Metastable Phases And Microstructures
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Metastable Microstructures
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Author : Dipankar Banerjee
language : en
Publisher:
Release Date : 1993
Metastable Microstructures written by Dipankar Banerjee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Science categories.
Metastable Phases And Microstructures Volume 400
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Author : Rüdiger Bormann
language : en
Publisher:
Release Date : 1996-07-25
Metastable Phases And Microstructures Volume 400 written by Rüdiger Bormann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-07-25 with Science categories.
Materials with metastable structures and microstructures have been used with success to create unusual structural and functional properties and property combinations. Highly nonequilibrium technologies for creating metastable materials have been devised which allow materials to be prepared far away from the thermodynamic equilibrium. Using these methods, materials can now be designed to possess specific properties tailored to fit an application, rather than fitting an application to the properties of available materials. However, as these materials are metastable with respect to structural and compositional changes under temperature, there is great concern for understanding and controlling their limitations. This book features both fundamental as well as applied aspects of the subject by stressing the structure/property relationships, the conditions for stability of these materials, and the requirements for technological applications. In addition to the synthesis, processing, characterization, properties, and applications of such materials, attention is also focused on the modelling of structures, phenomena and processes. Topics include: synthesis and processing; thermodynamic and kinetics; phase transformations and properties and applications.
Metastable Phases And Microstructures
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Author : R. Bormann
language : it
Publisher:
Release Date :
Metastable Phases And Microstructures written by R. Bormann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Microstructural Study And Modeling Of Metastable Phases And Their Effect On Strenghthening Sic In Al Mg Cu Si Alloying System
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Author : Libor Kovarik
language : en
Publisher:
Release Date : 2006
Microstructural Study And Modeling Of Metastable Phases And Their Effect On Strenghthening Sic In Al Mg Cu Si Alloying System written by Libor Kovarik and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Aluminum-copper-magnesium alloys categories.
Abstract: In this work, microstructure evolution of an Al-3Mg-0.4Cu-0.12Si (wt%) alloy was studied during artificial aging at 180°C and 200°C. The primary investigation methods used were conventional and high resolution transmission electron microscopy (TEM and HRTEM), Z-contrast scanning TEM, and atom probe tomography (APT). Two new metastable phases are found to successively form during 180°C aging, designated as GPB and GPBII zones. The first forming GPB zones are rod-like regions aligned along 100Al directions. As supported by ab initio calculation, the GPB zones are L10 ordered, with alternating Mg enriched and Si, Cu, Al enriched layers. In the later stages of aging, GPBII are detected as nanometer size-scale, homogeneously dispersed, coherent particles. The crystal structure of the GPBII can be explained by a hexagonal lattice, with parameters a=0.7, c=0.4nm and space group P6̄2m. The stoichiometry of the proposed GPBII zone is Al3Mg3Si2Cu1, which in terms of the solute elements agrees with the elemental analysis. Ab initio calculations show very favorable enthalpy of formation of -14.4 kJ/mol. At higher temperature aging and longer aging times, such as 16 hours at 200°C, the microstructure is found to consist of two different crystallographic types of GPBII zones, which can be differentiated based on their location in the matrix. The isolated GPBII zones are comparable to those from lower temperature aging; however, the GPBII zones associated with S-phase particles have a different crystal structure, which seem to be crystallographically related to the structure of lath-like particles in some 6xxx series alloys. At the later stages of aging, the structure also consists of isolated S-phase particles, which have a rod-like morphology and modified orientation relationship (S''-phase). The origin of the modified orientation relationship for S''-phase was studied. It is found that its establishment is related to coherency at the (021)S//(014)Al interface, which is shown to coexist with the commonly present (001)S//(021)Al. Apart from the microstructural studies, attention was paid to the mechanical properties of alloys of similar composition from various aging treatments. The observed strengthening from the early stages of aging was modeled based on a contribution from GPB zones considering three different mechanisms.
Synthesis And Properties Of Metastable Phases
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Author : Theodore Justin Rowland
language : en
Publisher:
Release Date : 1980
Synthesis And Properties Of Metastable Phases written by Theodore Justin Rowland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Phase rule and equilibrium categories.
Phase Transformations In Metals And Alloys Third Edition Revised Reprint
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Author : David A. Porter
language : en
Publisher: CRC Press
Release Date : 1992-09-10
Phase Transformations In Metals And Alloys Third Edition Revised Reprint written by David A. Porter and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-09-10 with Technology & Engineering categories.
In the decade since the first edition of this popular text was published, the metallurgical field has undergone rapid developments in many sectors. Nonetheless, the underlying principles governing these developments remain the same. A textbook that presents these advances within the context of the fundamentals is greatly needed by instructors in the field Phase Transformations in Metals and Alloys, Second Edition maintains the simplicity that undergraduate instructors and students have come to appreciate while updating and expanding coverage of recently developed methods and materials. The book is effectively divided into two parts. The beginning chapters contain the background material necessary for understanding phase transformations - thermodynamics, kinetics, diffusion theory and the structure and properties of interfaces. The following chapters deal with specific transformations - solidification, diffusional transformation in solids and diffusionless transformation. Case studies of engineering alloys are incorporated to provide a link between theory and practice. New additions include an extended list of further reading at the end of each chapter and a section containing complete solutions to all exercises in the book Designed for final year undergraduate and postgraduate students of metallurgy, materials science, or engineering materials, this is an ideal textbook for both students and instructors.
Metastable Alloys Preparation And Properties
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Author : K.W. Samwer
language : en
Publisher: Elsevier
Release Date : 2014-01-13
Metastable Alloys Preparation And Properties written by K.W. Samwer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-13 with Technology & Engineering categories.
This volume contains most of the papers presented at symposium D, one of the four symposia that formed the 1988 Strasbourg Spring Conference. The three day programme consisted of nine oral sessions; a poster session and a plenary talk giving an overview of current topics in hard magnetic materials. Scientists involved in basic as well as applied research concentrated their discussions on the fundamental processes relevant for the formation of metastable alloys such as amorphous alloys (metallic glasses), microcrystalline, quasicrystalline and nanocrystalline alloys and their applications. These materials are proving to be of considerable interest to research workers because of their possible application in the electronics industry, e.g. as diffusion barriers in devices or as data storage media.
A Phase Field Model For The Evolution Of Martensite Microstructures In Metastable Austenites
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Author : Regina Müller
language : en
Publisher:
Release Date : 2016
A Phase Field Model For The Evolution Of Martensite Microstructures In Metastable Austenites written by Regina Müller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Microstructure Of Steels And Cast Irons
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Author : Madeleine Durand-Charre
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Microstructure Of Steels And Cast Irons written by Madeleine Durand-Charre and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Technology & Engineering categories.
The book comprises three parts. Part 1 gives a historical description of the development of ironworking techniques since the earliest times. Part 2 is the core of the book and deals with the metallurgical basis of microstructures, with four main themes: phase diagrams, solidification processes, diffusion, and solid state phase transformations. Part 3 begins by an introduction to steel design principles. It then goes on to consider the different categories of steels, placing emphasis on their specific microstructural features. Finally, a comprehensive reference list includes several hundred pertinent articles and books. The book is the work of a single author, thus ensuring uniformity and concision. It is intended for scientists, metallurgical engineers and senior technicians in research and development laboratories, design offices and quality departments, as well as for teachers and students in universities, technical colleges and other higher education establishments.
Metastable Phases And Microstructures
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Author :
language : en
Publisher:
Release Date : 1996
Metastable Phases And Microstructures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.