Download or read book Thermal and Time Stability of Amorphous Alloys written by A. M. Glezer and published by CRC Press. This book was released on 2017-09-07 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference is dedicated to the problem of time-temperature stability of amorphous (non-crystalline) metal alloys with strongly nonequilibrium structure and unique physical and mechanical properties that are obtained by quenching from the melt at a rate that exceeds one millions of degrees c.o.s. second. As a stability test, the behavior of the plasticity of amorphous alloys is studied. The book examines the fundamental characteristics of amorphous alloys, the basic laws of structural relaxation, generalized information about the phenomenon of the ductile-brittle transition (temper embrittlement), the development of physically justified methods of predicting the stability of the properties, and provides information about the attempts of controlling the structure for the purpose of suppressing or deceleration of the ductile-brittle transition and, as a consequence, increasing the temperature and temporal stability of the amorphous state.
Download or read book Thermal Stability and Phase Transformations of Multicomponent Iron Based Amorphous Alloys written by Dragica M Minić and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their excellent functional properties enabling their applicability in different fields of modern technology, amorphous alloys (metallic glasses) based on iron have been attracting attention of many scientists. In this chapter, the results of multidisciplinary research of five multicomponent iron-based amorphous alloys with different chemical composition, Fe81Si4B13C2, Fe79.8Ni1.5Si5.2B13C0.5, Fe75Ni2Si8B13C2, Fe73.5Cu1Nb3Si15.5B7, and Fe40Ni40P14B6, are summarized in order to study the influence of chemical composition on their physicochemical properties and functionality. The research involved thermal stability, mechanism, thermodynamics, and kinetics of microstructural transformations induced by thermal treatment and their influence on functional properties. Determination of crystallization kinetic triplets of individual phases formed in the alloys is also included. The results obtained for different alloys are compared, correlated, and discussed in terms of the alloy composition and microstructure.
Download or read book Thermal Stability and Glass forming Ability of Iron and Cast Iron based Bulk Amorphous Alloys written by Mahmoud Shapaan Shapaan and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulk Amorphous Alloys Preparation and Fundamental Characteristics written by A. Inoue and published by Trans Tech Publications Ltd. This book was released on 1998-10-19 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in bulk amorphous alloys has increased rapidly throughout the world and these materials have now gained a position of great importance in basic science and engineering materials technology. Bulk amorphous alloys based upon the Zr-Al-Ni-Cu, Zr-(Ti,Nb)-Al-Ni-Cu and Zr-Ti-Ni-Cu-Be systems have already achieved wide commercial success as components of various tehnical accessories ranging from sporting goods to optical instruments. Here is a state-of-the art review on this new group of materials, covering all areas of interest, ranging from the synthesis of these special alloys and their fundamental properties, to their engineering characteristics and applications. This work will therefore be of equal interest to those who wish to become fully acquainted with the subject, and to those who are already actively engaged in the field.
Download or read book Bulk Amorphous Alloys Practical Characteristics and Applications written by A. Inoue and published by Trans Tech Publications Ltd. This book was released on 1999-03-31 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapidly growing interest in bulk amorphous alloys has increasingly called for a substantial review to be made of the work published during the last ten years. Such a definitive review has now been published in two volumes.
Download or read book Bulk Metallic Glasses written by C. Suryanarayana and published by CRC Press. This book was released on 2017-11-22 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the fast pace of research in the field, the Second Edition of Bulk Metallic Glasses has been thoroughly updated and remains essential reading on the subject. It incorporates major advances in glass forming ability, corrosion behavior, and mechanical properties. Several of the newly proposed criteria to predict the glass-forming ability of alloys have been discussed. All other areas covered in this book have been updated, with special emphasis on topics where significant advances have occurred. These include processing of hierarchical surface structures and synthesis of nanophase composites using the chemical behavior of bulk metallic glasses and the development of novel bulk metallic glasses with high-strength and high-ductility and superelastic behavior. New topics such as high-entropy bulk metallic glasses, nanoporous alloys, novel nanocrystalline alloys, and soft magnetic glassy alloys with high saturation magnetization have also been discussed. Novel applications, such as metallic glassy screw bolts, surface coatings, hyperthermia glasses, ultra-thin mirrors and pressure sensors, mobile phone casing, and degradable biomedical materials, are described. Authored by the world’s foremost experts on bulk metallic glasses, this new edition endures as an indispensable reference and continues to be a one-stop resource on all aspects of bulk metallic glasses.
Download or read book Phase Stability of Amorphous Intermetallic Alloys written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase stability of amorphous intermetallic alloys, in terms of both formation and thermal stability, can be related to the alloy chemistry of the crystalline counterpart: the intermetallic compounds. The formation of the amorphous alloys is generally favored by the composition range in which the complex-structured intermetallic compounds and nearby eutectic point are present. The relative thermal stability of the amorphous intermetallic alloys, expressed by the reduced crystallization temperature, T/sub rc/, (T/sub rc/= T/sub c/T/sub m/, where T/sub c/ is the crystallization temperature °K, and T/sub m/ the melting temperature of the crystallized phase °K) increases with the increasing of the structural complexity of the crystalline counterparts. Based on recent data of amorphous intertransiton metal alloys, T/sub rc/ increases rapidly from less than 0.1 for the simple structures of bcc, fcc, or hcp, to nearly 0.4 for more complex structures such as A15, Laves-, sigma- and CaCu5-phases up to 0.6 for highly complex structures of eta-, delta-, and .mu.-phases. It can therefore be argued that alloy principles for the equilibrium compounds can be applied to the phase stability of the amorphous intermetallic alloys.
Download or read book Structure Properties and Processing of Two Phase Crystalline Amorphous W Based Alloys written by and published by . This book was released on 2000 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thermal stability and crystallization behavior of noncrystalline W-Ni alloys have been investigated. These materials are generated by the mechanical alloying process. The powders so produced consist of a noncrystalline matrix containing a dispersion of nanometer-sized crystalline W particles. We find that the crystallization temperatures of these materials are tied closely to the W content in the amorphous phase. This composition can be varied by alterations in either the overall W content of the alloy or the mechanical alloying time. Thermal stability studies - monitored by differential scanning calorimetry, x-ray diffraction, and transmission electron microscopy - have identified promising thermally stable noncrystalline W compositions. Consolidation of mechanically alloyed noncrystalline powders absent their crystallization is difficult. Several promising consolidation routes have been identified. These may permit production of fully dense noncrystalline powders in bulk form. Such material may have potential as kinetic energy penetrators.
Download or read book Phase Stability in Metals and Alloys written by Battelle Memorial Institute and published by . This book was released on 1967 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amorphous Metallic Alloys written by F. E. Luborsky and published by Butterworth-Heinemann. This book was released on 1983 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Index of amorphous alloys
Download or read book Amorphous Metallic Alloys written by BURTON and published by Elsevier. This book was released on 2013-10-22 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous Metallic Alloys covers the preparation and properties of alloys produced by rapid quenching from the molten state. This book focuses on three technologically important classes of magnetic amorphous alloy—transition metal-metalloid (TM-M) alloys, rare earth-transition metal (RE-TM) alloys, and transition metal-zirconium or hafnium alloys (TM-Zr-Hf). The melt-quenched transition metal-metalloid and transition metal-zirconium type alloys are also emphasized. This text likewise explains in detail how amorphous atomic structure affects magnetic, mechanical, chemical, corrosion, and electrical characteristics. Other topics include glass forming ability in metallic materials, scattering theory of amorphous metals, dynamics of inhomogeneous plastic flow, and powder production processes. This publication is intended for students and researchers conducting work on amorphous metallic alloys.
Download or read book Thin Film Shape Memory Alloys written by Shuichi Miyazaki and published by Cambridge University Press. This book was released on 2009-09-03 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, the first dedicated to this exciting and rapidly growing field, enables readers to understand and prepare high-quality, high-performance TiNi shape memory alloys (SMAs). It covers the properties, preparation and characterization of TiNi SMAs, with particular focus on the latest technologies and applications in MEMS and biological devices. Basic techniques and theory are covered to introduce new-comers to the subject, whilst various sub-topics, such as film deposition, characterization, post treatment, and applying thin films to practical situations, appeal to more informed readers. Each chapter is written by expert authors, providing an overview of each topic and summarizing all the latest developments, making this an ideal reference for practitioners and researchers alike.
Download or read book Amorphous Nanocrystalline Alloys written by A.M. Glezer and published by CRC Press. This book was released on 2017-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous-nanocrystalline alloys are a relatively new class of materials born from the rapid development of new technologies and different methods of producing amorphous and nanocrystalline powders and films, compacting, melt quenching, megaplastic deformation, implantation, laser, plasma, and other high-energy methods. This book considers methods of producing these materials (melt quenching, controlled crystallization, deformation effect, and pulse treatments (photon, laser and ultrasound), spraying thin films, and ion implantation). Theoretical and experimental studies describe plastic deformation mechanisms and physico-mechanical properties. Practical applications are also presented.
Download or read book Metallic Glasses written by Dragica Minić and published by BoD – Books on Demand. This book was released on 2020-02-05 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term "metallic glasses" is widely used to denote the amorphous alloys obtained by rapid quenching techniques. These materials are characterized by short range atom ordering without translational periodicity of the structure. Kinetic and thermodynamic metastability is one of the main characteristics generally related to metallic glasses, while their thermally induced microstructural transformations could result in deterioration or improvement of the functional properties. Due to their favorable magnetic, electrical, mechanical, and anti-corrosion properties, metallic glasses as new and attractive materials have found application in many areas of modern industries - electronics, construction industry, aerospace industry; as well as chemistry, biomedicine, and surgery.
Download or read book Rapidly Quenched Metals written by S Steeb and published by Elsevier. This book was released on 2012-12-02 with total page 1163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapidly Quenched Metals, Volume I covers the proceedings of the Fifth International Conference on Rapidly Quenched Metals, held in Wurzburg, Germany on September 3-7, 1984. The book focuses on amorphous and crystalline metals formed by rapid quenching from the melt. The selection first covers the scope and trends of developments in rapid solidification technology, rapid solidification, and undercooling of liquid metals by rapid quenching. Discussions focus on experimental method, powders, strip, particulate production, consolidation, and alloys and alloy systems. The text then examines the solidification of undercooled liquid alloys entrapped in solid; crystallization kinetics in undercooled droplets; and grain refinement in bulk undercooled alloys. The manuscript tackles the undercooling of niobium-germanium alloys in a 100 meter drop tube; influence of process parameters on the cooling rate of the meltspinning process; and the mechanism of ribbon formation in melt-spun copper and copper-zirconium. The formation and structure of thick sections of rapidly-solidified material by incremental deposition and production of ultrafine dispersions of rare earth oxides in Ti alloys using rapid solidification are also mentioned. The selection is a valuable reference for physicists, chemists, physical metallurgists, and engineers.
Download or read book written by 山形大学 and published by . This book was released on with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Advanced Magnetic Materials written by Yi Liu and published by Springer Science & Business Media. This book was released on 2008-11-23 with total page 1844 pages. Available in PDF, EPUB and Kindle. Book excerpt: In December 2002, the world's first commercial magnetic levitation super-train went into operation in Shanghai. The train is held just above the rails by magnetic levitation (maglev) and can travel at a speed of 400 km/hr, completing the 30km journey from the city to the airport in minutes. Now consumers are enjoying 50 GB hard drives compared to 0.5 GB hard drives ten years ago. Achievements in magnetic materials research have made dreams of a few decades ago reality. The objective of the four volume reference, Handbook of Advanced Magnetic Materials, is to provide a comprehensive review of recent progress in magnetic materials research. Each chapter will have an introduction to give a clear definition of basic and important concepts of the topic. The details of the topic are then elucidated theoretically and experimentally. New ideas for further advancement are then discussed. Sufficient references are also included for those who wish to read the original work. In the last decade, one of the most significant thrust areas of materials research has been nanostructured magnetic materials. There are several critical sizes that control the behavior of a magnetic material, and size effects become especially critical when dimensions approach a few nanometers, where quantum phenomena appear. The first volume of the book, Nanostructured Advanced Magnetic Materials, has therefore been devoted to the recent development of nanostructured magnetic materials, emphasizing size effects. Our understanding of magnetism has advanced with the establishment of the theory of atomic magnetic moments and itinerant magnetism. Simulation is a powerful tool for exploration and explanation of properties of various magnetic materials. Simulation also provides insight for further development of new materials. Naturally, before any simulation can be started, a model must be constructed. This requires that the material be well characterized. Therefore the second volume, Characterization and Simulation provides a comprehensive review of both experimental methods and simulation techniques for the characterization of magnetic materials. After an introduction, each section gives a detailed description of the method and the following sections provide examples and results of the method. Finally further development of the method will be discussed. The success of each type of magnetic material depends on its properties and cost which are directly related to its fabrication process. Processing of a material can be critical for development of artificial materials such as multilayer films, clusters, etc. Moreover, cost-effective processing usually determines whether a material can be commercialized. In recent years processing of materials has continuously evolved from improvement of traditional methods to more sophisticated and novel methods. The objective of the third volume, Processing of Advanced Magnetic Materials, is to provide a comprehensive review of recent developments in processing of advanced magnetic materials. Each chapter will have an introduction and a section to provide a detailed description of the processing method. The following sections give detailed descriptions of the processing, properties and applications of the relevant materials. Finally the potential and limitation of the processing method will be discussed. The properties of a magnetic material can be characterized by intrinsic properties such as anisotropy, saturation magnetization and extrinsic properties such as coercivity. The properties of a magnetic material can be affected by its chemical composition and processing route. With the continuous search for new materials and invention of new processing routes, magnetic properties of materials cover a wide spectrum of soft magnetic materials, hard magnetic materials, recording materials, sensor materials and others. The objective of the fourth volume, Properties and Applications of Advanced Magnetic Materials, is to provide a comprehensive review of recent development of various magnetic materials and their applications. Each chapter will have an introduction of the materials and the principles of their applications. The following sections give a detailed description of the processing, properties and applications. Finally the potential and limitation of the materials will be discussed.
