This book is intended to give an introduction and a comprehensive overview concerning the main areas of surface magnetism with special emphasis on rare earth metals. Investigations in this ?eld require experimental techniques which are sensitive to the topmost layers on the one hand and simultaneously to magnetic properties on the other hand. Using additionally tools with a high lateral resolution the visualization of magnetic domains becomes possible. Theunderstandingofmagneticandelectronicbehaviorrequirestheknowledgeof the structure on a microscopic scale. Due to this important relationship the dep- dence of electronic on structural properties is the ?rst topic. This contains inves- gations not only on rare earth metals but additionally on 3d ferromagnetic systems. It is important to keep in mind that the chemical behavior of a surface det- mines the surface electronic properties. Thus, variations, e.g. due to adsorbate atoms, have a signi?cant in?uence. This aspect will be focused on as the next topic with the description of selected substrate layers which were exposed to different types of gaseous molecules. Investigations on the surface magnetism of itinerant ferromagnetic materials, including the in?uence of adsorbates on surface magnetic properties, and magnets with localized moments is the ?nal and main topic of this volume. It will end with the realization of laterally resolved spin polarized vacuum tunneling which enables to image magnetic domains on the nanometer scale. Acknowledgements This work summarizes my research on the above-mentioned topics performed at the Universities of Bielefeld, Mainz, Hamburg, and Dusseldorf."

Throughout the last two decades, the flat-steel production industry has experienced great success with the introduction of new technologies and manufacturing advances for both hot and cold steel-rolling. These improvements are resulting in significantly reduced production costs and better product quality. Recent consolidation of the steel industry which has led to improved sharing of technological breakthroughs between plants is creating an optimal atmosphere for the implementation of advances.

An assessment of industry progress, Flat-Rolled Steel Processes: Advanced Technologies details these improvements, assembling input from 62 international contributors specializing in various areas of research and development of steel production technology and manufacturing of flat steel products. It describes the challenges and the latest solutions to problems in four major areas:

• New concepts and modernization of rolling mills
• Modeling of flat-rolling processes
• Measurement, automation, and process control
• Strip profile and flatness control

Written for a broad audience, each chapter familiarizes readers with a different aspect of the latest theoretical and practical developments in the field. With its roots in the series of technical publications that summarize and review manufacturing developments for flat-rolled steel products, this volume explores the significant developments that are modernizing automation, process control, mathematical modeling, and quality-monitoring systems in flat-rolling processes. This includes the introduction of computer-based technology in both new and existing conventional rolling mills.

Providing expert insight and analysis related to technological improvements, this book will help readers understand the current state of flat steel production, how it evolved, and its future direction.

This book provides a detailed explanation of the cold spray process from a practical standpoint. Drawing on the authors' 36 years of research and development experience, it is firmly rooted in theory but also substantiated by empirical data and practical knowledge, offering potential users the information they need to recognize the advantages, as well as the limitations, of cold spray. This sets it apart from previous works on the subject, which have been purely academic. Cold spray technology has made great dramatic strides over the last 10 years and is now being used extensively in the aerospace, electronics, automotive, medical, and even the petrochemical industries. Most recently, cold spray of near-net shaped parts was accomplished - something previously assumed to be impossible because of the limitations of commercially available cold spray systems and a lack of fundamental understanding regarding the process. The cost of cold spray has also declined, making it appealing to industry through the introduction of new powders, surface preparation techniques, and recovery systems tailored to the cold spray process. Though primarily intended for users of the technology, this handbook is also a valuable resource for researchers interested in advances in cold spray materials, improved feedstock powders, advanced hardware and software development, surface preparation techniques, and the numerous applications developed to date. For example, cold spray aluminum alloys have been developed that offer the strength and ductility of wrought material in the as-sprayed condition. This has yet to be achieved by conventional powder consolidation methods including laser sintering, electron beam, and ultrasonic techniques. Other topics covered include additive manufacturing, structural repair, nondestructive evaluation, advanced cold spray materials, qualification requirements, cold spray systems comparison, and, finally, helium recovery. Thanks to its practical focus, the book provides readers with everything they need to understand, evaluate, and implement cold spray technology.

Offering complete coverage of the technologies, machine tools, and operations of a wide range of machining processes, Machining Technology presents the essential principles of machining and then examines traditional and nontraditional machining methods. Available for the first time in one easy-to-use resource, the book elucidates the fundamentals, basic elements, and operations of the general purpose machine tools used for the production of cylindrical and flat surfaces by turning, drilling and reaming, shaping and planing, milling, boring, broaching, and abrasive processes.

Pulling together information previously scattered throughout numerous research articles into one detailed resource, Physical Metallurgy of Direct Chill Casting of Aluminum Alloys connects the fundamentals of structure formation during solidification with the practically observed structure and defect patterns in billets and ingots. The author examines the formation of a structure, properties, and defects in the as-cast material in tight correlation to the physical phenomena involved in the solidification and the process parameters.

The book draws on the author's advanced research to provide a unique application of physical metallurgy to direct chill (DC) casting technology. He examines structure and defect formation- including macrosegregation and hot tearing. Each technology-centered chapter provides historical background before reviewing current developments. The author supports his conclusions with computer simulation results that have been correlated with highly progressive experimental data. He presents a logical system of structure and defect formation based on the specific features of the DC casting process. He also demonstrates that the seemingly controversial results reported in literature are, in fact, caused by the different ratio of the same mechanisms.

Compiling recent results and data, the book discusses the fundamentals of solidification together with metallurgical and technological aspects of DC casting. It gives new insight and perspective into DC casting research.

Metal injection molding combines the most useful characteristics of powder metallurgy and plastic injection molding to facilitate the production of small, complex-shaped metal components with outstanding mechanical properties. Handbook of Metal Injection Molding, Second Edition provides an authoritative guide to this important technology and its applications. Building upon the success of the first edition, this new edition includes the latest developments in the field and expands upon specific processing technologies. Part one discusses the fundamentals of the metal injection molding process with chapters on topics such as component design, important powder characteristics, compound manufacture, tooling design, molding optimization, debinding, and sintering. Part two provides a detailed review of quality issues, including feedstock characterisation, modeling and simulation, methods to qualify a MIM process, common defects and carbon content control. Special metal injection molding processes are the focus of part three, which provides comprehensive coverage of micro components, two material/two color structures, and porous metal techniques. Finally, part four explores metal injection molding of particular materials, and has been expanded to include super alloys and precious metals. With its distinguished editor and expert team of international contributors, the Handbook of Metal Injection Molding is an essential guide for all those involved in the high-volume manufacture of small precision parts, across a wide range of high-tech industries such as microelectronics, biomedical and aerospace engineering.

Metals have been essential to human civilisation for many thousands of years. With a broad range of applications they have found their way into virtually every aspect of our daily lives. Their durable and recyclable properties should make them ideal materials for a sustainable economy. But can metals live up to this promise? What are the economic, ecological, and social implications of their increasing use? How can we secure the supply of high-quality metals in the future? Do we need substitutes for scarce or especially toxic metals? We will face many such questions on the path towards sustainable production, trade and use of metals. This book brings together experts from many fields, with sometimes controversial opinions, to discuss the conditions and limits of a sustainable metals management. The ideas and goals of sustainability are not only explained theoretically, but also applied to various stages of the metal making and trading process.

This book highlights the overview of Spintronics, including What is Spintronics ?; Why Do We Need Spintronics ?; Comparative merit-demerit of Spintronics and Electronics ; Research Efforts put on Spintronics ; Quantum Mechanics of Spin; Dynamics of magnetic moments : Landau-Lifshitz-Gilbert Equation; Spin-Dependent Band Gap in Ferromagnetic Materials; Functionality of 'Spin' in Spintronics; Different Branches of Spintronics etc. Some important notions on basic elements of Spintronics are discussed here, such as - Spin Polarization, Spin Filter Effect, Spin Generation and Injection, Spin Accumulation, Different kinds of Spin Relaxation Phenomena, Spin Valve, Spin Extraction, Spin Hall Effect, Spin Seebeck Effect, Spin Current Measurement Mechanism, Magnetoresistance and its different kinds etc. Concept of Giant Magnetoresistance (GMR), different types of GMR, qualitative and quantitative explanation of GMR employing Resistor Network Theory are presented here. Tunnelling Magnetoresistance (TMR), Magnetic Junctions, Effect of various parameters on TMR, Measurement of spin relaxation length and time in the spacer layer are covered here. This book highlights the concept of Spin Transfer Torque (STT), STT in Ferromagnetic Layer Structures, STT driven Magnetization Dynamics, STT in Magnetic Multilayer Nanopillar etc. This book also sheds light on Magnetic Domain Wall (MDW) Motion, Ratchet Effect in MDW motion, MDW motion velocity measurements, Current-driven MDW motion, etc. The book deals with the emerging field of spintronics, i.e., Opto-spintronics. Special emphasis is given on ultrafast optical controlling of magnetic states of antiferromagnet, Spin-photon interaction, Faraday Effect, Inverse Faraday Effect and outline of different all-optical spintronic switching. One more promising branch i.e., Terahertz Spintronics is also covered. Principle of operation of spintronic terahertz emitter, choice of materials, terahertz writing of an antiferromagnetic magnetic memory device is discussed. Brief introduction of Semiconductor spintronics is presented that includes dilute magnetic semiconductor, feromagnetic semiconductor, spin polarized semiconductor devices, three terminal spintronic devices, Spin transistor, Spin-LED, and Spin-Laser. This book also emphasizes on several modern spintronics devices that includes GMR Read Head of Modern Hard Disk Drive, MRAM, Position Sensor, Biosensor, Magnetic Field sensor, Three Terminal Magnetic Memory Devices, Spin FET, Race Track Memory and Quantum Computing.

This book summarizes the research results of carbide control in special steel from the authors. It includes the evolution and control of carbide in special steel in the process of electroslag remelting, rolling, and heat treatment, as well as the effect of alloying treatment (rare earth, magnesium, nitrogen, titanium) as heterogeneous nucleating agent on the carbides in special steel. It helps the readers to understand the formation mechanism and control technology of carbide in special steel deeply for improving the quality of special steel further. The book is useful as a reference for researchers, practitioners, teachers, and engineering management team in the fields of metallurgy and materials.

This reference presents the classical perspectives that form the basis of heat treatment processes while incorporating descriptions of the latest advances to impact this enduring technology. The second edition of the bestselling Steel Heat Treatment Handbook now offers abundantly updated and extended coverage in two self-contained volumes: "Metallurgy and Technologies" and "Equipment and Process Design."

Continuing the tradition of the first edition, this comprehensive reference integrates metallurgical principles with engineering technology in terms of basic process, equipment operation, and design.Up-to-date references, new topics, and rewritten chapters bring additional breadth, depth, and clarity to process design for heat treatments. This second edition presents unique and timely coverage of treatments for tool steels, stainless steels, and powder metallurgy components. The book also contains new material on vacuum processes, designing quench processes, steel transformation mechanisms, updated nomenclature and classifications, nitriding techniques, metallurgical property testing, and distortion of heat-treated components.

Steel Heat Treatment Handbook, Second Edition provides a well-rounded resource for everyday use by advanced students and practitioners in metallurgy, process design, heat treatment, and mechanical and materials engineering.

One of two self-contained volumes belonging to the newly revised Steel Heat Treatment Handbook, Second Edition, this book focuses on process design, equipment, and testing used in steel heat treatment. Steel Heat Treatment: Equipment and Process Design presents the classical perspectives that form the basis of heat treatment processes while incorporating detailed descriptions of the latest advances since the 1997 publication of the first edition. This book covers the basic principles of heat treatment and the equipment used in modern industrial settings. It also offers detailed coverage of induction heat treatment as well as important types of furnaces, heat transfer, cooling processes, computation, power supplies, laser treatments, residual stress and loading, microstructural analysis, and quality control. The book features thoroughly updated and new information, most notably in the chapters on vacuum heat processing, designing quench processes, laser hardening, and metallurgical property testing. Steel Heat Treatment: Equipment and Process Design provides a focused resource for everyday use by advanced students and practitioners in metallurgy, process design, heat treatment, and mechanical and materials engineering.

The book describes conventional metal cutting process (turning, milling, shaper, grinding, drilling), computer aided manufacturing and modern machining processes (EDM, LBM, AJM, ECM), accompanying theoretical concepts with graphical represenations. Each chapter will be followed by several problems and questions that will help the reader to signifi cantly understand the formulas and the calculations of machining responses.

This text provides a comprehensive overview of the technology surrounding the brazing process to allow the inexperienced engineer, student or professional, to utilize fully this technology.

An all-in-one guide to the theory and applications of plasticity in metal forming, featuring examples from the automobile and aerospace industries Provides a solid grounding in plasticity fundamentals and material properties Features models, theorems and analysis of processes and relationships related to plasticity, supported by extensive experimental data Offers a detailed discussion of recent advances and applications in metal forming

This one-of-a-kind reference examines conventional and advanced methodologies for the quantitative evaluation of properties and characterization of microstructures in metals. It presents methods for uncovering valuable information including precipitate mechanisms, kinetics, stability, crystallographic orientation, the effects of thermo-mechanical processing, and residual stress. The editors of Analytical Characterization of Aluminum, Steel, and Superalloys enlist top industry researchers and practitioners from around the world to analyze the methodologies presented in their areas of expertise. Following traditional metallography methods, the book features an atlas of microstructures for aluminum, steel, and superalloys. The text also examines several material characterization methods rarely covered in other references, provides the framework for using advanced laboratory techniques, and discusses component failure identification methods and other measurements that are crucial to components manufacturing. Enabling the evolution of stronger and more function-specific compositions, Analytical Characterization of Aluminum, Steel, and Superalloys offers engineers, researchers, and materials scientists an invaluable reference of many advanced laboratory techniques in the context of characterization and property evaluation methodologies for metals and alloys.

This compact overview on physical metallurgy provides a detailed coverage of phase equilibria and phase transformations in metals and alloys. It presents the broad range of topics from processes of crystallization and diffusion mechanisms to plastic deformations, recrystallization and phase transformations. It presents the microstructures in various alloys, especially in iron alloys and steels. As an introductory work it is valuable to Material Scientists, Students and Engineers.

This book outlines the basic principles of metallurgical design of flat rolled steels to obtain flat steel products with required metallurgical and mechanical properties. These principles establish the requirements for steel chemical composition and the process parameters, including steelmaking, reheating, hot rolling, annealing and cold rolling. Metallurgical Design of Flat Rolled Steels reviews the current theories and experimental works conducted in this area, and gives a comparative analysis of the obtained results in application to a large variety of steels produced around the world. This guide presents essential material in a fashion that permits rapid application to practical problems while providing the structure and understanding necessary for long-term growth. It first explains how the components fit and work together to make a successful experimental design, then analyzes each component in detail, presenting the various approaches in the form of menus of different strategies and options. Then the text illustrates equations developed by various researchers and compares them in both table and graphic forms. Written in a clear and concise manner, the material is presented using a modular or "building block" approach so readers get to see how the entire structure fits together and learn the essential techniques and terminology necessary to develop more complex designs and analyses.

This book surveys the broad field of mechanical alloying from a scientific and technological perspective to form a timely and comprehensive resource valuable to both students and researchers. The treatment progresses from the historical background through a description of the process, the different metastable effects produced, and the mechanisms of phase formation to applications of mechanically alloyed products. The presentation is straightforward and easy to understand but does not compromise the scientific accuracy. It includes an unusually extensive listing of the results of different metastable effects obtained in various alloy systems along with thorough references in each chapter.

This book examines recent developments in inert anodes for aluminum electrolysis. It describes the composition and application of the most promising metal ceramic inert anode materials and nickel-oxide nanotechnology in the aluminum industry. The volume addresses concepts, analysis, properties, conductivity and corrosion, microstructure and microanalysis, and machinability of inert anodes for aluminum electrolysis. The book will be valuable to the aluminum industry, where inert anodes are having a profound impact in creating more energy saving, greener, and more functional aluminum materials in high-strength and high-temperature applications.

Capitalizing on the rapid growth and reduced costs of laser systems, laser cladding is gaining momentum, and in some instances replacing conventional techniques of depositing thin films because it can accommodate a great variety of materials, achieve uniform thickness and precise widths of layers, and provide improved resistance to wear and corrosion in the final product. Laser cladding technology also offers a revolutionary layered manufacturing and prototyping technique that can fabricate complex components without intermediate steps. Laser Cladding reviews the parameters, techniques and equipment, process modeling and control, and the physical metallurgy of alloying and solidification during laser cladding. The authors clarify the interconnections laser cladding has with CAD/CAM design; automation and robotics; sensors, feedback, and control; physics, material science, heat transfer, fluid dynamics, and powder metallurgy to promote further development and improved process quality of this growing technology. As the first book entirely dedicated to the topic, it also offers a history of its development and a guide to applications and market opportunities. While a considerable part of Laser Cladding is dedicated to industrial applications, this volume brings together valuable information illustrated with real case studies based on the authors' vast experience, and research and analysis in the field to provide a timely source for both academia and industry.

Grain Size Control reviews significant developments in the understanding of solid state grain size control over the past half century to provide an advanced text for materials science students and practitioners. Fifty years ago, Zener had already formulated his relationship of the inhibiting influence of fine particles on grain growth. The derivation of the Zener relationship is presented here, together with the refinements that have been introduced as a result of our increased understanding of granular arrays and the importance of irregularities in such arrays. The important effects of particle size and volume fraction are illustrated with applications drawn from the author's experiences with ferrous materials. The importance of particle solubility and of Ostwald ripening is emphasised, as any inadequacy in volume fraction and particle size can lead to abnormal grain growth. Consideration is also given to the grain growth inhibiting effect of thermally etched grooves operating in thin strip foils, when free surface energy effects become more important than grain boundary energy. Exercises, accompanied by worked examples at the end of the book, are given at the end of relevant chapters to enable the reader to calculate particle requirements and how these are attained in practice.

Reviewing an extensive array of procedures in hot and cold forming, casting, heat treatment, machining, and surface engineering of steel and aluminum, this comprehensive reference explores a vast range of processes relating to metallurgical component design-enhancing the production and the properties of engineered components while reducing manufacturing costs. It surveys the role of computer simulation in alloy design and its impact on material structure and mechanical properties such as fatigue and wear. It also discusses alloy design for various materials, including steel, iron, aluminum, magnesium, titanium, super alloy compositions and copper.