Download or read book Mechanical Behavior of Zr Based Metallic Glasses and Their Nanocomposites written by Devinder Singh and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present chapter, results of our recent investigations on the role of gallium (Ga) on the aluminum (Al) site in Zr69.5Al7.5-xGaxCu12Ni11 metallic glass (MG) composition have been discussed. The material tailoring and cooling rate effects on the mechanical behavior of Zr-based metallic glasses and their nanocomposites have been studied. The substitution of Ga on the Al site in Zr-Al-Cu-Ni alloy affects the nucleation and growth characteristics of quasicrystals (QCs) and consequently changes the morphology of nanoquasicrystals. The Zr69.5Al7.5-xGaxCu12Ni11 system displayed metallic glass formation in the range of x = 0-7.5. In this process, we have come out with a new glass composition; Zr-Ga-Cu-Ni with glass transition temperature (Tg)-614 K. The effect of cooling rate on the glass forming ability (GFA) and mechanical properties for this new metallic glass composition has been discussed and compared with some other Zr-based metallic glasses. The various indentation parameters such as microhardness, yield strength, strain hardening constant, nature of shear band formation, and so on for the alloys have been analyzed. The study is focused on investigations of these materials to understand the structure (microstructure) property correlations.

Download or read book Metallic Glass Based Nanocomposites written by Sumit Sharma and published by CRC Press. This book was released on 2019-09-23 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic Glass-Based Nanocomposites: Molecular Dynamics Study of Properties provides readers with an overview of the most commonly used tools for MD simulation of metallic glass composites and provides all the basic steps necessary for simulating any material on Materials Studio. After reading this book, readers will be able to model their own problems on this tool for predicting the properties of metallic glass composites. This book provides an introduction to metallic glasses with definitions and classifications, provides detailed explanations of various types of composites, reinforcements and matrices, and explores the basic mechanisms of reinforcement-MG interaction during mechanical loading. It explains various models for calculating the thermal conductivity of metallic glass composites and provides examples of molecular dynamics simulations. Aimed at students and researchers, this book caters to the needs of those working in the field of molecular dynamics (MD) simulation of metallic glass composites.

Download or read book Bulk Metallic Glasses written by Michael Miller and published by Springer Science & Business Media. This book was released on 2007-09-26 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bulk metallic glasses are a new emerging field of materials with many desirable and unique properties. These amorphous materials have many diverse applications from structural applications to biomedical implants. This book provides a complete overview of bulk metallic glasses. It covers the principles of alloy design, glass formation, processing, atomistic modeling, computer simulations, mechanical properties and microstructures.

Download or read book Mechanical Behavior of a Zr based Bulk Metallic Glass written by Peravudh Lowhaphandu and published by . This book was released on 2000 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metallic Glasses written by Hu Huang and published by BoD – Books on Demand. This book was released on 2018-09-19 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic glasses are very promising engineering and functional materials due to their unique mechanical, chemical, and physical properties, attracting increasing attention from both scientific and industrial communities. However, their practical applications are greatly hindered due to three main problems: dimensional limit, poor tension plasticity, and difficulty in machining and shaping. Therefore, further investigation of these issues is urgently required. This book provides readers with recent achievements and developments in the properties and processing of metallic glasses, including mainly thermoplastic forming of metallic glasses (Chapter 2), atomic-level simulation of mechanical deformation of metallic glasses (Chapter 3), metallic glass matrix composites (Chapter 4), and tribo-electrochemical applications of metallic glasses (Chapters 5 and 6).

Download or read book Metallic Glasses and Their Composites written by D.V. Louzguine and published by Materials Research Forum LLC. This book was released on 2021-01-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic glasses and their crystal/glass composites find ever more applications in such fields as mini transformers, microelectromechanical devices, pressure sensors, precision surgical instruments, biological implants and sportive goods (springs, diaphragms, membranes, knife blades, electromagnetic wave shields, optical mirrors, power inductors, Coriolis flow meters, etc.). The book reviews recent research and suggests future developments, e.g. in the area of dual-phase composite/hybrid materials. Keywords: Metallic Glasses, Crystal/Glass Composites, Dual-phase Composite/Hybrid Materials, Supercooled Liquid, Devitrification, Magnetic Materials, Microelectromechanical Devices, Pressure Sensors, Orthopedic Screws, Precision Instruments, Biological Implants, Electromagnetic Wave Shields, Optical Mirrors, Power Inductors, Coriolis Flow Meters.

Download or read book Metallic Glasses written by Behrooz Movahedi and published by BoD – Books on Demand. This book was released on 2016-08-17 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic glasses and amorphous materials have attracted much more attention in the last two decades. A noncrystalline solid produced by continuous cooling from the liquid state is known as a glass. From the other point of view, a noncrystalline material, obtained by any other process, for example, vapor deposition or solid-state processing methods such as mechanical alloying, but not directly from the liquid state, is referred to as an amorphous material. At this moment, bulk metallic glasses (BMG) are appearing as a new class of metallic materials with unique physical and mechanical properties for structural and functional usage. Extreme values of strength, fracture toughness, magnetic properties, corrosion resistance, and other properties have been registered in BMG materials.

Download or read book Bulk Metallic Glasses written by C. Suryanarayana and published by CRC Press. This book was released on 2011-06-03 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of the large amount of research activity in this subfield of materials science and engineering, there is no single book available that provides background information, methods of synthesis, characterization procedures, properties, and potential and existing applications.of bulk metallic glasses. Written in an easy-to-understand style by pioneering researchers in this field, Bulk Metallic Glasses is one of the first books to coherently discuss the synthesis, processing, properties, and applications of these unique materials. The book explores the differences between nanocrystalline, glassy, and amorphous solids as well as the thermodynamics and kinetics and various processing methods of glass formation. It critically compares the different criteria for glass formation, describes the advantages and limitations of experimental methods for synthesizing bulk metallic glasses in assorted sizes and shapes, and examines the kinetics of crystallization/devitrification and the mechanisms of transformations. It also covers the density, diffusivity, thermal expansion, electrical resistivity, specific heat, viscosity, corrosion resistance, mechanical behavior, and magnetic properties of bulk metallic glasses. After presenting a wide array of applications, the book concludes with a discussion on the future of these materials. The adoption of bulk metallic glasses into existing systems is besieged by many obstacles but due to their interesting combination of properties, future applications may be unlimited. A one-stop resource on all aspects of bulk metallic glasses, this book demonstrates the immense potential of these novel materials. It clearly elucidates the background, detailed methods of synthesis and characterization, structure, and properties of bulk metallic glasses.

Download or read book Metallic Glasses and Their Composites written by D.V. Louzguine and published by Materials Research Forum LLC. This book was released on 2018-01-02 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of metallic glasses and dual-phase composite/hybrid materials is reviewed, as well as the glass transition process and the resulting structural phenomena. These materials exhibit high strength, extreme hardness, good wear resistance and large elastic deformation. Due to their excellent structural, functional, magnetic, chemical and biological properties metallic glasses are suitable for a great many applications, including in such areas as microelectromechanical devices, pressure sensors, orthopaedic screws and precision surgical instruments. Metallic Glasses, Metallic Glass Composites, Crystal/Glass Transition, Nano-Crystallization, Phase Separations, Supercooled Liquids, Glassy Nanocomposites, Nanoscale Quasicrystals, Mechanical Properties, Nanoscale Wear Resistance, Bauschinger Effect, Cryogenic Temperature, Porous Glasses, Nanocomposite Alloys, Soft Magnetic Alloys, Hard Magnetic Alloys, Magnetocaloric Effect, Corrosion Resistant Alloys, Surface Oxides, Catalysts

Download or read book Metallic Glasses and Their Oxidation written by Xinyun Wang and published by Elsevier. This book was released on 2022-11-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic Glasses and Their Oxidation provides a comprehensive review of the structures, properties, preparations, processing and applications of metallic glasses. Special attention is paid to the oxidation behaviors and related mechanisms of metallic glasses that occur during their preparation, processing and application. The book's authors introduce basic knowledge of metallic glasses, including their structures, properties, processing techniques and applications. Then, the theories and techniques commonly used in oxidation investigation are highlighted, including thermal oxidation, native oxidation, stressed oxidation, powder oxidation and oxidation simulation. The book closes with the influence of oxidation on the structures and performances of metallic glasses, proposes measures to control oxidation, and discusses how to take advantage of oxidation to reinforce materials or create new materials. Introduces the latest knowledge on the structures, properties, preparation, processing and application of metallic glasses Reviews the fundamental concepts surrounding metal oxidation, including techniques, devices and methods frequently used in oxidation research Discusses measures to control oxidation and the possibilities of using oxidation to reinforce metallic glasses or create new types of materials

Download or read book Metallic Glasses and Their Composites written by D.V. Louzguine and published by Materials Research Forum LLC. This book was released on 2021-01-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic glasses and their crystal/glass composites find ever more applications in such fields as mini transformers, microelectromechanical devices, pressure sensors, precision surgical instruments, biological implants and sportive goods (springs, diaphragms, membranes, knife blades, electromagnetic wave shields, optical mirrors, power inductors, Coriolis flow meters, etc.). The book reviews recent research and suggests future developments, e.g. in the area of dual-phase composite/hybrid materials. Keywords: Metallic Glasses, Crystal/Glass Composites, Dual-phase Composite/Hybrid Materials, Supercooled Liquid, Devitrification, Magnetic Materials, Microelectromechanical Devices, Pressure Sensors, Orthopedic Screws, Precision Instruments, Biological Implants, Electromagnetic Wave Shields, Optical Mirrors, Power Inductors, Coriolis Flow Meters.

Download or read book Plastic Deformation in Zirconium Based Metallic Glasses Via Nanoindentation written by Zenon Humberto Melgarejo-Pinto and published by . This book was released on 2016 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery in 1960 of Au-Si amorphous alloy by rapidly quenching with cooling rates up to 106 K/s metallic glasses became as an important research topic in the materials science community because of their intriguing processing routes, structure and properties. Recently, new multicomponent glassy- alloy systems, bulk metallic glasses (BMGs), appeared with lower critical cooling rates (103 to 1 K/s) and superlative properties, such as corrosion resistance, biocompatibility, and high strength/modulus ratio. Nevertheless, low temperature brittleness remains a concern. This brittleness comes from the tendency of plastic deformation to concentrate into extremely narrow shear bands. The present research pursues a better understanding of plastic deformation in metallic glasses (MGs) by studying, via nanoindentation, the effect of thermal history, composition, and loading paths on the mechanical behavior of Zr-based MGs. Differential scanning calorimeter (DSC) analysis helps to assess structural relaxation near glass transition temperature (Tg). Broadband nanoindentation creep (BNC) and load transient nanoindentation experiments contribute to characterize the hardness-strain rate behavior and indentation size effects, respectively. As-cast Zr50Cu45Al5 (at. %) metallic glasses evidenced hardness-strain rate loading path dependence, which gradually disappears by effect of the annealing treatments. Back-stresses effect is theorized as the cause of load path dependence behavior. Relaxation effect at low and high strain rates in BNC traces and load ramps “overshoots” in transient experiments enabled to confirm structural changes during mechanical deformation, which is not considered by thermal activation models of deformation. Most of the Zr-based metallic glasses exhibited measurable overshoot indentation size effect. Nonetheless, creep fraction size effect was observed just in as-cast Zr50Cu45Al5 alloys. Rheological mechanical model helps to both characterize the parameters involved in the plastic deformation of Zr-based metallic glasses and understand the competence between structural changes and mechanical deformation. Finally, nanoindentation analysis showed a gradient in hardness and modulus of as-cast ribbons and ingots, where the side with fastest cooling has the highest properties. The direction of the gradient is opposite to what other researchers have observed.

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 549 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 Mechanical Properties of Zr based Bulk Metallic Glasses written by Hao Yu and published by . This book was released on 2005 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metallic Glasses written by Keith K.C. Chan and published by MDPI. This book was released on 2018-07-02 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Metallic Glasses" that was published in Metals

Download or read book Microstructure Property Optimization in Metallic Glasses written by Baran Sarac and published by Springer. This book was released on 2015-03-12 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis consists of an in-depth study of investigating microstructure-property relationships in bulk metallic glasses using a novel quantitative approach by which influence of the second phase features on mechanical properties can be independently and systematically analyzed. The author evaluates and optimizes the elastic and plastic deformation, as well as the overall toughness of cellular honeycombs under in-plane compression and porous heterostructures under uniaxial tension. The study reveals three major deformation zones in cellular metallic glass structures, where deformation changes from collective buckling showing non-linear elasticity to localized failure exhibiting a brittle-like deformation, and finally to global sudden failure with negligible plasticity as the length to thickness ratio of the ligaments increases. The author found that spacing and size of the pores, the pore configuration within the matrix, and the overall width of the sample determines the extent of deformation, where the optimized values are attained for pore diameter to spacing ratio of one with AB type pore stacking.

Download or read book Studying the Fatigue Behavior of Zr based Bulk metallic Glasses and Composites written by Gongyao Wang and published by . This book was released on 2006 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: As excellent candidates for structural materials, the mechanical behavior of bulk metallic glasses (BMGs) is being widely studied. Although their fatigue behavior is very important for engineering applications, there are few studies on their fatigue behavior. Moreover, the understanding of the fatigue behavior is pretty limited. High-cycle fatigue experiments were conducted on notched Zr-based BMGs under tension-tension loading in air and vacuum at room temperature. A sparking phenomenon was found by infrared camera at the final fracture moment of Zr50Al10Cu30Ni10 in air. The fatigue-endurance limit (983 MPa) of Zr50Cu3--Al1010Pd3 was greatest among these Zr-base BMGs in air. The fatigue lives in vacuum and air are generally similar. LM001 and LM002 are commercial Zr-based BMGs. The X-ray diffraction results show that LM001 is a monolithic BMG and LM002 is a BMG composite containing crystalline phases. The fatigue-endurance limit (239 MPa) of LM002 was found to be significantly lower than that (567 MPa) of LM001, which indicates that the crystalline phase could degrade the resistances to fatigue. The compression strengths of Zr-based BMGs with partial crystallization are comparable to those of their fully amorphous alloys. However, the fatigue-endurance limits of these BMGs with partial crystallization were much lower than those of their fully amorphous alloys, which suggested that the fatigue behavior of a BMG is very sensitive to the microstructure. Fatigue cracks initiate from the outer surface of the sample, inclusions, and/or porosity. The propagation region exhibits a typical striation-type fracture. The final fast fracture region was very rough and occupied most of the fracture surface. The vein pattern and droplets with a melted indication were observed in the apparent melting region. A mechanistic understanding of the fatigue behavior of the Zr-based BMGs is suggested. The ratio of the fatigue-endurance limit to the tensile strength seems to increase with increasing Poisson's ratio. Moreover, The fatigue endurance limits of Zr-based, Cu-based, and Fe-based BMGs and composites were comparable to those of ductile crystalline alloys. The fatigue-endurance ratios of Zr-based BMGs were found to be comparable with those of high strength crystalline alloys.