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

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

Get Book Here

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.

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.

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.

Solidification and Crystallization Processing in Metals and Alloys

Solidification and Crystallization Processing in Metals and Alloys PDF Author: Hasse Fredriksson
Publisher: John Wiley & Sons
ISBN: 1119978327
Category : Technology & Engineering
Languages : en
Pages : 837

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Book Description
Solidification and Crystallization Processing in Metals and Alloys Hasse Fredriksson KTH, Royal Institute of Technology, Stockholm, Sweden Ulla Ã…kerlind University of Stockholm, Sweden Solidification or crystallization occurs when atoms are transformed from the disordered liquid state to the more ordered solid state, and is fundamental to metals processing. Conceived as a companion volume to the earlier works, Materials Processing during Casting (2006) and Physics of Functional Materials (2008), this book analyzes solidification and crystallization processes in depth. Starting from the thermodynamic point of view, it gives a complete description, taking into account kinetics and mass transfer, down to the final structure. Importantly, the book shows the relationship between the theory and the experimental results. Topics covered include: Fundamentals of thermodynamics Properties of interfaces Nucleation Crystal growth - in vapours, liquids and melts Heat transport during solidification processes Solidification structures - faceted, dendritic, eutectic and peritectic Metallic glasses and amorphous alloy melts Solidification and Crystallization Processing in Metals and Alloys features many solved examples in the text, and exercises (with answers) for students. Intended for Masters and PhD students as well as researchers in Materials Science, Engineering, Chemistry and Metallurgy, it is also a valuable resource for engineers in industry.

Metastable Microstructures

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

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Book Description


Second International Microgravity Laboratory (IML-2) Final Report

Second International Microgravity Laboratory (IML-2) Final Report PDF Author: R. S. Snyder
Publisher:
ISBN:
Category : Reduced gravity environments
Languages : en
Pages : 230

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Book Description


Rapidly Quenched Metals 6: Volume 2

Rapidly Quenched Metals 6: Volume 2 PDF Author: R.W. Cochrane
Publisher: Elsevier
ISBN: 0080984835
Category : Technology & Engineering
Languages : en
Pages : 575

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Book Description
Rapidly Quenched Metals 6: Volume 2

High-Temperature Levitated Materials

High-Temperature Levitated Materials PDF Author: David L. Price
Publisher: Cambridge University Press
ISBN: 1139489496
Category : Science
Languages : en
Pages : 239

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Book Description
One of the major experimental difficulties in studying materials at extreme temperatures is unwanted contamination of the sample through contact with the container. This can be avoided by suspending the sample through levitation. This technique also makes metastable states of matter accessible, opening up new avenues of scientific enquiry, as well as possible new materials for technological applications. This book describes several methods of levitation, the most important being aerodynamic, electromagnetic and electrostatic. It summarizes the state-of-the-art of the measurement of structural, dynamic and physical properties with levitation techniques, the considerable progress made in this field in the past two decades, and prospects for the future. It also explores the concepts behind the experiments and associated theoretical ideas. Aimed at researchers in physics, physical chemistry and materials science, the book is also of interest to professionals working in high-temperature materials processing and the aerospace industry.

NASA Historical Data Book: NASA launch systems, space transportation, human spaceflight, and space science, 1989-1998

NASA Historical Data Book: NASA launch systems, space transportation, human spaceflight, and space science, 1989-1998 PDF Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 1084

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Book Description