effects of grain boundaries
Effects of Metal (Ag, Sn and Zn) Nanoparticles Inserted into MgB2 Grain Boundaries on Transport and Superconducting Properties
... defect, grain boundary and impurity phase, which does not largely depend on temper- ature, and the temperature dependence of µ is mainly ascribed to phonon ...
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The Effects of Grain Boundaries on the Current Transport Properties in YBCO Coated Conductors
... imposed on the background of the grain image for sam- ples 1 and 2, respectively. The GBs were divided into the varied misorientation angles: θ < 5°, 5° < θ < 10°, and θ > 10°. In sample 1, the GBs ...
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Effects of Eutectic Compounds Formed along Grain Boundaries in Thixomolded® Alloy Mg96Zn2Y2 on Creep Deformation
... Distortion of scribe lines on the surface of a specimen during creep deformation was observed by FE-SEM, and the possibility of grain boundary sliding during the deformation was examined. The scribe lines were ...
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Pronounced impact of p-type carriers and reduction of bandgap in semiconducting ZnTe thin films by Cu doping for intermediate buffer layer in heterojunction solar cells
... agglomeration effects in un-doped ZnTe thin films, it is very difficult to measure the exact gain size of all grains; however we marked the crystals with their larger length ...agglomeration effects reduced ...
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Excitonic localization in AlN-rich AlxGa1-xN/AlyGa1-yN multi-quantum-well grain boundaries
... between grain sizes and the position of the average NBE peak ...the grain sizes contribute in modulating the NBE energy of the samples and the excitonic localization ...the boundaries of three ...
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Computational Study of Grain Boundaries and Nano-Reactive Materials
... of grain boundary migration of metallic materials using molecular dynamics simulation, grain boundary mobilities and activation energies are often found to be different from experimentally observed ...zero ...
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Special Grain Boundaries in Ultrafine Grained Tungsten
... of grain boundaries (GBs) in ultra-strength nanomaterials are of immense scientific ...interest. Grain boundaries have significant effects on the mechanical properties of a wide range ...
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Location and distribution of micro-inclusions in the EDML and NEEM ice cores using optical microscopy and in situ Raman spectroscopy
... the grain size is modulated by some impurity ...of grain boundary mobil- ity via dissolved impurities being dragged along by migrat- ing grain boundaries (Alley et ...and grain ...
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Direct observation of precipitation along twin boundaries and dissolution in a magnesium alloy annealing at high temperature
... and grain bound- aries had ...and grain boundaries became clear of second phase particles, except for particle A, which had reduced in size, ...and grain boundaries all occurred at this ...
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Near-edge X-ray absorption fine structure studies of Cr1-xMxN coatings
... 9 CrN coatings were also reported. Compressive stress of CrN coatings is increased about 52 % with the increase of Al-dopant up to ~28.5 at.%. In a similar fashion, the mechanical hardness and Young’s modulus of the CrN ...
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Corrosion Behavior of AA5038 Nanostructured Aluminum Alloy Produced by Accumulative Roll-Bonding
... Figure 2 shows TEM images, diffraction pattern and microstructure selected for ARB six-cycle specimen in room temperature. According to the TEM images, very fine grained structure in ARB six-cycle specimen has dominated. ...
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Contribution of the space charge on the grain boundary energy in yttria-stabilized zirconia
... retards grain growth in 3 mol % yttria-stabilized zirconia (3 ...of grain growth in 3 YSZ by an electric field results mainly from a reduction in the capillary driving force (namely, the grain ...
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Misorientation Change of the Grain Boundary in Pure Copper Bicrystals Subjected to One Pass Equal Channel Angular Pressing
... dislocation boundaries with low-energy dislocation config- uration, and predicted the evolution of average misorientation angles of deformation structures with increasing ...
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The Control of Oxidation Induced Intergranular Embrittlement by Grain Boundary Engineering in Rapidly Solidified Ni Fe Alloy Ribbons
... between grain boundary microstructure and oxidation-induced intergranular embrittlement has been investigated in rapidly solidified and subsequently annealed Ni–39 mass%Fe thin ribbons with different grain ...
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Influence of High Pressure Torsion Straining Conditions on Microstructure Evolution in Commercial Purity Aluminum
... between two anvils and subjected to torsional straining under a high pressure. Thus, the two parameters, i.e. a number of turns applied to the disk, N, and a magnitude of the imposed pressure, P, are important in the HPT ...
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The Decomposition Formula of 〈001〉 Symmetrical Tilt Grain Boundaries
... For instance, in Ref. 37), the maximum permissible deviation could be attained by the minimum separation of DSC dislocations which could be roughly proportional to 1 / 3 while the magnitude of the Burgers vector could ...
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Grain Boundaries and Diffusion Phenomena in Severely Deformed Materials
... substantial grain refinement, the severe plastic deformation induces a huge amount of further defects in the materials, including vacancies, interstitial atoms, dislocations, dislocation walls, pores, ...
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Effect of Element Addition and Heat Treatment Process on the Properties of High Manganese Steel
... the grain boundaries. The small particles present within the grain of this sample are expected to have a positive effect on the abrasive wear resistance, without giving too much loss in ...on ...
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Grain boundary relaxation and its effect on plasticity in nanocrystalline Fe
... the grain-boundary structure. Modification of the grain-boundary structure by heat treat- ment has been ...the grain boundary decreases during an- nealing or ...the grain size remained ...the ...
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Effect of Solution Treatment on Microstructure and Mechanical Properties of Cast Fine Grain CM 247 LC Superalloy
... nickel alloys may also form a ductile zone, preventing the initiation of grain-boundary fracture through enhanced the local ductility. However, increasing the dissolution temper- ature from 1494 K/2 h to 1533 K/2 ...
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