Download or read book Ultrasonic Processing of 6061 based Nanocomposites for High Performance Applications written by and published by . This book was released on 2015 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TMS 2017 146th Annual Meeting Exhibition Supplemental Proceedings written by The Minerals, Metals & Materials Society TMS and published by Springer. This book was released on 2017-02-18 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection features papers presented at the 146th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.

Download or read book Advances in the Science and Engineering of Casting Solidification written by Laurentiu Nastac and published by Springer. This book was released on 2016-12-16 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection encompasses the following four areas: (1) Solidification processing: theoretical and experimental investigations of solidification processes including castings solidification, directional solidification of alloys, electromagnetic stirring, ultrasonic cavitation, mechanical vibration, active cooling and heating, powder bed-electron beam melting additive manufacturing, etc. for processing of metals, polymers and composite materials; (2) Microstructure Evolution: theoretical and experimental studies related to microstructure evolution of materials including prediction of solidification-related defects and particle pushing/engulfment aspects; (3) Novel Casting and Molding Processes: modeling and experimental aspects including high pressure die casting, permanent casting, centrifugal casting, low pressure casting, 3D silica sand mold printing, etc.; and (4) Cast Iron: all aspects related to cast iron characterization, computational and analytical modeling, and processing.

Download or read book Numerical Modeling of the Dispersion of Ceramic Nanoparticles During Ultrasonic Processing of 6061 based Nanocomposites written by and published by . This book was released on 2014 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental and Theoretical Analyses on the Ultrasonic Cavitation Processing of Al based Alloys and Nanocomposites written by Shian Jia and published by . This book was released on 2015 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strong evidence is showing that microstructure and mechanical properties of a casting component can be significantly improved if nanoparticles are used as reinforcement to form metal-matrix-nano-composite (MMNC). In this paper, 6061/A356 nanocomposite castings are fabricated using the ultrasonic stirring technology (UST). The 6061/A356 alloy and Al2O3/SiC nanoparticles are used as the matrix alloy and the reinforcement, respectively. Nanoparticles are injected into the molten metal and dispersed by ultrasonic cavitation and acoustic streaming. The applied UST parameters in the current experiments are used to validate a recently developed multiphase Computational Fluid Dynamics (CFD) model, which is used to model the nanoparticle dispersion during UST processing. The CFD model accounts for turbulent fluid flow, heat transfer and the complex interaction between the molten alloy and nanoparticles using the ANSYS Fluent Dense Discrete Phase Model (DDPM). The modeling study includes the effects of ultrasonic probe location and the initial location where the nanoparticles are injected into the molten alloy. The microstructure, mechanical behavior and mechanical properties of the nanocomposite castings have been also investigated in detail. The current experimental results show that the tensile strength and elongation of the as-cast nanocomposite samples (6061/A356 alloy reinforced by Al2O3 or SiC nanoparticles) are improved. The addition of the Al2O3 or SiC nanoparticles in 6061/A356 alloy matrix changes the fracture mechanism from brittle dominated to ductile dominated.

Download or read book Experimental and Theoretical Investigation of Ultrasonic Cavitation Processing of Al based Alloys and Nanocomposites written by Yang Xuan and published by . This book was released on 2018 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasonic Treatment (UST) is one of the most promising manufacturing methods to refine the microstructure of casting alloys by transforming the morphology of the grains from dendritic to globular, decreasing the grain size, and modifying the precipitates. The applied temperature and/or temperature range during the ultrasonic and solidification processing are the key parameters that will influence the grain refinement. In this study, the effects of the temperature and/or temperature range applied during the ultrasonic and solidification processing on the microstructure and nano-particles distribution of the metal-matrix-nano-composites (MMNCs) have been investigated in detail. Aluminum alloy A356 and Al2O3/SiC nano-particles are used as the matrix alloy and the reinforcement, respectively. UST is applied during the solidification of the molten alloy. Experimental results indicated that the application of UST during solidification has positive effects on the microstructure of the as-cast ingots. Different UST application temperature/temperature range causes different refinement results. Moreover, the added nanoparticles refined the microstructure of the ingot section that is located adjacent to the immersed cylindrical face of the probe. Al-Si-Cu alloys have been widely used in the automotive industry. Fe-rich intermetallics are regarded as the most detrimental impurities that diminish the mechanical properties of alloys. In this study, the effect of ultrasound application temperature/temperature range on the pre-dendritic Fe-rich intermetallics (i.e, sludge) has been also investigated. Aluminum alloy A383 is used as the base alloy. Experimental results indicated that by applying UST on the melt highly influences the morphology and distribution of the precipitated Fe-rich intermetallics. Different UST application temperature/temperature range causes different modification and distribution results of the Fe-rich intermetallics. To create various temperature gradients in the laboratory scale ingot, an innovative two-zone furnace -ultrasound system has been set up in this study. A numerical model for simulation of the temperature-output power correlation that was validated by using experimental measurements has been built as well. The specific ultrasonic zone that will strongly affect the ingot microstructure has been identified and the ultrasonic attenuation coefficient of aluminum A356 melt has been determined.

Download or read book Nanocrystalline Materials written by Sie-Chin Tjong and published by Newnes. This book was released on 2013-09-02 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of Nanocrystalline Materials provides updated information on the development and experimental work on the synthesis, properties, and applications of nanocrystalline materials. Nanocrystalline materials with new functionalities show great promise for use in industrial applications — such as reinforcing fillers in novel polymer composites — and substantial progress has been made in the past decade in their synthesis and processing. This book focuses primarily on 1D semiconducting oxides and carbon nanotubes, 2D graphene sheets and 0D nanoparticles (metals and inorganic semiconductors). These materials are synthesized under different compositions, shapes and structures, exhibiting different chemical, physical and mechanical properties from their bulk counterparts. This second edition presents new topics relevant to the fast-paced development of nanoscience and nanotechnology, including the synthesis and application of nanomaterials for drug delivery, energy, printed flash memory, and luminescent materials. With contributions from leading experts, this book describes the fundamental theories and concepts that illustrate the complexity of developing novel nanocrystalline materials, and reviews current knowledge in the synthesis, microstructural characterization, physical and mechanical behavior, and application of nanomaterials. - Investigates the synthesis, characterization, and properties of a large variety of nanocrystalline materials, and their applications in industry - Keeps the prominent challenges in nanomaterials fabrication at the forefront while offering the most up-to-date scientific findings - Written by experts in nanomaterials with academic backgrounds in chemistry, physics, and materials engineering

Download or read book Fundamental Studies on Ultrasonic Cavitation assisted Molten Metal Processing of A356 nanocomposites written by Xiaoda Liu and published by . This book was released on 2013 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The usage of lightweight high-performance components is expected to increase significantly as automotive, military and aerospace industries are required to improve the energy efficiency and the performance of their products. A356, which is much lighter than steel, is an attractive replacement material. Therefore, it is of great interest to enhance its properties. There is strong evidence that the microstructure and mechanical properties can be considerably improved if nanoparticles are used as reinforcement to form metal-matrix-nano-composite (MMNC). Several recent studies revealed that ultrasonic vibration is highly efficient in dispersing nanoparticles into the melt and producing MMNC. In this thesis, a detailed analysis of the microstructure and mechanical properties is provided for an A356 alloy enhanced with Al2O3 and SiC nanoparticles via ultrasonic processing. Each type of the nanoparticles was inserted into the A356 molten metal and dispersed by ultrasonic cavitation and acoustic streaming technology (UST) to avoid agglomeration or coalescence. The results showed that microstructures were greatly refined and with the addition of nanoparticles, tensile strength, yield strength and elongation increased significantly. SEM and EDS analyses were also performed to analyze the dispersion of nanoparticles in the A356 matrix. Since the ultrasonic energy is concentrated in a small region under the ultrasonic probe, it is difficult to ensure proper cavitation and acoustic streaming for efficient dispersion of the nanoparticles (especially in larger UST systems) without to determine the suitable ultrasonic parameters via modeling and simulation. Accordingly, another goal of this thesis was to develop well-controlled UST experiments that can be used in the development and validation of a recently developed UST modeling and simulation tool.

Download or read book Mechanical and Wear Properties of Aluminum Based Nanocomposites Fabricated Through Ultrasonic Assisted Stir Casting written by A. Prasad Reddy and published by . This book was released on 2020 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aluminum alloy AA6061 with 0.004, 0.008, 0.012, and 0.016 volume fractions of silicon carbide (SiCp) nanocomposites were fabricated using a semi-solid stirring assisted ultrasonic cavitation technique. Specimens are tested for morphology, density, mechanical, and wear properties. The density, strength, and microhardness of the nanocomposites increased with the increase of SiCp nano-reinforcement particles in the matrix. The yield strength of the SiCp-reinforced nanocomposites was evaluated by considering various strengthening mechanisms. It is found that the yield strength of the nanocomposites increased by 96 % for 0.004, 172 % for 0.008, 158 % for 0.012, and 206 % for 0.016 volume fractions of SiCp compared to the base alloy. The dislocation mismatch effect and Orowan strengthening effect are found to play a significant role in the SiCp-reinforced AA6061 nanocomposites. The dislocation mismatch effect increased with the reinforcement particles' size reduction in the matrix. The Orowan strengthening effect increased up to 1.56 nm critical size of SiCp, and above that it decreased slightly. The experimental results are compared to predicted results obtained from various analytical models. The experimental results are observed to be in close agreement with the Mirza and Chen model. The wear loss of nanocomposites decreased with an increase in the nano-sized SiCp reinforcement quantity in the matrix. The amount of 0.004, 0.008, 0.012, and 0.016 volume fractions of nano-sized SiCp reinforcement additions to the AA6061 alloy matrix decreases the wear coefficient by 19.23 %, 38.46 %, 57.69 %, and 62.69 %, respectively. The worn surfaces were also analyzed using a scanning electron microscope and energy-dispersive X-rays.

Download or read book Recent Advances in Layered Materials and Structures written by Sarmila Sahoo and published by Springer Nature. This book was released on 2021-02-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides topical information on innovative, structural and functional materials and composites with applications in various engineering fields covering the structure, properties, manufacturing process, and applications of these materials. It covers various topics in layered structures and layered materials. It discusses the latest developments in the materials engineering field. This book will be useful for academicians, researchers, and practitioners working in the fields of materials engineering, layered structures, and composite materials.

Download or read book Metal Nanocomposites for Energy and Environmental Applications written by Swatantra P. Singh and published by Springer Nature. This book was released on 2022-01-11 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on recent developments in metal nanomaterials and nanocomposites for energy and environmental application such as pollution control in water, air, and soil pollution. The chapters incorporate carbon-based, metal-based and metal-organic framework based nanomaterials and nanocomposites for emerging contaminants (pharmaceuticals and microplastics) and other traditional pollutants remediation along with energy storage, sensing of air and water polutents and carbon capture & storage (CCS). This book will be of interest to those in academia and industry involved in energy and environmental science & engineering research.

Download or read book Nanotechnology in the Automotive Industry written by Huaihe Song and published by Elsevier. This book was released on 2022-04-10 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in the Automotive Industry explores how nanotechnology and nanomaterials are used to enhance the performance of materials and devices for automotive application by fabricating nano-alloys, nanocomposites, nano coatings, nanodevices, nanocatalysts and nanosensors. Consisting of 36 chapters in 6 parts, this new volume in the Micro and Nano Technologies series is for materials scientists, nanotechnologists and automotive engineers working with nanotechnology and nanomaterials for automotive applications. Nanotechnology is seen as one of the core technologies for the future automotive industry to sustain competitiveness. The benefits that nanotechnology brings to the automotive sector include stronger and lighter materials for increased safety and reduced fuel consumption, improved engine performance and fuel consumption for gasoline powered vehicles due to nanocatalysts, fuel additives and lubricants, and more. - Discusses various approaches and techniques such as nanoalloys, nanocomposites, nanocoatings, nanodevices, nanocatalysts and nanosensors used in modern vehicles - Presents the challenges and future of automotive materials - Explores how nanotechnology and nanomaterials are used to enhance the performance of materials and devices for automotive applications

Download or read book Nanotechnology for Energy Sustainability written by Baldev Raj and published by John Wiley & Sons. This book was released on 2017-01-27 with total page 1487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieses Referenzwerk in drei handlichen Bänden bietet einen detaillierten Überblick über Anwendungen der Nanotechnologie im Bereich Nachhaltigkeit in der Energieversorgung. Der erste Band dieses klar strukturierten Nachschlagewerks behandelt nach der Einleitung die Themen Energieerzeugung, erneuerbare Energien, Energiespeicherung, Energieverteilung sowie Energieumwandlung und Energy-Harvesting. Im zweiten Band werden auf Nanotechnologie basierte Materialen, Energieeinsparung und -management, technologische und urheberrechtlich relevante Fragen, Märkte und Umweltsanierung erörtert. Der dritte Band wirft einen Blick in die Zukunft, auf technologische Fortschritte und gibt Empfehlungen. Ein wichtiges Handbuch für alle Experten auf diesem Gebiet, von Forschern und Ingenieuren im wissenschaftlichen Bereich bis hin zu Entwicklern in der Industrie.

Download or read book Toughened Composites written by Sri Bandyopadhyay and published by CRC Press. This book was released on 2022-12-09 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers micro and macro aspects of toughened composites covering polymer matrix, metal matrix, ceramic matrix and nanomatrix. It gives the reader understanding of composite fabrication, construction, and lightweight yet high crack resistance performance, macroscopic testing supported by microscopic bonding and debonding features, models of stress transfer, and commercial features of developing cheaper yet high-quality materials. Features: Focuses on micro and macro aspects of toughening methods and principles of composite materials. Includes all types of composites including polymer matrix, metal matrix, ceramic matrix and nanomatrix. Covers corrosion resistance and oxidation resistance as well as solubility resistance. Discusses the use of recycled materials. Provides a good balance of long fibre, short fibre, nanoparticle and particulate modifiers. This book aims at researchers and professionals in materials science, composite materials, fracture mechanics, materials characterization and testing, properties and mechanics, nanomaterials, aerospace and automotive engineering and structural engineering.

Download or read book Aluminum and Magnesium Metal Matrix Nanocomposites written by Lorella Ceschini and published by Springer. This book was released on 2016-10-18 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book looks into the recent advances in the ex-situ production routes and properties of aluminum and magnesium based metal matrix nanocomposites (MMNCs), produced either by liquid or semi-solid state methods. It comprehensively summarizes work done in the last 10 years including the mechanical properties of different matrix/nanoreinforcement systems. The book also addresses future research direction, steps taken and missing developments to achieve the full industrial exploitation of such composites. The content of the book appeals to researchers and industrial practitioners in the area of materials development for metal matrix nanocomposites and its applications.

Download or read book Metal Matrix Composites written by Karl U. Kainer and published by John Wiley & Sons. This book was released on 2006-08-21 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the properties of MMCs can be directly designed "into" the material, they can fulfill all the demands set by design engineers. This book surveys the latest results and development possibilities for MMCs as engineering and functional materials, making it of utmost value to all materials scientists and engineers seeking in-depth background information on the potentials these materials have to offer in research, development and design engineering.

Download or read book Composites Industry Abstracts written by and published by . This book was released on 1996 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: