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Flash Annealing Of Copper Zirconium Aluminium Based Bulk Metallic Glasses
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Book Synopsis Flash-Annealing of Copper-Zirconium-Aluminium based Bulk Metallic Glasses by : Konrad Kosiba
Download or read book Flash-Annealing of Copper-Zirconium-Aluminium based Bulk Metallic Glasses written by Konrad Kosiba and published by GRIN Verlag. This book was released on 2017-08-16 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2017 in the subject Chemistry - Materials Chemistry, grade: 1,0, Dresden Technical University (Fakultät für Maschinenwesen), language: English, abstract: The first aim of the present work is to design, built and test a device being capable of rapidly heating and subsequently immediately quenching bulk metallic glass (BMG) specimens in a uniform and reproducible manner. The heating and ejection process of the BMG specimen is temperature-controlled, so that the heating rate and temperature to which the BMG is annealed to, can be varied. BMG composites consisting of B2 CuZr crystalline particles embedded in the glass shall be prepared. The occurrence of the shape-memory B2 CuZr phase and a good glass-forming ability limit the selection of the alloy system to Cu-Zr-Al. The high-temperature B2 CuZr phase is metastable at room temperature, yet rapid cooling of Cu-Zr-Al-based alloys enables to cast B2 CuZr BMG composites. One could speculate that the B2 CuZr phase forms as well during the devitrification of Cu-Zr-Al-based metallic glass at high heating rates. Indeed, a recent work yields hope rendering the preparation of B2 CuZr BMG composites by devitrification possible. Therefore, a rapid heating or flash-annealing device as it is termed here, is developed first. Thereby, flash-annealing is defined as rapid heating to a predefined temperature followed by immediate quenching. Cu-Zr-Al-based BMGs are flash-annealed at different heating rates to temperatures above the crystallization temperature and the influence of the heating rate on the phase formation shall be unravelled. The exact ejection temperature of the BMG specimen determines the volume fraction of the crystalline phase(s) and the crystal size distribution of the so-obtained composite. The immediate subsequent quenching at a high cooling rate is crucial here, since the partially crystallized supercooled liquid must be frozen in. The mechanical properties of the BMG composites and deformation mechanisms involved are studied. Moreover, the microstructure of these BMG composites allows to gain knowledge about crystallization kinetics of highly supercooled liquids during rapid heating.
Book Synopsis Flash-annealing of Cu-Zr-Al-based Bulk Metallic Glasses by : Konrad Kosiba
Download or read book Flash-annealing of Cu-Zr-Al-based Bulk Metallic Glasses written by Konrad Kosiba and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Structural Changes of Zr-based Bulk Metallic Glasses Upon Annealing and Deformation by : Nele Van Steenberge
Download or read book Study of Structural Changes of Zr-based Bulk Metallic Glasses Upon Annealing and Deformation written by Nele Van Steenberge and published by . This book was released on 2008 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Annealing and Superconductivity in Zr Based Metallic Glasses [microform] by : Gillian E. Marshall
Download or read book Thermal Annealing and Superconductivity in Zr Based Metallic Glasses [microform] written by Gillian E. Marshall and published by National Library of Canada. This book was released on 1986 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Structural Changes of Zr-based Bulk Metallic Glasses Upon Annealing and Deformation Treatments by : Nele van Steenberge
Download or read book Study of Structural Changes of Zr-based Bulk Metallic Glasses Upon Annealing and Deformation Treatments written by Nele van Steenberge and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glass Forming Ability and Relaxation Behavior of Zr Based Metallic Glasses by : Aravind Miyar Kamath
Download or read book Glass Forming Ability and Relaxation Behavior of Zr Based Metallic Glasses written by Aravind Miyar Kamath and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic glasses can be considered for many commercial applications because of the higher mechanical strength, corrosion and wear resistance when compared to crystalline materials. To consider them for novel applications, the challenge of preparing metallic glasses from the liquid melt phase and how the properties of metallic glasses change due to relaxation need to be understood better. The glass forming ability (GFA) with variation in composition and inclusion of different alloying elements was studied by using thermal techniques to determine important GFA indicators for Zr-based bulk metallic glasses (BMG). The effect of alloying elements, annealing temperature and annealing time on the thermal and structural relaxation of the BMGs was studied by using an annealing induced relaxation approach. The thermal relaxation was studied by measuring specific heat of the samples using differential scanning calorimeter (DSC) and calculating the enthalpy recovery on reheating in the BMG samples. The structural relaxation was also studied by using extended X-ray absorption fine structure (EXAFS) technique on the as-obtained and relaxed samples. The effects of alloying elements and annealing on electrical resistance were studied by using a two point probe. From the study, it was found that the currently used GFA indicators are inadequate to fully capture and identify the best GFA BMGs. The fragility (beta) of the melt is a new criterion that has been proposed to measure and analyze GFA. The enthalpy relaxation of Zrbased BMGs was found to follow a stretched exponential function, and the parameters obtained showed the BMGs used in the current study are strong glass formers. EXAFS studies showed variations in the structure of BMGs with changes in alloying elements. Furthermore, alloying elements were found to have an effect on the structure of the relaxed BMGs. The resistance of BMGs was found to decrease with relaxation which can be attributed to short range order on annealing.
Download or read book Nickel Alloys written by Ulrich Heubner and published by CRC Press. This book was released on 2000-09-01 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book evaluates the latest developments in nickel alloys and high-alloy special stainless steels by material number, price, wear rate in corrosive media, mechanical and metallurgical characteristics, weldability, and resistance to pitting and crevice corrosion. Nickel Alloys is at the forefront in the search for the most economic solutions to c
Book Synopsis CRC Handbook of Metal Etchants by : Perrin Walker
Download or read book CRC Handbook of Metal Etchants written by Perrin Walker and published by CRC Press. This book was released on 1990-12-11 with total page 1434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools.
Book Synopsis Nucleation in Condensed Matter by : Ken Kelton
Download or read book Nucleation in Condensed Matter written by Ken Kelton and published by Elsevier. This book was released on 2010-03-19 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Nucleation in Condensed Matter, key theoretical models for nucleation are developed and experimental data are used to discuss their range of validity. A central aim of this book is to enable the reader, when faced with a phenomenon in which nucleation appears to play a role, to determine whether nucleation is indeed important and to develop a quantitative and predictive description of the nucleation behavior. The third section of the book examines nucleation processes in practical situations, ranging from solid state precipitation to nucleation in biological systems to nucleation in food and drink. Nucleation in Condensed Matter is a key reference for an advanced materials course in phase transformations. It is also an essential reference for researchers in the field. Unified treatment of key theories, experimental evaluations and case studies Complete derivation of key models Detailed discussion of experimental measurements Examples of nucleation in diverse systems
Book Synopsis Nickel and Its Alloys by : Samuel Jacob Rosenberg
Download or read book Nickel and Its Alloys written by Samuel Jacob Rosenberg and published by . This book was released on 1968 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerospace Materials and Applications by : Biliyar N. Bhat
Download or read book Aerospace Materials and Applications written by Biliyar N. Bhat and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present volume is focused on documenting the novel processing, fabrication, characterization, and testing approaches that are unique to aerospace materials/structures/systems"--Preface.
Download or read book Welding Metallurgy written by Sindo Kou and published by John Wiley & Sons. This book was released on 2003-03-31 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated to include new technological advancements in welding Uses illustrations and diagrams to explain metallurgical phenomena Features exercises and examples An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
Book Synopsis Atomic Layer Deposition for Semiconductors by : Cheol Seong Hwang
Download or read book Atomic Layer Deposition for Semiconductors written by Cheol Seong Hwang and published by Springer Science & Business Media. This book was released on 2013-10-18 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.
Book Synopsis Engineering Materials 2 by : Michael F. Ashby
Download or read book Engineering Materials 2 written by Michael F. Ashby and published by Elsevier. This book was released on 2014-06-28 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a thorough explanation of the basic properties of materials; of how these can be controlled by processing; of how materials are formed, joined and finished; and of the chain of reasoning that leads to a successful choice of material for a particular application. The materials covered are grouped into four classes: metals, ceramics, polymers and composites. Each class is studied in turn, identifying the families of materials in the class, the microstructural features, the processes or treatments used to obtain a particular structure and their design applications. The text is supplemented by practical case studies and example problems with answers, and a valuable programmed learning course on phase diagrams.
Book Synopsis Titanium and Titanium Alloys by : Christoph Leyens
Download or read book Titanium and Titanium Alloys written by Christoph Leyens and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is an excellent reference for materials scientists and engineers needing to gain more knowledge about these engineering materials. Following introductory chapters on the fundamental materials properties of titanium, readers will find comprehensive descriptions of the development, processing and properties of modern titanium alloys. There then follows detailed discussion of the applications of titanium and its alloys in aerospace, medicine, energy and automotive technology.
Book Synopsis Additive Manufacturing Volume 2 by : Prashanth Konda Gokuldoss
Download or read book Additive Manufacturing Volume 2 written by Prashanth Konda Gokuldoss and published by MDPI. This book was released on 2020-04-15 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing (AM) is one of the manufacturing processes that warrants the attention of industrialists, researchers and scientists, because of its ability to produce materials with a complex shape without theoretical restrictions and with added functionalities. There are several advantages to employing additive manufacturing as the primary additive manufacturing process. However, there exist several challenges that need to be addressed systematically. A couple such issues are alloy design and process development. Traditionally alloys designed for conventional cast/powder metallurgical processes were fabricated using advanced AM processes. This is the wrong approach considering that the alloys should be coined based on the process characteristics and meta-stable nature of the process. Hence, we must focus on alloy design and development for AM that suits the AM processes. The AM processes, however, improve almost every day, either in terms of processing capabilities or processing conditions. Hence, the processing part warrants a section that is devoted to these advancements and innovations. Accordingly, the present Special Issue (book) focuses on two aspects of alloy development and process innovations. Here, 45 articles are presented covering different AM processes including selective laser melting, electron beam melting, laser cladding, direct metal laser sintering, ultrasonic consolidation, wire arc additive manufacturing, and hybrid manufacturing. I believe that this Special Issue bears is vital to the field of AM and will be a valuable addition.
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