Download or read book Microstructure Formation During Solidification of Metal Matrix Composites written by P. K. Rohatgi and published by . This book was released on 1993-01-01 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solidification Processing of Metal Matrix Composites written by Nikhil Gupta and published by Wiley-TMS. This book was released on 2006-11-10 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Solidification Processing of Metal Matrix Composites" (MMCs) focuses primarily on microcomposites but also covers macrocomposites, nanocomposites and foams. There are four main areas detailed: fundamentals of solidification synthesis, which examines issues related to stir mixing, pressure infiltration, transfer of particles or fibers through gas-liquid and liquid-solid interfaces, and particle/fiber interactions with fluids; processing and microstructures, which focuses on microstructure formation during solidification of MMC under different conditions, such as nucleation, growth, heat transfer, microsegregation, macrosegregation and interactions between solidifying interfaces, particles and fibers; and, properties of solidification processing, covering the relationship between the microstructures and properties. Comparisons are made between properties of solidification processed composites and monolithic and composites made by solid and vapor phase processes. It also details the application of solidification processed MMCs, revealing current and future applications especially in automotive, aerospace, railroad, thermal management, electromechanical machinery and recreational equipment sectors.

Download or read book Microstructure Formation During Solidification of Metal Matrix Composites written by P. K. Rohatgi and published by Minerals, Metals, & Materials Society. This book was released on 1993 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of papers from Materials Week '92, held in Chicago, USA, November 1992, identifies and defines the fundamental principles of soldification of metal matrix composites. Areas of discussion include nucleation, growth, heat flow, particle pushing, interface stability and segregation during solidification of metal matrix composites.

Download or read book Metal Matrix Composites written by Antonio Contreras Cuevas and published by Springer. This book was released on 2018-10-27 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers several aspects of the synthesis of composites by the pressureless infiltration technique. It describes the methods used to obtain green preforms, such as cold pressed and hot sintering, describing the heating time, load, and time required for pressing the preforms. Additionally, wettability phenomena, which is directly related on infiltration, is extensively described. Wettability process and interfacial reactions are analyzed in many ceramic-metal systems prior to fabricate the composites. A complete description of fabrication processes for Metal Matrix Composites is included. An extensive section on structural, chemical, and mechanical characterization of composites fabricated with aluminum and magnesium alloys as matrices reinforced with titanium carbide (TiC), aluminum nitride (AlN), silicon carbide (SiC) and alumina (Al2O3) is included. Relevant techniques for joining composites, such as welding and brazing are addressed. As well as issues pertaining to the corrosion and wear of composites are discussed as well. Corrosion behavior of some composites exposed to aqueous media was analyzed. Corrosion of composites using TiC and SiC like reinforcement and Al, Ni, and some Al-Cux, Al-Mgx and Al-Cu-Li alloys like matrix is discussed extensively. The structural characterization techniques addressed include: scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), optical microscopy (OM), differential thermal analysis (DTA), high resolution transmission electron microscopy (HRTEM), and thermogravimetry analysis (TGA). Mechanical testing including hardness, elastic modulus, tension tests, and impact tests were used in the characterization of composites. Theoretical models for prediction of some mechanical properties are included too.

Download or read book Casting and Solidification of Light Alloys written by Alexander Vorozhtsov and published by MDPI. This book was released on 2020-12-15 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation of the effect of casting and crystallization on the structure and properties of the resulting light alloys and, in particular, research connected with detailed analysis of the microstructure of light alloys obtained using various external influences of ultrasonic, vibration, magnetic, and mechanical processing on the casting and crystallization are discussed. Research on the study of introduction of additives (modifiers, reinforcers, including nanosized ones, etc.) into the melt during the crystallization process, the technological properties of casting (fluidity, segregation, shrinkage, etc.), the structure and physicomechanical properties of light alloys are also included.

Download or read book Semi Solid Casting of Structural Materials written by Annalisa Pola and published by Trans Tech Publications Ltd. This book was released on 2023-08-24 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special topic volume with invited peer-reviewed papers only

Download or read book Nature and Properties of Semi solid Materials written by Minerals, Metals and Materials Society. Meeting and published by . This book was released on 1992 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely covers the fundamentals of microstructure evolution of materials during the semi-solid state of solidification. Emphasis is placed on the properties of materials during the semi-solid state, and the resulting application considerations based on these special properties.

Download or read book The Solidification Microstructures of Al Si Based Metal Matrix Composites written by Nega Setargew and published by . This book was released on 1995 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semi solid Processing of Alloys written by David H. Kirkwood and published by Springer Science & Business Media. This book was released on 2009-11-27 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semisolid metallurgy (SSM) is now some 37-years-old in terms of time from its conception and ?rst reduction to practice in the laboratory. In the intervening years, there has been a steadily growing body of research on the subject and the beginning of signi?cant industrial applications. The overall ?eld of SSM comprises today a large number of speci?c process routes, almost all of which fall in the category of either “Rheocasting” or Thi- casting.” The former begins with liquid metal and involves agitation during partial solidi?cation followed by forming. The latter begins with solid metal of suitable structure and involves heating to the desired fraction solid and forming. Research over the past 37 years, and particularly over the last decade, has provided a detailed picture of process fundamentals and led to a wide range of speci?c SSM processes and process innovations. Industrial studies and actual p- duction experience are providing a growing picture of the process advantages and limitations. At this time, the conditions for eventual wide adoption of SSM appear favorable, both for nonferrous and ferrous alloys. It must, however, be recognized that major innovations, such as SSM become adopted only slowly by industries where capital costsarehigh,pro?tmarginsaremodest,andfailuretomeetcustomercommitments carries a high penalty.

Download or read book Solidification of Metal Matrix Composites written by P. K. Rohatgi and published by . This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science and Technology of Rapid Solidification and Processing written by M.A. Otooni and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a collection of papers presented at the NATO Advanced Research Workshop (NATO/ARW) on "Science and Technology of Rapid Solidification and Processing", held at Hotel Thayer, West Point Military Academy, New York, N. Y. , during June 21-24, 1994. The workshop was attended by over forty scientists representing several NATO member countries as well as representatives from Japan, China (PRC), Taiwan and India. The purpose of this NATO/ARW conference was to review the major advances made in most recent years in both the theoretical and experimental areas of rapid solidification technology and processing. In accordance with the NATO/ARW format, the agenda for the conference was so arranged to offer in depth presentation of the latest developments in the subject area as well as to encourage follow-up discussions by the participants. There was seven sessions each opened with a lecture by an invited guest speaker. Sessions 1-4, covered two days of the conference and focused mainly on Processing Technologies of Rapid Solidification and Thermodynamic Properties (Practical Applications). Sessions 4-6 concentrated on Thermodynamics of Metastable Alloys, Relaxation, Diffusion, Magnetic and Electric Properties (Fundamentals). Session 6 was devoted to the Structural Characterization of Supercooled Melts, Ultra Fine Polycrystalline Materials (New Innovations and Techniques). There were two equally important aspects of this NATO/ARW conference which must be mentioned. Firstly, this is the first NATO/ARW conference on Science and Technology of Rapid Solidification and Processing held in the United States.

Download or read book Advanced Light Alloys and Composites written by R. Ciach and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: An expert exposition of the structural and mechanical properties of light alloys and composites, bridging the gap between scientists and industrial engineers in its consideration of advanced light materials, their structure, properties, technology and application. Includes basic problems of alloy constitution and phase transformations. The aluminium alloys are the main topic of the book, consideration being given to their properties, casting technology, thermomechanical treatment and structure. Attention is also given to the magnesium alloys, particularly those having rare earth metal constituents. Both commercial titanium alloys and intermetallic compounds are discussed, as are metallic composites. The latest engineering techniques are discussed in both theoretical and practical terms.

Download or read book Solidification Rate Effects in Metal matrix Composites written by Andreas Michael Borchert and published by . This book was released on 1991 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solidification Analysis of Metal Matrix Composites Aluminium 11 8 Silicon Alloy Reinforced with Titanium Carbide Particulates written by Nanang Fatchurrohman and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite is a material system composed of a mixture or combination of two or more constituents that differ in form and chemical composition and which are essentially insoluble in each other. Metal matrix composites (MMC) are engineered materials composed of an elemental or alloy as a matrix in which an insoluble second phase reinforcer is embedded and distributed to achieve property improvement. Application of MMC comprises a broad range in aircraft, automotive, defence technology and astronautics components. The performance during its work life of MMC is determined by the mechanical properties. The mechanical properties of MMC are linked to microconstituents formed and its characteristics. For MMC processed by casting method, the solidification behaviour will determine the type of microconstituents formed and its properties. In this study, casting via vortex mixing method is employed to produce MMC aluminium-11.8% silicon alloy (LM6) reinforced with different volume percentages (0, 5, 10, 15, 20, 25%) of titanium particulates (TiCp) cast using sand and copper moulds. Temperature measurements during cooling and solidification are used as the main source to analyse solidification properties (fraction solid and latent heat generation) using Fourier thermal analysis method. A metallographic study is performed to observe the particulates distribution and microconstituents present. A hardness test is carried out, the results show that 25% volume addition of TiCp cast using copper mould has the best result. This result correspond to the improved microstructure as particulates are well distributed in the matrix which can be seen on the photomicrographs. From the visual observation of photomicrographs, the increment addition of particulates will promote more nucleation sites and grain size is reduced due to faster solidification of casting using copper mould (high heat extraction capacity). For production using sand mould the maximum mean value of hardness 54.38 Rockwell number is reached by addition of 25% volume content TiCp , solidification time (fraction solid equals to 1) at 195 seconds and volumetric latent heat generated 245.63 103kJ/m3. The best result is obtained by fabrication of LM6-TiCp MMC using copper mould (permanent die), the maximum mean value of hardness 76.82 Rockwell number is reached by addition of 25% TiCp volume content, solidification time (fraction equals to 1) at 5 seconds (fastest) and volumetric latent heat generated 100.77 kJ/m3. From the results, it is concluded that casting of LM6-TiCp MMC is successfully achieved using vortex mixing technique and that addition of particulates influence solidification characteristics which in turn affect the properties of the MMC.

Download or read book Thixoforming written by Gerhard Hirt and published by John Wiley & Sons. This book was released on 2009-02-11 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a sound technological overview, while also including the fundamental aspects, this book provides the knowledge needed to master the highly challenging process characteristics for successful application in industrial production. It summarizes the first-hand experience gained from twelve years of collaborative research covering materials science, rheology, casting and forming, control and surface technology as well as the modeling of flow behavior, tool engineering and systems engineering, and thus treats all the vital aspects of this field. For materials scientists, physicists, engineers, and those working in the metal processing industry.

Download or read book Advances in Metal Matrix Composites written by Lorella Ceschini and published by Trans Tech Publications Ltd. This book was released on 2011-02-21 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special topic volume with invited peer reviewed papers only.

Download or read book Solidification written by Jonathan A. Dantzig and published by EPFL Press. This book was released on 2016-11-18 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solidification is one of the oldest processes for producing complex shapes for applications ranging from art to industry, and remains as one of the most important commercial processes for many materials. Since the 1980s, numerous fundamental developments in the understanding of solidification processes and microstructure formation have come from both analytical theories and the application of computational techniques using commonly available powerful computers. This book integrates these developments in a comprehensive volume that also presents and places them in the context of more classical theories. This second edition highlights the key concepts within each chapter to help guide the reader through the most important aspects of the topics. The figures are now in color, in order to improve the visualization of phenomena and concepts. Recent important developments in the field since the first edition was published have also been added. The three-part text is aimed at graduate and professional engineers. The first part, Fundamentals and Macroscale Phenomena, presents the thermodynamics of solutions and then builds on that subject to motivate and describe equilibrium phase diagrams. Transport phenomena are discussed next, focusing on the issues of most importance to liquid-solid phase transformations, then moving on to describing in detail both analytical and numerical approaches to solving such problems. The second part, Microstructure, employs these fundamental concepts for the treatment of nucleation, dendritic growth, microsegregation, eutectic and peritectic solidification, and microstructure competition. This part concludes with a chapter describing the coupling of macro- and microscopic phenomena in microstructure development. The third and final part describes various types of Defects that may occur, with emphasis on porosity, hot tearing and macrosegregation, presented using the modeling tools and microstructure descriptions developed earlier.