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Saturday, August 1, 2020 | History

1 edition of The Nature and Behavior of Grain Boundaries found in the catalog.

The Nature and Behavior of Grain Boundaries

A Symposium held at the TMS-AIME Fall Meeting in Detroit, Michigan, October 18-19, 1971

by Hsun Hu

  • 314 Want to read
  • 20 Currently reading

Published by Springer US in Boston, MA .
Written in English

    Subjects:
  • Materials

  • Edition Notes

    Statementedited by Hsun Hu
    Classifications
    LC ClassificationsTA459-492
    The Physical Object
    Format[electronic resource] :
    Paginationv.
    ID Numbers
    Open LibraryOL27076732M
    ISBN 101475701837, 1475701810
    ISBN 109781475701838, 9781475701814
    OCLC/WorldCa853262242

      Grain boundaries play an important role in dictating the mechanical and physical properties of nanocrystalline (NC) materials because of the increased volume fraction of intercrystalline components as the grain size decreases. In general, grain boundaries have a high energy level and there exists a thermodynamic driving force to reduce the overall area of grain boundaries through grain. Grain boundaries (GBs) play an important role in organic–inorganic halide perovskite solar cells, which have generally been recognized as a new class of materials for photovoltaic applications. To definitely understand the electrical structure and behavior of GBs, here we present Kelvin probe force microscopy and conductive atomic force microscopy (c-AFM) measurements of .

      Zhang Y. et al. Atomistic study of grain boundary sink strength under prolonged electron irradiation. J. Nucl. Mater. , 69–76 (). Bai X.-M. & Uberuaga B. P. The influence of grain boundaries on radiation-induced point defect production in materials: A review of atomistic studies. – (). @article{osti_, title = {On the nature of grain boundaries in nanocrystalline diamond.}, author = {Keblinski, P and Wolf, D and Cleri, F and Phillpot, S R and Gleiter, H and Materials Science Division and Karlsruhe, Forschungszentrum and Casaccia, Centro Ricerche}, abstractNote = {The atomic structures of a few representative large-unit-cell grain boundaries .

      More information: Kongtao Chen et al. The grain boundary mobility tensor, Proceedings of the National Academy of Sciences ().DOI: /pnas For Coble creep k is related to the diffusion coefficient of atoms along the grain boundary, Q = Q(grain boundary diffusion), m = 1, and b = 3. Because Q(grain boundary diffusion).


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The Nature and Behavior of Grain Boundaries by Hsun Hu Download PDF EPUB FB2

In view of the dramatically increased interest in the study of grain boundaries during the past few years, the Physical Metal­ lurgy Committee of The Institute of Metals Division of The Metal­ lurgical Society, AIME, sponsored a four-session symposium on the NATURE AND BEHAVIOR OF GRAIN BOUNDARIES, at the TMS-AIME Fall Meeting in Detroit, Michigan, October   In view of the dramatically increased interest in the study of grain boundaries during the past few years, the Physical Metal­ lurgy Committee of The Institute of Metals Division of The Metal­ lurgical Society, AIME, sponsored a four-session symposium on the NATURE AND BEHAVIOR OF GRAIN BOUNDARIES, at the TMS-AIME Fall Meeting in Detroit, Michigan, Author: Anning Hu.

The Interaction of Migrating Liquid Inclusions With Grain Boundaries in Solids.- An Electron Microscope Study of Configurational Equilibrium at Twin-Grain Boundary Intersections in Fcc Metals.- Grain Boundary Curvatures in Annealed Beta Brass.- Grain Boundary Motion and Related Phenomena.- On the Theory of Grain Boundary Motion.- The Behavior.

In view of the dramatically increased interest in the study of grain boundaries during the past few years, the Physical Metal lurgy Committee of The Institute of Metals Division of The Metal lurgical Society, AIME, sponsored a four-session symposium on the NATURE AND BEHAVIOR OF GRAIN BOUNDARIES, at the TMS-AIME Fall Meeting in Detroit, Michigan, October.

Grain boundaries, which usually exist in monolayer graphene, are [Show full abstract] apparently related to the elastic carrier scattering process, thus affecting the weak localization behavior. Grain boundary structure calculations.

The choice of the Cu 37 grain boundaries as a model system is motivated by discontinuous changes in properties in Σ5()[] Cu grain boundary measured. We present a molecular dynamic simulation on the mechanical strength and fracture behavior of graphene grain boundaries (GBs).

The intrinsic strength, critical failure strain, and failure mechanism of graphene GBs mainly rely on the temperature and inflection angle, whereas the Young's modulus does not vary significantly with either temperature or boundary configuration.

Tschopp, M. et al. Probing grain boundary sink strength at the nanoscale: Energetics and length scales of vacancy and interstitial absorption by grain boundaries in. Material properties,can be changed significantly by boundary migration. Studies of grain boundary mobility in matrices of poly- and single-crystals under the conditions of a difference in stored energy across the moving boundary have provided only limited advances towards understanding the behavior of grain boundaries.

A grain boundary is the interface between two grains, or crystallites, in a polycrystalline boundaries are 2D defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material.

Most grain boundaries are preferred sites for the onset of corrosion and for the precipitation of new phases from the solid. Suk-Joong L. Kang, in Sintering, Publisher Summary. The grain boundary in polycrystalline materials is not an ideal source and sink of atoms, and a critical driving force is needed if boundaries are to operate as a source.

The critical driving force for movement of atoms at the boundary varies considerably with the nature, structure, and orientation of the grain boundary. ♥ Book Title: The Nature and Behavior of Grain Boundaries ♣ Name Author: Hsun Hu ∞ Launching: Info ISBN Link: STANFORD ⊗ Detail ISBN code: ⊕ Number Pages: Total sheet ♮ News id: 1gIsAQAAIAAJ Download File Start Reading ☯ Full Synopsis: "In view of the dramatically increased interest in the study of grain boundaries.

Superplasticity and Grain Boundaries in Ultrafine-Grained Materials, Second Edition, provides cutting-edge modeling solutions surrounding the role of grain boundaries in processes such as grain boundary diffusion, relaxation and grain growth.

In addition, the book's authors explore the formation and evolution of the microstructure, texture and ensembles of grain boundaries. Knowledge of boundary structure is a prerequisite for understanding its behavior. It is convenient to divide grain boundaries into those whose misorientation is greater than a certain angle, known as high angle grain boundaries (HAGB) and those whose misorientation is less than low angle grain boundaries (LAGB).

Get this from a library. The Nature and Behavior of Grain Boundaries: a Symposium held at the TMS-AIME Fall Meeting in Detroit, Michigan, October[Hsun Hu] -- In view of the dramatically increased interest in the study of grain boundaries during the past few years, the Physical Metal­ lurgy Committee of The Institute of Metals Division of The.

The Role of Grain Boundaries and Surfaces in Ceramics Get immediate ebook access, if available*, when you order a print book Engineering. Materials Science Research. Free Preview Grain Boundaries and the Mechanical Behavior of Magnesium Oxide. Pages Using photoconductive atomic force microscopy and Kelvin probe force microscopy, we characterize the local electrical properties of grains and grain boundaries of organic-inorganic hybrid perovskite (CH 3 NH 3 PbI 3) thin films on top of a poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS)/ITO discrete photoconductivity levels are.

In this work, the effect of grain boundaries (GBs) on the mechanical properties and failure behavior of two-dimensional hexagonal boron nitride (h-BN) sheets are systematically and comprehensively investigated using density functional theory.

Results show that the formation of homoelemental bonds on GBs is a. As one-dimension line defects, grain boundaries (GBs) can affect many intrinsic properties of graphene.

In this paper, the mechanical properties of 20 representative graphene grain boundaries were studied using density functional theory and molecular dynamics.

With different arrangements of the pentagonal and heptagonal rings, the grain boundary may remain flat or. It has long been recognized that grain boundaries (GBs) are important microstructure features and can significantly affect the properties of polycrystalline materials the grain size is reduced to ultrafine or nano scale, the effects of GBs on the material properties become more significant since the traditional deformation mechanisms based on nucleation and propogation.

Grain boundaries. The internal interfaces that separate neighboring misoriented single crystals in a polycrystalline solid. Most solids such as metals, ceramics, and semiconductors have a crystalline structure, which means that they are made of atoms which are arranged in a three-dimensional periodic manner within the constituent crystals.identified.

In general, grain boundary regions (and twin boundaries) are also delineated because of their higher energies and, correspondingly, higher dissolution rates. 2. The mechanism of etching multiphase alloys is essentially electrochemical in nature. Because of a difference in potential between the structural components when the specimen is.data relating to the properties of grain boundaries in FBS polycrystals, bi-crystal thin films, and wires.

Based on this evidence, we conclude that grain boundaries in FBS are weak linked in a qualitatively similar way to grain boundaries in the cuprate superconductors, but also that the effects are a little less marked.