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Author : Wilfried Reinhold Wagner
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.E/5 ( download)
Download or read book Electron Microscope Investigation of High Angle Grain Boundaries written by Wilfried Reinhold Wagner and published by . This book was released on 1974 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Diane Vanderwalker
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (854 download)
Download or read book A High-resolution Transmission Electron Microscope Study of Precipitation on Low-angle Grain Boundaries in Al-Zn-Mg written by Diane Vanderwalker and published by . This book was released on 1981 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Valerie Randle
Publisher : CRC Press
ISBN 13 : 1351409883
Total Pages : 182 pages
Book Rating : 4.3/5 (514 download)
Download or read book The Measurement of Grain Boundary Geometry written by Valerie Randle and published by CRC Press. This book was released on 2017-07-12 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the selection of material for particular engineering properties becomes increasingly important in keeping costs down, methods for evaluating material properties also become more relevant. One such method examines the geometry of grain boundaries, which reveals much about the properties of the material. Studying material properties from their geometrical measurements, The Measurement of Grain Boundary Geometry provides a framework for a specialized application of electron microscopy for metals and alloys and, by extension, for ceramics, minerals, and semiconductors. The book presents an overview of the developments in the theory of grain boundary geometry and its practical applications in material engineering. It also covers the tunneling electron microscope (TEM), experimental aspects of data collection, data processing, and examples from actual investigations. Each step of the analysis process is clearly described, from data collection through processing, analysis, representation, and display to applications. The book also includes a glossary of terms. Exploring both the experimental and analytical aspects of the subject, this practical reference guide is essential for researchers and students involved in material properties, whether in physics, materials science, metallurgy, or physical chemistry.
Author : L.M Clarebrough
Publisher : Routledge
ISBN 13 : 135145319X
Total Pages : 446 pages
Book Rating : 4.3/5 (514 download)
Download or read book Electron Microscopy of Interfaces in Metals and Alloys written by L.M Clarebrough and published by Routledge. This book was released on 2021-09-02 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron Microscopy of Interfaces in Metals and Alloys examines the structure of interfaces in metals and alloys using transmission electron microscopy. The book presents quantitative methods of analysis and reviews the most significant work on interface structure over the last 20 years. It provides the first book description of the methods used for quantitative identification of Burgers vectors of interfacial dislocations, including the geometric analysis of periodicities in interface structure and the comparison of experimental and theoretical electron micrographs. The book explores low- and high-angle grain boundaries and interphase interfaces between neighboring grains, emphasizing interfacial dislocations and rigid-body displacements to the structure and properties of interfaces. It also analyzes the use of two-beam images and diffraction patterns for analysis and studies n-beam lattice imaging. The book includes numerous worked examples of the analysis of the structure of grain boundaries and interphase interfaces, which are particularly useful to those who need to consider the nature of intercrystalline interfaces.
Author : Richard Allen Page
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (259 download)
Download or read book High Voltage Electron Microscopy and Small Angle Neutron Scattering Investigation of Grain Boundary Cavitation in High Purity Copper written by Richard Allen Page and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Susan Elizabeth Babcock
Publisher :
ISBN 13 :
Total Pages : 714 pages
Book Rating : 4.:/5 (59 download)
Download or read book In-situ Investigation by Transmission Electron Microscopy of the Role of Secondary Grain Boundary Dislocations in the Migration and Atom Source/sink Behavior of Grain Boundaries written by Susan Elizabeth Babcock and published by . This book was released on 1987 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dirk Michael Kirch
Publisher : Cuvillier Verlag
ISBN 13 : 373692576X
Total Pages : 220 pages
Book Rating : 4.7/5 (369 download)
Download or read book In-Situ SEM Investigation of Individual and Connected Grain Boundaries in Aluminum written by Dirk Michael Kirch and published by Cuvillier Verlag. This book was released on 2008-05-05 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent development in experimental research on grain boundary and triple junction migration and structure in metals has been reviewed in this thesis. The dependence of grain boundary mobility on boundary character (misorientation and inclination) as well as the dependency of the triple junction mobility on the junction crystallography was addressed. The motion of individual grain boundaries and triple junctions was investigated in specially grown bi- and tricrystal samples of high purity aluminum. Orientation contrast imaging in an SEM combined with an in-house developed heating stage was used for in-situ tracking of the microstructure evolution at elevated temperatures. Furthermore, a novel laser powered heating stage was developed in order to enable the microstructure and -texture characterization at elevated temperature up to 1000°C. The migration of connected 100 tilt grain boundaries, was studied experimentally as a function of temperature between 400°C and 580°C. The study revealed that the majority of grain boundary systems were controlled by the lower mobility of the curved grain boundaries rather than the triple junction mobility within the investigated temperature range. Solely one grain boundary system (TJ-41) revealed two different kinetic regimes of coupled triple junction - grain boundary motion dependent on temperature proving the existence of a specific triple junction mobility and its dependence on triple junction crystallography. At low temperatures the motion of the grain boundaries was found to be retarded by the low triple junction mobility. In contrast, at elevated temperatures the system kinetics was found to be grain boundary controlled. The migration of grain boundary systems with triple junction, composed of mixed 110 twist and 40° 111 tilt grain boundaries, was studied experimentally in dependence of temperature for a range of boundary misorientations. In analogy to the study on connected 100 tilt grain boundaries, the majority of grain boundary systems were found to be controlled by the lower mobility of the curved grain boundaries. The only exception was found during investigation of the grain boundary system TJ-twist-19 revealing a system migration influenced by the triple junction mobility at all investigated temperatures, confirming the existence of a finite triple junction mobility and its dependence on triple junction crystallography. However, the boundary system TJ-twist-19 was not found to change its state of motion as observed for sample TJ-41. Aluminum bicrystal samples, containing individual 100 and 111tilt grain boundaries, were investigated experimentally in-situ in a temperature range between 300°C and 640°C for a range of boundary misorientations. The study revealed, for both systems, a different behavior of SAGBs in contrast to LAGBs. Grain boundaries with a rotation angle below 15° were found to be immobile during annealing at a given temperature in conjunction with a faceted grain boundary shape. Owing to grain boundary anisotropy the boundary facets correspond to boundary inclinations which possess a particularly low energy as confirmed by additional MS-simulation studies on bicrystals with equivalent crystallography. In contrast, LAGBs with a misorientation angle larger than 15° did not tend to form grain boundary facets. Instead, the grain boundaries assumed a curved shape and moved in steady-state in the entire investigated temperature range, as expected for curvature driven grain boundary motion assuming grain boundary isotropy. The microstructure evolution of individual circular grains in thecourse of grain shrinkage was simulated for bicrystals implementing a 2D-vertex model. The study revealed that the modeled grain shape is consistent with the experimentally observed boundary shape in bicrystal samples with equivalent crystallography. Furthermore, the study revealed that grain boundary anisotropy can affect the rate of grain area change. In the case of grains with a pronounced grain boundary anisotropy, a preferred formation of straight facets composed of low energy boundary planes was observed. As a result, the mean free energy of the grain boundary was reduced, causing a decrease of the capillary driving force. Owing to the decrease of P, the normal velocity of the respective segments decreased likewise, causing a retardation of grain shrinkage. Finally, the author believes that the results of the studies presented here lead to a better understanding of solitary and connected grain boundaries and their role in modern materials science and engineering.
Author : L.M Clarebrough
Publisher : Routledge
ISBN 13 : 1351453203
Total Pages : 350 pages
Book Rating : 4.3/5 (514 download)
Download or read book Electron Microscopy of Interfaces in Metals and Alloys written by L.M Clarebrough and published by Routledge. This book was released on 2021-09-02 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron Microscopy of Interfaces in Metals and Alloys examines the structure of interfaces in metals and alloys using transmission electron microscopy. The book presents quantitative methods of analysis and reviews the most significant work on interface structure over the last 20 years. It provides the first book description of the methods used for quantitative identification of Burgers vectors of interfacial dislocations, including the geometric analysis of periodicities in interface structure and the comparison of experimental and theoretical electron micrographs. The book explores low- and high-angle grain boundaries and interphase interfaces between neighboring grains, emphasizing interfacial dislocations and rigid-body displacements to the structure and properties of interfaces. It also analyzes the use of two-beam images and diffraction patterns for analysis and studies n-beam lattice imaging. The book includes numerous worked examples of the analysis of the structure of grain boundaries and interphase interfaces, which are particularly useful to those who need to consider the nature of intercrystalline interfaces.
Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (684 download)
Download or read book Analysis of Grain Boundaries, Twin Boundaries, and Te Precipitates in CdZnTe Grown by High-pressure Bridgeman Method written by and published by . This book was released on 1998 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain boundaries and twin boundaries in commercial Cd{sub 1-x}Zn(subscript x)Te, which is prepared by a high pressure Bridgeman technique, have been investigated with transmission electron microscopy, scanning electron microscopy, infrared light microscopy and visible light microscopy. Boundaries inside these materials were found to be decorated with Te precipitates. The shape and local density of the precipitates were found to depend on the particular boundary. For precipitates that decorate grain boundaries, their microstructure was found to consist of a single, saucer shaped grain of hexagonal Te (space group P3121. Analysis of a Te precipitate precipitates by selected area diffraction revealed the Te to be aligned with the surrounding Cd{sub 1-x}Zn(subscript x)Te grains. This alignment was found to match the (111) Cd{sub 1-x}Z(subscript x)Te planes with the (1{bar 1}01) planes of hexagonal Te. Crystallographic alignments between the Cd{sub 1-x}Zn(subscript x)Te grains were also observed for a high angle grain boundary. The structure of the grain boundaries and the Te/Cd{sub 1-x}Zn(subscript x)Te interface are discussed.
Download or read book Observation of Intrinsic and Extrinsic Secondary Grain Boundary Dislocations in (001) High Angle Twist Boundaries in MgO. written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes a systematic electron microscope investigation of possible GBD structures in (001) high angle twist boundaries in MgO using bicrystals of controlled geometry. Boundaries of this type were selected because they are relatively easy to prepare, and because GBD structures have been extensively observed and studied (3,4,7) in boundaries of this type in the metal gold.
Author : P. E. J. Flewitt
Publisher : Wiley
ISBN 13 : 9780471979517
Total Pages : 0 pages
Book Rating : 4.9/5 (795 download)
Download or read book Grain Boundaries written by P. E. J. Flewitt and published by Wiley. This book was released on 2001-04-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over recent years the understanding of grain boundaries, interphase boundaries and free surfaces has advanced greatly, leading to a clear recognition that these discontinuities make a significant contribution to the physical and mechanical properties of materials from multiphase metals and alloys to electronic materials. Grain Boundaries -Their Microstructure and Chemistry discusses the interrelationship between microstructure and chemistry of the grain boundary, with particular emphasis on the influence of the environment (air, liquid and liquid metal) and composition (bulk and impurity). This highly practical volume presents a brief background to interphase and grain boundaries, before considering in detail grain boundary composition and composition changes, and how grain boundary composition affects material properties. Very recent advances in techniques such as electron energy loss spectroscopy, high-resolution transmission electron microscopy and atom probe, and the facinating new insights into grain boundary, microstructure that they have revealed, are also discussed. Grain Boundaries - Their Microstructure and Chemistry is an indispensable text for design and safety engineers in many industries, including power and aerospace, as well as for materials scientists and engineers in academia and research institutes.
Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (871 download)
Download or read book Quantitative High Resolution Electron Microscopy of Grain Boundaries written by and published by . This book was released on 1996 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The [Sigma]11 (113)/[1{bar 1}0] symmetric tilt grain boundary has been characterized by high resolution transmission electron microscopy. The method by which the images are prepared for analysis is described. The statistics of the image data have been found to follow a normal distribution. The electron-optical imaging parameters used to acquire the image have been determined by nonlinear least-square image simulation optimization within the perfect crystal region of the micrograph. A similar image simulation optimization procedure is used to determine the atom positions which provide the best match between the experimental image and the image simulation.
Author : David G. Rickerby
Publisher : Springer Science & Business Media
ISBN 13 : 9401144516
Total Pages : 503 pages
Book Rating : 4.4/5 (11 download)
Download or read book Impact of Electron and Scanning Probe Microscopy on Materials Research written by David G. Rickerby and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Study Institute provided an opportunity for researchers in universities, industry and National and International Laboratories, from the disciplines ofmaterials science, physics, chemistry and engineering to meet together in an assessment of the impact of electron and scanning probe microscopy on advanced material research. Since these researchers have traditionally relied upon different approaches, due to their different scientific background, to advanced materials problem solving, presentations and discussion within the Institute sessions were initially devoted to developing a set ofmutually understood basic concepts, inherently related to different techniques ofcharacterization by microscopy and spectroscopy. Particular importance was placed on Electron Energy Loss Spectroscopy (EELS), Scanning Probe Microscopy (SPM), High Resolution Transmission and Scanning Electron Microscopy (HRTEM, HRSTEM) and Environmental Scanning Electron Microscopy (ESEM). It was recognized that the electronic structure derived directly from EELS analysis as well as from atomic positions in HRTEM or High Angle Annular Dark Field STEM can be used to understand the macroscopic behaviour of materials. The emphasis, however, was upon the analysis of the electronic band structure of grain boundaries, fundamental for the understanding of macroscopic quantities such as strength, cohesion, plasticity, etc.
Author : Thomas George Ference
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (223 download)
Download or read book A Transmission Electron Microscopy Investigation of a Chemically Induced Grain Boundary Faceting Transition written by Thomas George Ference and published by . This book was released on 1989 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jamie Hoyt Rose
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (29 download)
Download or read book Imaging Structure and Impurities in the Core of Silicon Dislocations and Grain Boundaries written by Jamie Hoyt Rose and published by . This book was released on 1985 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adam J. Schwartz
Publisher : Springer Science & Business Media
ISBN 13 : 1475732058
Total Pages : 352 pages
Book Rating : 4.4/5 (757 download)
Download or read book Electron Backscatter Diffraction in Materials Science written by Adam J. Schwartz and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystallographic texture or preferred orientation has long been known to strongly influence material properties. Historically, the means of obtaining such texture data has been though the use of x-ray or neutron diffraction for bulk texture measurements, or transmission electron microscopy or electron channeling for local crystallographic information. In recent years, we have seen the emergence of a new characterization technique for probing the microtexture of materials. This advance has come about primarily through the automated indexing of electron backscatter diffraction (EBSD) patterns. The first commercially available system was introduced in 1994, and since then of sales worldwide has been dramatic. This has accompanied widening the growth applicability in materials scienceproblems such as microtexture, phase identification, grain boundary character distribution, deformation microstructures, etc. and is evidence that this technique can, in some cases, replace more time-consuming transmission electron microscope (TEM) or x-ray diffraction investigations. The benefits lie in the fact that the spatial resolution on new field emission scanning electron microscopes (SEM) can approach 50 nm, but spatial extent can be as large a centimeter or greater with a computer controlled stage and montagingofthe images. Additional benefits include the relative ease and low costofattaching EBSD hardware to new or existing SEMs. Electron backscatter diffraction is also known as backscatter Kikuchi diffraction (BKD), or electron backscatter pattern technique (EBSP). Commercial names for the automation include Orientation Imaging Microscopy (OIMTM) and Automated Crystal Orientation Mapping (ACOM).
Author : Jeffrey Allan Eastman
Publisher :
ISBN 13 :
Total Pages : 508 pages
Book Rating : 4.E/5 ( download)
Download or read book Grain Boundary Structure in NiO and MgO written by Jeffrey Allan Eastman and published by . This book was released on 1985 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
