Materials Literature
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The flow and solidification status of molten steel with coupling flow field and temperature field in inner- outer couple cooling mold has been simulated by using CFD commercial code Flow-3 d software to get distributing diagrams of flow field and temperature, and free-surface level and shape diagram. The influence of…
The mathematical modeling of finished Φ12. 5 mm rod temperature at water cooling zone and blast cooling zone of 62.7 m controlled cooling line for rod 82B (0. 80 -0. 82C, 0. 6 -0. 9Mn, 0. 016V) has been studied by using commercial FEM software Marc. The comparison between model calculated results and measured results…
The single pass reduction deformation experiments of a Ti-IF steel (0. 009C, 0. 047Ti) at 750 ~ 850 °C with strain rate of deformation 1 -70 s-1have been carried out by THERMECMASTOR-Z thermal simulation machine. Based on obtained stress - strain curves with different temperature and strain rate of deformation, it sho…
The effect of C content(8.39%~14.20%)and TiO₂(0.35%) on fluidity of mold flux-21.98~ 27.93 CaO,32.03～43.20 SiO₂,4.58~5.83 Al₂O₃ at 1120～1200℃has been studied.The results showed that residual carbon in flux and TiO₂ in flux which was produced by Ti oxidation in Ti bearing steel led to worse fluidity of mold flux
The characteristics of 9 kinds of flat air-water nozzles for 4 strand 360 mm×450 mm billet concaster at Panzhihua Steel have been tested by using test device for measuring cold perormance of nozzles for secondary cooling. The test results showed that with nozzles level h was 115 mm and 140 mm and with jetting angle 11…
The 8- stand floating mandrel continuous rolling process of Φ169 mm x6 mm T91 steel seamless tube has been simulated and analyzed by 3- dimensional thermo-mechanical coupled FEM to get distribution of equivalent stress of across section at exit of each pass, as well as change characteristics of rolling force, mandrel…
According to 1:2 ratio,the flow rate in 640 mm×90 mm water model mold with nozzle submerged depth 130~170 mm and outflow inclination of nozzle -30°~10°was tested by Laser Doppler Velocimetry(LDV), and its numerical simulation was carried out by FLUENT software. The results showed that increasing nozzle sub- merged dep…
The behaviour of the anisotropic electrical conductivity of liquid crystal–gold nanoparticle (LC‐GNP) composites consisting of a commercially available room temperature nematic compound doped with alkylthiol‐capped GNPs has been investigated. The nematic–isotropic transition of the composite decreases nearly linearly…
Abstract In the present research, we report for the first time the X‐ray fiber pattern and polarized IR/Raman spectra taken for the uniaxially oriented disorder α form of PLLA, which can confirm the existence of the disorder PLLA α form (α′‐form) and provide some new insight on the structural difference between the or…
Abstract We present new evidence that the formation of pore throats (windows) or pore interconnects in polymerised High Internal Phase Emulsions (polyHIPEs) is most likely due to a mechanical action exerted during the post‐synthesis processing of the porous polymer monolith. We would like to invite researchers interes…
A theory of three-dimensional (3D) magnonic crystal (conceived as the magnetic counterpart of the photonic crystal) is developed and applied to explain the existence of the spin-wave frequency gap, recently revealed by neutron scattering experiments, in low-doped La1−xCaxMnO3 manganites. A confrontation of the theory…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTOrdered Crystalline Alumina Molecular Sieves Synthesized via a Nanocasting RouteQian Liu, Aiqin Wang, Xiaodong Wang, and Tao ZhangView Author Information State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023…
Overexpression of RhoA in cancer indicates a poor prognosis, because of increased tumor cell proliferation and invasion and tumor angiogenesis. We showed previously that anti-RhoA small interfering RNA (siRNA) inhibited aggressive breast cancer more effectively than conventional blockers of Rho-mediated signaling path…
A series of ferroelectric switching measurements are performed on the 75/25mol% vinylidene fluoride/trifluoroethylene copolymer thin films with various structures to elucidate the factors governing the switching characteristics of such films. It is shown that the spin-coated and well-annealed samples exhibit a remanen…
We investigate theoretically and experimentally transmission color filters using silicon subwavelength gratings on quartz substrates. Each grating area is 120 mum-square, which is suitable pixel size for displays and multichannel detectors. In the fabrication, electron beam lithography and fast atom beam etching are u…
Silk fibroin scaffolds were studied as a new biomaterial option for tissue-engineered cartilage-like tissue. Human bone marrow-derived mesenchymal stem cells (MSCs) were seeded on silk, collagen, and crosslinked collagen scaffolds and cultured for 21 days in serum-free chondrogenic medium. Cells proliferated more rapi…
By tuning the processing variables and solution properties using four different solvents (dimethylformamide, o -dichlorobeneze, tetrahydrofuran, and chloroform), polystyrene (PS) fibers were prepared by the electrospinning process to study the effects of these governing parameters on the morphological changes of the c…
It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrangement of its electronic spectrum: metallic waveguides with a high density of states near the Fermi level are formed along the vacancy lines. In the direction perpendicular to these lines, the spectrum exhibits…
Metallic mirrors will be used in ITER for optical diagnostics working in different spectral ranges. Their optical properties will change with time due to erosion, deposition, and particle implantation. First tests of molybdenum mirrors were performed in the DIII-D divertor under deposition-dominated conditions. Two se…
Angiogenesis, the sprouting of new blood vessels from existing vasculature, is a complex biological process of interest to both the treatment of numerous pathologies and the creation of thick engineered tissues. In the context of tissue engineering, one potential solution to the diffusion limitation is to create a vas…