Metastable Microstructures

Metastable Microstructures PDF Author: Dipankar Banerjee
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 360

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Book Description

Metastable Microstructures

Metastable Microstructures PDF Author: Dipankar Banerjee
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 360

Get Book Here

Book Description


Solidification of Containerless Undercooled Melts

Solidification of Containerless Undercooled Melts PDF Author: Dieter M. Herlach
Publisher: John Wiley & Sons
ISBN: 3527647929
Category : Technology & Engineering
Languages : en
Pages : 569

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Book Description
All metallic materials are prepared from the liquid state as their parent phase. Solidification is therefore one of the most important phase transformation in daily human life. Solidification is the transition from liquid to solid state of matter. The conditions under which material is transformed determines the physical and chemical properties of the as-solidified body. The processes involved, like nucleation and crystal growth, are governed by heat and mass transport. Convection and undercooling provide additional processing parameters to tune the solidification process and to control solid material performance from the very beginning of the production chain. To develop a predictive capability for efficient materials production the processes involved in solidification have to be understood in detail. This book provides a comprehensive overview of the solidification of metallic melts processed and undercooled in a containerless manner by drop tube, electromagnetic and electrostatic levitation, and experiments in reduced gravity. The experiments are accompanied by model calculations on the influence of thermodynamic and hydrodynamic conditions that control selection of nucleation mechanisms and modify crystal growth development throughout the solidification process.

Metastable Solids from Undercooled Melts

Metastable Solids from Undercooled Melts PDF Author: Dieter Herlach
Publisher: Elsevier
ISBN: 0080468861
Category : Technology & Engineering
Languages : en
Pages : 445

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Book Description
This book presents the physical concepts and tools to characterize and describe the formation of metastable solids from undercooled melts. Its aim is to facilitate understanding of the development of the science and technology of solidification of melts and to introduce new concepts within this exciting research field in order to fulfil the challenges of the future in the field of undercooled melts. A comprehensive description of the science and applications of the undercooling phenomenon is given. It is composed of several main parts: experimental techniques for undercooling; characterization of the undercooled melt as the first step in rapid solidification; introducing the concepts of modern theories of rapid dendrite and eutectic growth and their comparison with experimental results, and a survey of metastable materials formed from the non-equilibrium state of an undercooled melt.* Showing clear links to possible application of results obtained from basic research * The subject matter is multidisciplinary and will be of interest to material scientists, physicists, physical chemists, mechanical and electrical engineers

Solidification of Containerless Undercooled Melts

Solidification of Containerless Undercooled Melts PDF Author: Dieter M. Herlach
Publisher: John Wiley & Sons
ISBN: 9783527331222
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description
All metallic materials are prepared from the liquid state as their parent phase. Solidification is therefore one of the most important phase transformation in daily human life. Solidification is the transition from liquid to solid state of matter. The conditions under which material is transformed determines the physical and chemical properties of the as-solidified body. The processes involved, like nucleation and crystal growth, are governed by heat and mass transport. Convection and undercooling provide additional processing parameters to tune the solidification process and to control solid material performance from the very beginning of the production chain. To develop a predictive capability for efficient materials production the processes involved in solidification have to be understood in detail. This book provides a comprehensive overview of the solidification of metallic melts processed and undercooled in a containerless manner by drop tube, electromagnetic and electrostatic levitation, and experiments in reduced gravity. The experiments are accompanied by model calculations on the influence of thermodynamic and hydrodynamic conditions that control selection of nucleation mechanisms and modify crystal growth development throughout the solidification process.

Principles of Solidification

Principles of Solidification PDF Author: Martin Eden Glicksman
Publisher: Springer Science & Business Media
ISBN: 1441973443
Category : Technology & Engineering
Languages : en
Pages : 517

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Book Description
“Principles of Solidification” offers comprehensive descriptions of liquid-to-solid transitions encountered in shaped casting, welding, and non-biological bulk crystal growth processes. The book logically develops through careful presentation of relevant thermodynamic and kinetic theories and models of solidification occurring in a variety of materials. Major topics encompass the liquid-state, liquid-solid transformations, chemical macro- and microsegregation, purification by fractional crystallization and zone refining, solid-liquid interfaces, polyphase freezing, and rapid solidification processing. Solid-liquid interfaces are discussed quantitatively both as sharp and diffuse entities, with supporting differential geometric descriptions. The book offers: • Detailed mathematical examples throughout to guide readers • Applications of solidification and crystal growth methodologies for preparation and purification of metals, ceramics, polymers and semiconductors • Appendices providing supporting information on special topics covered in the chapters. Readers in materials, metallurgical, chemical, and mechanical engineering will find this to be a useful source on the subjects of solidification and crystal growth. Chemists, physicists, and geologists concerned with melting/freezing phenomena will also find much of value in this book.

Science and Technology of the Undercooled Melt

Science and Technology of the Undercooled Melt PDF Author: P.R. Sahm
Publisher: Springer Science & Business Media
ISBN: 940094456X
Category : Science
Languages : en
Pages : 296

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Book Description
"SCIENCE AND TECHNOLOGY OF '!HE UNDEROLED MELT" This title was chosen as the topical headline of the Advanced Research Workshop (ARW) from March 17 to 22 1985, held at the Castle of Theuern. The usual term "Rapid Solidification" is an overlapping description. Due to the fact that nucleation is so eminently important for the undercooling of a melt and this, in turn, is an important characteristic of rapid solidifi cation, undercooling plays an essential role in "rapid solidification." The undercooled melt has caused an "accelerated evolution" (if not a revolution) in materials science during the last decade. Several rather exciting concepts with interesting potential for novel applications are being pursued presently in various laboratories and companies. They concern not only new processes and ha~ware developments, but also present chal lenging perspectives for ventures, including the founding of new companies; or they promise growth possibilities with established larger and smaller industrial establishments.

Phase Transformations in Multicomponent Melts

Phase Transformations in Multicomponent Melts PDF Author: Dieter M. Herlach
Publisher: John Wiley & Sons
ISBN: 3527624058
Category : Technology & Engineering
Languages : en
Pages : 435

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Book Description
Bringing together the concerted efforts of the multicomponent materials community in one decisive reference work, this handbook covers all the important aspects from fundamentals to applications: thermodynamics, microscopic processes, solidification, simulation and modeling. As such, it provides a vital understanding of melt and solidification processes, treating all simulation techniques for continuous and discrete systems, such as molecular dynamics, Monte Carlo, and finite elements calculations.

Non-equilibrium Processing of Materials

Non-equilibrium Processing of Materials PDF Author: C. Suryanarayana
Publisher: Elsevier
ISBN: 0080537626
Category : Technology & Engineering
Languages : en
Pages : 459

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Book Description
The rapid technological developments during the later half of the 20th century have demanded materials that are stronger, capable of use at much higher temperatures, more corrosion-resistant, and much less expensive than those currently used. These demands become even more significant on the threshold of the new century and the millennium. Significant improvements in properties can only be achieved by processing the materials under far-from-equilibrium (or non-equilibrium) conditions. Several new processing technologies have been developed during the past few decades including, rapid solidification, spray forming, mechanical alloying, ion mixing, vapor deposition, laser processing and plasma processing. Remarkable advances have been made in recent years in the science and technology of these processes used to synthesize, characterize, and apply these materials processed under non-equilibrium conditions. Some of these techniques have evolved from laboratory curiosity to commercial-scale manufacturing in just a few years. In other cases, industrial necessity prompted development of the technology, and the science followed later. The chapters in this book have been written by people who are world-recognized experts in their respective fields. Each chapter describes the principles, processing techniques, special features of the materials produced, and their applications. An extensive list of references is provided at the end of each chapter that will facilitate location of additional information on specific aspects of any technique.

Fundamental Properties Of Nanostructured Materials - Proceedings Of The National School Of The Condensed Matter Group

Fundamental Properties Of Nanostructured Materials - Proceedings Of The National School Of The Condensed Matter Group PDF Author: Dino Fiorani
Publisher: World Scientific
ISBN: 9814550086
Category :
Languages : en
Pages : 314

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Book Description
The purpose of this school, addressed to young researchers and graduate students (physicists, chemists and engineers), was to provide the basis of fundamental properties of nanostructured materials and an introduction to more specialized and up-to-date topics. The topics were remarkably interdisciplinary, covering theory, materials preparation, structural characterization, thermodynamic aspects and mechanical, optical, electrical and magnetic properties.

Metastable Alloys: Preparation and Properties

Metastable Alloys: Preparation and Properties PDF Author: K.W. Samwer
Publisher: Elsevier
ISBN: 008098360X
Category : Technology & Engineering
Languages : en
Pages : 677

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Book Description
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.