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Acta Metallurgica sinica(English Letters) 2021年第7期34卷 925-931页

作者： H.R.Lin Y.Z.Tian s.j.sun Z.f.Zhang shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China school of Materials science and Engineering University of Science and Technology of ChinaHefei 230026China Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Research Center for Metallic Wires Northeastern UniversityShenyang 110819China

Nano structured Cu-/Al-laminated composites were processed by accumulative roll-bonding(ARB)technique for four *** evolutions inside the Cu and Al layers and the interfacial reactions were revealed after annealing at different *** and recrystallization occurred in the Cu and Al layers at low annealing temperatures,and three kinds of intermetallic compounds formed near the *** mechanical properties of these composites after annealing were investigated by tensile tests,and the variation of strength-ductility synergy was comprehensively discussed by considering the roles of constituent and the intermetallic compounds.

关键词： CuAl composites Accumulative roll-bonding(ARB) Annealing Intermetallic compounds Ductility

Magnesium-based nanocomposites:A review from mechanical,creep and fatigue properties

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journal of Magnesium and Alloys 2023年第8期11卷 2655-2687页

作者： s.Abazari A.shamsipur H.R.Bakhsheshi-Rad j.W.Drelich j.Goldman s.sharif A.f.Ismail M.Razzaghi Department of Materials and Metallurgical Engineering Amirkabir University of TechnologyTehranIran Advanced Materials Research Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Department of Materials science and Engineering Michigan Technological UniversityHoughtonMI 49931USA Department of Biomedical Engineering Michigan Technological UniversityHoughtonMI 49931USA Advanced Manufacturing Research Group Faculty of Mechanical EngineeringUniversiti Teknologi MalaysiaJohor Bahru 81310JohorMalaysia Advanced Membrane Technology Research Center(AMTEC) Universiti Teknologi MalaysiaJohor Bahru 81310JohorMalaysia

The addition of nanoscale additions to magnesium(Mg)based alloys can boost mechanical characteristics without noticeably decreasing *** Mg is the lightest structural material,the Mg-based nanocomposites(NCs)with improved mechanical properties are appealing materials for lightweight structural *** contrast to conventional Mg-based composites,the incorporation of nano-sized reinforcing particles noticeably boosts the strength of Mg-based nanocomposites without significantly reducing the *** present article reviews Mg-based metal matrix nanocomposites(MMNCs)with metallic and ceramic additions,fabricated via both solid-based(sintering and powder metallurgy)and liquid-based(disintegrated melt deposition)*** also reviews strengthening models and mechanisms that have been proposed to explain the improved mechanical characteristics of Mg-based alloys and ***,synergistic strengthening mecha-nisms in Mg matrix nanocomposites and the dominant equations for quantitatively predicting mechanical properties are ***,this study offers an overview of the creep and fatigue behavior of Mg-based alloys and nanocomposites using both traditional(uniaxial)and depth-sensing indentation *** potential applications of magnesium-based alloys and nanocomposites are also surveyed.

关键词： Magnesium-based nanocomposites Nanoreinforcement strengthening mechanisms Creep properties fatigue properties

Critical Behaviour of the Ising s=1/2 and s=1 Model on(3,4,6,4)and(3,3,3,3,6)Archimedean Lattices

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Communications in Computational Physics 2011年第9期10卷 912-919页

作者： f.W.s.Lima j.Mostowicz K.Malarz Dietrich stauffer Computational Physics Lab Departamento de FisicaUniversidade Federal do Piaui64049-550 TeresinaPiauiBrazil faculty of Physics and Applied Computer science AGH University of Science and Technologyal.Mickiewicza 30PL-30059 KrakowPoland.

We investigate the critical properties of the Ising s=1/2 and s=1 model on(3,4,6,4)and(34,6)Archimedean *** system is studied through the extensive Monte Carlo *** calculate the critical temperature as well as the critical point exponentsγ/ν,β/ν,andνbasing on finite size scaling *** calculated values of the critical temperature for s=1 are kBTC/j=1.590(3),and kBTC/j=2.100(4)for(3,4,6,4)and(34,6)Archimedean lattices,*** critical exponentsβ/ν,γ/ν,and 1/ν,for s=1 areβ/ν=0.180(20),γ/ν=1.46(8),and 1/ν=0.83(5),for(3,4,6,4)and 0.103(8),1.44(8),and 0.94(5),for(34,6)Archimedean *** results differ from the Ising s=1/2 model on(3,4,6,4),(34,6)and square *** evaluated effective dimensionality of the system for s=1 are Deff=1.82(4),for(3,4,6,4),and Deff=1.64(5)for(34,6).

关键词： Monte Carlo simulation Ising model critical exponents

Effects of historically familiar and novel predator odors on the physiology of an introduced prey

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Current Zoology 2016年第1期62卷 53-59页

作者： Valentina s. A. MELLA Christine E. COOPER stephen j. j. f. DAVIEs Department of Environment and Agriculture Curtin University Perth WA 6845 Australia

Predator odors can elicit fear responses in prey and predator odor recognition is generally associated with physiological responses. Prey species are often more likely to respond to the odor of familiar ra- ther than alien predators. However, predator na＇ivety in an introduced prey species has rarely been investigated. We examined the physiological response, as shown by changes in ventilatory vari- ables, of an introduced terrestrial herbivore, the European rabbit Oryctolagus cuniculus, in Australia, to the odor of potential predators and to control odors （distilled water and horse）, to explore if res- ponses were limited to historical （cat and fox） predators, or extended to historically novel predators （snake and quoll）. All odors except distilled water elicited a response, with rabbits showing long- term higher respiratory frequencies and lower tidal volumes after introduction of the odors, indi- cating an increase in alertness. However, the intensity of the rabbits＇ reaction could not be directly linked to any pattern of response with respect to the history of predator-prey relationships. Rabbits exhibited significantly stronger reactions in response to both cat and quoll odors than they did to dis- tilled water, but responses to horse, fox, and snake odor were similar to that of water. Our results show that the introduced rabbit can respond to both historical and novel predators in Australia, and suggest that shared evolutionary history is not necessarily a prerequisite to predator odor recognition.

关键词： physiology ventilation predator odor rabbit introduced prey predator naivety.

synthesis of silver Nanoparticles from Honeybees and Its Antibacterial Potential

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sTRUCTURE, MECHANICAL PROPERTIEs AND THERMAL sTABILITY Of DIAMOND-LIKE CARBON fILMs PREPARED BY ARC ION PLATING

Open journal of Medical Microbiology（医学微生物学） 2024年第1期 77页

作者： Akamu j. Ewunkem Niore’s johnson A’lyiha f. Beard Ilunga Tshimanga Brittany justice jeffery Meixner

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Acta Metallurgica sinica(English Letters) 2005年第3期18卷 331-338页

作者： Y.s.Zou j.D.Zheng j.Gong C.sun R.f.Huang L.s.Wen DivisionofsurfaceEngineeringofMaterials InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China DivisionofsurfaceEngineeringofMaterials InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China／／ShenyangResearchCenterforInterfacialMaterialsShenyang110016China

Diamond-like Carbon (DLC) films have been prepared on si(100) substrates by arc ion plating in conjunction with pulse bias voltage under H2 atmosphere. The depo sited films have been characterized by scanning electron microscopy and atomic f orce microscopy. The results show that the surface of the film is smooth and den se without any cracks, and the surface roughness is low. The bonding characteris tic of the films has been studied by X-ray photoelectron spectroscopy (XPs) and Raman spectroscopy. It shows the sp3 bond content of the film deposited at -200V is 26.7%. The hardness and elastic modulus of the film determined by nanoindent ation technique are 30.8 and 250.1GPa, respectively. The tribological characteri stic of the films reveals that they have low friction coefficient and good wear- resistance. After deposition, the films have been annealed in the range of 350-7 00℃ for 1h in vacuum to investigate the thermal stability. Raman spectra indica te that the ID/IG ratio and G peak position have few detectable changes below 50 0℃. further increasing the annealing temperature, the hydrogen can be released, the structure rearranges, and the phase transition of sp3 configured carbon to sp2 configured carbon appears.

关键词： diamond-like carbon arc ion plating microstructure mechanical

On the formation of shear bands in a metallic glass under tailored complex stress fields

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journal of Materials science & Technology 2020年第18期52卷 112-117页

作者： s.H.Chen T.Li W.j.Chang H.D.Yang j.C.Zhang H.H.Tang s.D.feng f.f.Wu Y.C Wu school of Mechanical Engineering Hefei University of TechnologyHefei 230009China state Key Laboratory of Metastable Materials science and Technology Yanshan UniversityQinhuangdao 066004China school of Materials science and Engineering Liaoning University of TechnologyJinzhou 121001China school of Materials science and Engineering Hefei University of TechnologyHefei 230009China

The formation of shear bands in metallic glasses(MGs)was examined by tailoring localized complex stress fields(LCsfs).The findings have shown that the LCsfs in MGs can increase the localization of strained atoms and accelerate the release of accumulated deformation energy for initiating a shear band in confined and thin-layered *** findings not only add more knowledge to the formation mechanisms of shear bands in MGs,but also provide possible rationale for the discrepancies in the mechanical properties of different-sized *** compared with the bulk samples,the higher strength and larger elastic limits in nanoscaled MGs could be attributed to the elimination of stress-concentrators,which can serve as LCsfs.

关键词： Localized complex stress field shear band Metallic glass Molecular dynamics simulation size effect

A new four-dimensional hyperjerk system with stable equilibrium point, circuit implementation, and its synchronization by using an adaptive integrator backstepping control

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Chinese Physics B 2018年第10期27卷 231-239页

作者： j P singh V T Pham T Hayat s jafari f E Alsaadi B K Roy Department of Electrical Engineering National Institute of Technology Silchar 788010 India school of Electronics and Telecommunications Hanoi University of Science and Technology 01 Dai Co Viet Hanoi Viet Nam Department of Mathematics Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia Department of Mathematics Quaid-I-Azam University Islamabad 44000 Pakistan Ambikar University of Technology Tehran 15875-4413Iran Department of Information Technology Faculty of Computing and IT King Abdulaziz University Jeddah Saudi Arabia

This paper reports a new simple four-dimensional（4 D） hyperjerk chaotic system. The proposed system has only one stable equilibrium point. Hence, its strange attractor belongs to the category of hidden attractors. The proposed system exhibits various dynamical behaviors including chaotic, periodic, stable nature, and coexistence of various attractors. Numerous theoretical and numerical methods are used for the analyses of this system. The chaotic behavior of the new system is validated using circuit implementation. further, the synchronization of the proposed systems is shown by designing an adaptive integrator backstepping controller. Numerical simulation validates the synchronization strategy.

关键词： new hyperjerk chaotic system stable equilibrium hidden attractors adaptive backstepping control synchronization

fatigue behavior of CoCrfeMnNi high-entropy alloy under fully reversed cyclic deformation

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journal of Materials science & Technology 2019年第3期35卷 334-340页

作者： Y.Z.Tian s.j.sun H.R.Lin Z.f.Zhang Materials fatigue and fracture Division Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences school of Materials science and Engineering University of Science and Technology of China

Bulk ultrafine-grained(UfG) CoCrfeMnNi high-entropy alloy(HEA) with fully recrystallized microstructure was processed by cold rolling and annealing treatment. The high-cycle fatigue behaviors of the UfG HEA and a coarse-grained(CG) counterpart were investigated under fully reversed cyclic *** fatigue strength of the UfG HEA can be significantly enhanced by refining the grain size. However,no grain coarsening was observed in the UfG HEA during fatigue tests. Mechanisms for the superior mechanical properties of the UfG HEA were explored.

关键词： High-entropy alloy(HEA) Ultrafine-grain(UfG) High-cycle fatigue Recrystallization Grain size fatigue strength

EffECTs Of La ON sTRUCTURE AND PROPERTIEs Of HEAVY RAIL sTEEL

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Acta Metallurgica sinica(English Letters) 2005年第6期18卷 701-706页

作者： C.j. Liu M.f. jiang Y.s. Wang j.j. Chen C.L. Li Northeastern University Shenyang 110004 China Baotou Iron and steel Group Gorporation Baotou 014010 Ghina

The mechanisms of La in heavy rail steel were studied by means of experimental measurements, microstructure observation and theoretical analysis in the present work. for heavy rail steel, the state and the content of La were measured, and the mechanisms and the effects of La on sulfide inclusions, microstracture and properties of steel were determined. strip-like sulfides disappear in heavy rail steel with La/（O＋s）〉3.50, which is shown that the metallurgical function of modifying sulfide inclusions has been achieved by La. La can fine the grain size of the austenite in heavy rail steel. Under the experimental condition, the plasticity and the impacting toughness of heavy rail steel with 0.005wt% La can evidently be improved.

关键词： rare earth heavy rail steel microscopic structure sulfide inclusion,property