to interpret their relation when they grow from the TiAl matrix in more detail. | Rong Yu, Lianlong He, Huayong Pan and Hengqiang Ye Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China | 1999 | 中国有色金属学会会刊:英文版1999，9，S1： | 0 |
| 19 | PHASE DIAGRAM OF SYSTEM NdCl_3-LiCl-KCl显示文摘The phase diagram of system NdCl3-LiCl-KCl has been investigated by DTA.Six surfacescorresponding to the prhnary crystallization of NdCl3,LiCl,KCl,γ-KCl·NdCl3,β-3KCl·NdCl3 and 2KCl·NdCl3 respectively,eleven univariant lines related to the sec-ondary crystallization,two ternary eutectics E1(70.5wt-% NdCl3+8.0wt-% KCl,360℃)and E,(5.0wt-% NdCl3+ 53.0wt-% KCl,355℃)and one ternary peritectic P(67.0wt-% NdCl3+10.0wt-% KCl,375℃)were found.It is also chtrified that this studyon the system NdCl3- KCl differs from previous work in the two transition temperatures:e1(77.0 wt-% NdCl3,484℃),e2(40.0wt-% NdCl3,620℃),p(70.0wt-%NdCl3,610℃),3KCl·NdCl3(690℃)and two reactions:α-3KGl·NdCl3β-3KGl·NdCl3 (355℃)β-SKGl·NdCl3γ-3KCl·NdCl3 (450℃)The eutectic point e5(31.0wt-%LiCl,460C)is determined for the pseudobinary system3KCl·NdCl3—LiCl. | ZHANG Yifeng Northeast University of Technology,Shenyang,ChinaZHENG Chaogui YE Yupu Peking University,Beijing,China Department of Chemistry,Northeast University of Technology,Shenyang.China | 1989 | Acta Metallurgica Sinica(English Letters)1989，2，7： | 0 |
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