Download or read book Determination of Vacancy Mechanism for Grain Boundary Self diffusion by Computer Simulation written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is currently well established that the fast self-diffusion which occurs along grain boundaries (GBs) in metals must occur by a point defect exchange mechanism. For example, it is known that rapid GB diffusion can transport a net current of atoms along GBs during both sintering and diffusional creep, and that the two species in a binary substitutional alloy diffuse at different rates in GBs. However, it has not been possible to establish firmly whether the defect mechanism involves the exchange of atoms with vacancy or interstitial point defects. It has been suspected that the vacancy exchange mechanism must apply but it has been difficult to prove this hypothesis because of a lack of detailed information at the atomistic level. The results are presented of an effort to establish the GB self-diffusion mechanism in a bcc iron .sigma. = 5 (36.9°) (001) (310) tilt boundary using the combined methods of computer molecular statics and molecular dynamics simulation.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grain Boundary Diffusion Stresses and Segregation written by Boris S. Bokstein and published by Trans Tech Publications Ltd. This book was released on 2011-03-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special collection concentrates on three basic topics, the 35 peer-reviewed papers being grouped into: 1. Grain Boundary Diffusion, Segregation and Stresses, 2. Bulk Diffusion and Phase Formation and 3. Diffusion-Controlled Processes. It provides succinct and timely coverage of these topics. Volume is indexed by Thomson Reuters CPCI-S (WoS).
Download or read book Research in Progress written by and published by . This book was released on 1980 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanostructured Materials written by Carl C. Koch and published by William Andrew. This book was released on 2006-12-01 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials are one of the highest profile classes of materials in science and engineering today, and will continue to be well into the future. Potential applications are widely varied, including washing machine sensors, drug delivery devices to combat avian flu, and more efficient solar panels. Broad and multidisciplinary, the field includes multilayer films, atomic clusters, nanocrystalline materials, and nanocomposites having remarkable variations in fundamental electrical, optic, and magnetic properties.Nanostructured Materials: Processing, Properties and Applications, 2nd Edition is an extensive update to the exceptional first edition snapshot of this rapidly advancing field. Retaining the organization of the first edition, Part 1 covers the important synthesis and processing methods for the production of nanocrystalline materials. Part 2 focuses on selected properties of nanostructured materials. Potential or existing applications are described as appropriate throughout the book. The second edition has been updated throughout for the latest advances and includes two additional chapters.
Download or read book Kinetics of Materials written by Robert W. Balluffi and published by John Wiley & Sons. This book was released on 2005-12-07 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: KINETICS OF MATERIALS A CLASSROOM-TESTED TEXTBOOK PROVIDING A FUNDAMENTAL UNDERSTANDING OF BASIC KINETIC PROCESSES IN MATERIALS This textbook, reflecting the hands-on teaching experience of its three authors, evolved from Massachusetts Institute of Technology’s first-year graduate curriculum in the Department of Materials Science and Engineering. It discusses key topics collectively representing the basic kinetic processes that cause changes in the size, shape, composition, and atomistic structure of materials. Readers gain a deeper understanding of these kinetic processes and of the properties and applications of materials. Topics are introduced in a logical order, enabling students to develop a solid foundation before advancing to more sophisticated topics. Kinetics of Materials begins with diffusion. offering a description of the elementary manner in which atoms and molecules move around in solids and liquids. Next, the more complex motion of dislocations and interfaces is addressed. Finally, still more complex kinetic phenomena, such as morphological evolution and phase transformations, are treated. Throughout the textbook, readers are instilled with an appreciation of the subjects analytic foundations and, in many cases, the approximations commonly used in the field. The authors offer many extensive derivations of important results to help illuminate their origins. While the principal focus is on kinetic phenomena in crystalline materials, select phenomena in noncrystalline materials are also discussed. In many cases, the principles involved apply to all materials. Exercises with accompanying solutions are provided throughout Kinetics of Materials, enabling readers to put their newfound knowledge into practice. In addition, bibliographies are offered with each chapter, helping readers to investigate specialized topics in greater detail. Several appendices presenting important background material are also included. With its unique range of topics, progressive structure, and extensive exercises, this classroom- tested textbook provides an enriching learning experience for first-year graduate students.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1981 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Research in Progress Between and written by United States. Army Research Office and published by . This book was released on 1978 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grain Boundary Diffusion and Grain Boundary Segregation written by B. Bokstein and published by . This book was released on 1998 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomena of grain boundary diffusion and grain boundary segregation play major roles in determining the properties and behavior of a wide variety of materials. Even though the basic principles have been known for a long time, the field continues to yield a number of very challenging questions.
Download or read book Character of Grain Boundaries written by Man F. Yan and published by . This book was released on 1983 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IBM Journal of Research and Development written by and published by . This book was released on 1982 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of Physics and Chemistry of Solids written by and published by . This book was released on 1994 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defects and Diffusion in Metals written by and published by . This book was released on 2007 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetic Processes at Grain Boundaries Progress Report 15 August 1979 14 August 1980 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad investigation was made of kinetic processes at grain boundaries and the relationship between these kinetic processes and the boundary structure. The approach was both experimental and theoretical. Extensive use was made of high resolution experimental methods of investigating grain boundaries in specimens containing boundaries of controlled geometry. Computer simulation was also employed. Elements of the following projects were completed: a study of intrinsic and extrinsic secondary grain boundary dislocation structure in (001) high angle twist boundaries in MgO; a study of grain boundary dislocations in plane matching grain boundaries; an analysis and review of high angle grain boundaries as sources or sinks for point defects; an analysis and review of grain boundary structure in metals and ceramic oxides; and simulation of the structure of vacancies in high angle grain boundaries. Progress was made: in the development of a model for diffusion induced grain boundary migration; and the determination of the mechanism for grain boundary diffusion in metals.
Download or read book The Physics of Metals and Metallography written by and published by . This book was released on 1996 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
