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中国有色金属学会会刊：英文版 2007年第1期17卷 143-147页

作者：吴艳赵骧何长树赵志朋左良 C. ESLING key laboratory for anisotropy and texture of materials(ministry of education) Northeastern University LETAM CNRS-UMR 7078University of MetzIle du Saulcy

The effects of an external DC(direct current)electric field on recrystallization texture evolution in the cold-rolled aluminum sheets with 99.99%purity were investigated by means of X-ray diffraction *** cold-rolled high-purity aluminum sheets were annealed for 60 min at 200,300 and 400℃,respectively with and without an external DC electric field of 800 V/*** results show that with DC electric field,the recrystallization cube texture is strengthened at the stage of grain growth. Possible reason for the strengthening of the recrystallization cube texture with the applied electric field may be attributed to both selected nucleation and selected growth of cube oriented crystal nuclei.

关键词：重结晶作用冷轧工艺铝形核

texture Evolution, Formability and Ridging Resistance of a Sn-bearing Ferritic Stainless Steel Under Different Hot Band Annealing Temperatures

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Acta Metallurgica Sinica(English Letters) 2019年第11期32卷 1362-1372页

作者： Tong He-Dan Guo Yang Bai Tong He Dan Guo Xiu-Ting Liu Fang-Yuan Shao Yan-Dong Liu key laboratory for anisotropy and texture of materials of ministry of education Northeastern UniversityShenyang 110819China Research Academy Northeastern UniversityShenyang 110819China

The microstructure, texture evolution and spatial orientation distribution during cold rolling and the subsequent annealing as well as formability and ridging of a Sn-bearing ferritic stainless steel under different hot band annealing temperatures were investigated. The four hot bands with annealing temperatures of 900, 950, 1000 and 1050 °C were all cold-rolled to 80% reductions and then were annealed at the same temperature of 900 °C. The results show that optimizing hot band annealing process is benefi cial to reduce the amount of {001} grains and weaken the texture intensity, and thus, to reduce ridging and improve formability. In the present study, the fi nal sheets with hot band annealing temperature of 900 °C possess small and inhomogeneous grains with a large amount of {001} orientations, which deteriorates the formability and increases the ridging. In comparison, the fi nal sheets with hot band annealing temperature of 950 °C are comprised of uniform and equiaxed //ND(ND: normal direction) recrystallized grains with a high texture intensity favorable for the improvement in r value and surface quality. However, when hot band annealing temperature further increases to 1000 and 1050 °C, it shows a sharp decrease in r value and a remarkable increase in ridging as a result of a reduction in γ-fi ber texture intensity and an increase in grain size in the fi nal sheets. Suitable controlling and optimizing hot band annealing process is essential to improve the formability and reduce the ridging.

关键词： Ferritic stainless steel texture Formability Ridging

Effect of laser incident energy on microstructures and mechanical properties of 12CrNi2Y alloy steel by direct laser deposition

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Journal of materials Science & Technology 2019年第2期35卷 395-402页

作者： Tingting Guan Suiyuan Chen Xueting Chen Jing Liang Changsheng Liu Mei Wang key laboratory for anisotropy and texture of materials (ministry of education) School of Materials Science and Engineering Northeastern University Shenyang Dalu Laser Technology Co. Ltd.

This work aims to establish the effect of laser energy area density(EAD) as the laser incident energy on density, microstructures and mechanical properties of direct laser deposition(DLD) 12CrNi2 Y alloy *** results show that the density of DLD 12CrNi2 Y alloy steel increases at initial stage and then decreases with an increase of EAD, the highest density of alloy steel sample is 98.95%. The microstructures of DLD12CrNi2 Y alloy steel samples are composed of bainite, ferrite and carbide. With increase of EAD, the microstructures transform from polygonal ferrite(PF) to granular bainite(GB). The martensite-austenite constituent(M-A) in GB transforms from flake-like paralleling to the bainite ferrite laths to granular morphology. It is also found that the average width of laths in finer GB can be refined from 532 nm to 302 nm, which improves the comprehensive properties of DLD 12 CrNi2 Y alloy steel such as high hardness of 342 ± 9 HV_(0.2), yield strength of 702 ± 16 MPa, tensile strength of 901 ± 14 MPa and large elongation of15.2%±0.6%. The DLD 12CrNi2 Y material with good strength and toughness could meet the demand of alloy steel components manufacturing.

关键词： Direct laser deposition Energy area density 12CrNi2Y alloy steel Microstructures Mechanical properties

Magnetic properties and magnetocaloric effects of manganite (La_(0.8)Ho_(0.2))_(2/3)Ca_(1/3)MnO_3 and (La_(0.5)Ho_(0.5))_(2/3)Ca_(1/3)MnO_3

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Journal of Rare Earths 2010年第S1期28卷 413-416页

作者：何宁祁阳张彩碚 Institute of materials Physics and Chemistry School of SciencesNortheastern University China Medical University key laboratory for anisotropy and texture of materials of ministry of education Northeastern University

We reported the magnetic properties and magnetocaloric effects(MCE) of(La0.8Ho0.2)2/3Ca1/3MnO3 and(La0.5Ho0.5)2/3Ca1/3MnO3 nanoparticles by sol-gel *** this method,we were able to obtain the samples with particle diameters ranging from 50 to 200 *** the(La1-xHox)2/3Ca1/3MnO3 compound,an external magnetic field induced a magnetic transition from an paramagnetic phase to a ferromagnetic phase above Ts=105-135 K,leading to magnetocaloric *** maximum value of ΔSM was 1.19 J/(kg·K) at 100 K and 2.03 J/(kg·K) at 152 K for a magnetic field change of 5 *** both samples had large relative cooling power(RCP) and wide δTFWHM,the study on systems with the(La1-xHox)2/3Ca1/3MnO3-related magnetic transitions may open an important field in searching good magnetic materials.

关键词： sol-gel magnetocaloric effects perovsvskites relative cooling power (RCP) rare earths

Effect of Cu on Martensite Transformation of CoCrMo alloy for biomedical application

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Journal of materials Science & Technology 2020年第17期52卷 127-135页

作者： Ruoxian Wang Gaowu Qin Erlin Zhang School of materials Science and Engineering Key Lab.for Anisotropy and Texture of MaterialsEducation Ministry of ChinaNortheastern UniversityShenyang110819China

The martensite transformation of Co-29Cr-6Mo-xCu(Co-xCu,x=0,1.5,2,4,wt%)alloys was investigated in order to explore ductile Co-based alloy without Ni for biomedical *** effect of Cu on martensite transformation of Co-29 Cr-6 Mo alloy was investigated using scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-Ray diffraction(XRD)and electron backscatter diffraction(EBSD)*** results revealed that the fraction ofγ-phase was increasing with increasing of copper *** detail,the fraction ofγ-phase of aged Co-1.5 Cu alloy was 4.72%and noγ-phase was found in aged Co-0Cu ***,the fraction ofγ-phase of aged Co-2Cu alloy and Co-4Cu alloy was 51.68%and 46.17%,*** demonstrated that the minimum Cu content which could inhibit martensite transformation in this alloy system was 2 wt%.Calculated phase diagram revealed that increasing the copper content of this alloy system could enlargeγ-phase zone,which means Cu could inhibit the formation ofγ-phase and consequently stabilizeγ-*** distributed Cu-rich phase was identified in aged Co-4Cu *** possible reason for the inhibition of martensite transformation by Cu addition is that alloying with Cu atom might decrease charge accumulations and increase atomic bonds,which increase the stacking fault energy ultimately.

关键词： Biomaterials Co-based alloy Cu addition Precipitation Martensite transformation

Structure properties and sintering densification of Gd_2Zr_2O_7 nanoparticles prepared via different acid combustion methods

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Journal of Rare Earths 2015年第2期33卷 195-201页

作者：马雷马伟民孙旭东刘佳男纪连永宋晗 key laboratory for anisotropy and texture of materials (ministry of education) Northeastern University key laboratory for Advanced Ceramics and Application of Shenyang School of Material Science and Engineering Shenyang University of Chemical Technology

Gadolinium zirconate（Gd2Zr2O7） nanocrystals were prepared via two different combustion methods： citric acid combustion（CAC） and stearic acid combustion（SAC）. The effects of the different preparation methods on the phase composition, microtopography, and sintering densification of the resulting Gd2Zr2O7 nanopowders were investigated by thermal-gravimetric and differential thermal analysis（TG-DTA）, Fourier transform infrared spectroscopy（FTIR）, X-ray diffraction（XRD）, and transmission electron microscopy（TEM） techniques. The results indicated that both methods could produce Gd2Zr2O7 nanopowders with an excellent defective fluorite structure. The reaction time was reduced by the SAC method, compared with the CAC method. The nanopowders synthesized by the two methods were different in grain size distribution. The resulting nanoparticle diameter was about 50 nm for CAC and 10 nm for SAC. After vacuum sintering, the sintered bodies also had a different relative density of about 93% and 98%, respectively. Thus the preparation of Gd2Zr2O7 nanopowders by SAC was the first choice to achieve the desired sintering densification.

关键词： Gd2Zr2O7 nanocrystals citric acid combustion (CAC) stearic acid combustion (SAC) combustion method X-ray diffraction techniques sintering densification rare earths

Giant and controllable Goos—Hänchen shift of a reflective beam off a hyperbolic metasurface of polar crystals

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Chinese Physics B 2024年第1期33卷 428-435页

作者：薛天李宇博宋浩元王相光张强付淑芳周胜王选章 key laboratory for Photonic and Electronic Bandgap materials Ministry of Educationand School of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China Department of Basic Courses Guangzhou Maritime UniversityGuangzhou 510725China

We conduct a theoretical analysis of the massive and tunable Goos–Hänchen(GH) shift on a polar crystal covered with periodical black phosphorus(BP)-patches in the THz range. The surface plasmon phonon polaritons(SPPPs), which are coupled by the surface phonon polaritons(SPh Ps) and surface plasmon polaritons(SPPs), can greatly increase GH *** on the in-plane anisotropy of BP, two typical metasurface models are designed and investigated. An enormous GH shift of about-7565.58 λ_(0) is achieved by adjusting the physical parameters of the BP-patches. In the designed metasurface structure, the maximum sensitivity accompanying large GH shifts can reach about 6.43 × 10^(8) λ_(0)/RIU, which is extremely sensitive to the size, carrier density, and layer number of BP. Compared with a traditional surface plasmon resonance sensor, the sensitivity is increased by at least two orders of magnitude. We believe that investigating metasurface-based SPPPs sensors could lead to high-sensitivity biochemical detection applications.

关键词： Goos–H?nchen shift black phosphorus surface plasmon phonon polaritons sensitivity metasurfaces

Recovery of Mn^(2+), Co^(2+) and Ni^(2+) from manganese nodules by redox leaching and solvent extraction

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中国有色金属学会会刊：英文版 2007年第5期17卷 1105-1111页

作者：申勇峰薛文颖李薇李禅德刘相华 key laboratory for anisotropy and texture of materials (ministry of education) Northeastern University State key laboratory of Rolling and Automation Northeastern University School of materials and Metallurgy Northeastern University inchuan Nonferrous Metals Complex

The recovery of Mn, Co and Ni from deep-sea manganese nodules was conducted by acid oxidative leaching and solvent extraction. The results indicate that pyrrhotite used during leaching can effectively facilitate the leaching out of manganese, cobalt and nickel. The leaching behaviors of Mn, Ni and Co were determined and the influences of temperature, leaching time and sulphuric acid concentration on leaching rate were also investigated. Co and Ni are precipitated from the leaching liquor by adding sodium sulfide into solution with agitation for 2 h at 50 ℃, and the manganese sulphate is obtained by concentrating the resulting solution. By re-dissolving the precipitates of cobalt and nickel, the separation of cobalt and nickel is performed using di(2-ethylhexyl) phosphoric acid (D2EHPA) for impurities elimination with 8 stages at organic-to-aqueous(O/A) volume ratio of 3:5, and 2- ethylhexyl phosphonic acid mono-2-ethylhexyl ester (known as PC88A or P507) for cobalt extraction with 3 stages counter-current operations at O/A volume ratio of 2:3 followed by their scrubbings and strippings, respectively. The final maximum recovery rates for manganese, cobalt and nickel are 85%, 75% and 78%, respectively.

关键词：细胞结核磁黄铁矿镍锰

Mixture of Oxides with Different Valence States in Nanotubes

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Journal of materials Science & Technology 2016年第2期32卷 142-146页

作者： Xiaoli Zhao Meilin Dai Shujun Li Yulin Hao Rui Yang Lei Wang Yandong Liu key laboratory for anisotropy and texture of materials (ministry of education) School of Materials and Metallurgy Northeastern University Shenyang National laboratory for materials Science Institute of Metal Research Chinese Academy of Sciences

Oxide nanotubes with different diameters and lengths were fabricated on the biomedical Ti2448 alloy by anodic oxidation in neutral electrolyte. Similar to oxide nanotubes fabricated on pure titanium and its alloys, the as-grown nanotubes on Ti2448 also exhibit gradually changing chemical distribution along the direction of tube growth. Furthermore, several kinds of oxides with different valence states （MxOy） are formed simultaneously for each alloying element M, while their volume fractions vary gradually along the tube-growth direction. The findings of this study would provide insight into the effect of valence states on the desired nanotube properties and help develop ways to enhance the properties of the preferred oxide.

关键词： Biomedical titanium alloy Oxide nanotube Anodic oxidation Chemical distribution

Variation of the uniaxial tensile behavior of ultrafine-grained pure aluminum after cyclic pre-deformation

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International Journal of Minerals,Metallurgy and materials 2018年第6期25卷 663-671页

作者： Ying Yan Li-jia Chen Guo-qiang Zhang Dong Han Xiao-wu Li Department of materials Physics and Chemistry School of Materials Science and Engineering and Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education Northeastern University School of materials Science and Engineering Shenyang University of Technology

To explore the influence of cyclic pre-deformation on the mechanical behavior of ultrafine-grained（UFG）materials with a high stacking fault energy（SFE）,UFG Al processed by equal-channel angular pressing（ECAP）was selected as a target material and its tensile behavior at different pre-cyclic levels D（D=N_i/N_f,where N_i and N_f are the applied cycles and fatigue life at a constant stress amplitude of 50 MPa,respectively）along with the corresponding microstructures and deformation features were systematically *** cyclic pre-deformation treatment on the ECAPed UFG Al led to a decrease in flow stress,and a stress quasi-plateau stage was observed after yielding for all of the different-state UFG Al *** yield strengths_（YS）,ultimate tensile strengths_（UTS）,and uniform straineexhibited a strong dependence on D when D≤20%;however,when D was in the range from 20%to 50%,no obvious change in mechanical properties was *** micro-mechanism for the effect of cyclic pre-deformation on the tensile properties of the ECAPed UFG Al was revealed and compared with that of ECAPed UFG Cu through the observations of deformation features and microstructures.

关键词： ultrafine-grained aluminum cyclic pre-deformation tensile property microstructure deformation mechanism