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 Metal Matrix Composites written by T. S. Srivatsan and published by Springer Nature. This book was released on 2022-02-09 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection brings together engineers, scientists, scholars, and entrepreneurs to present their novel and innovative contributions in the domain specific to metal-matrix composites and on aspects specific to processing, characterization, mechanical behavior, measurements, failure behavior, and kinetics governing microstructural influences on failure by fracture. Topics include but are not limited to: • Metals and metal-matrix composites • Nano-metal based composites • Intermetallic-based composites Contributions in the above topics connect to applications in industry-relevant areas: automotive; nuclear and clean energy; aerospace; failure analysis; biomedical and healthcare; and heavy equipment, machinery, and goods.
Download or read book Properties of Metal Matrix Composite of Aluminium 11 8 Silicon Reinforced with Different Particulates written by Thoguluva Raghavan Vijayaram and published by . This book was released on 2006 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: A composite material is a materials system composed of a mixture or combination of two or more micro or macro constituents that differ in form anf chemical composition and which are essentially insoluble in each other. Metal matrix composites are engineered materials composed of an elemental or alloy matrix in which an insoluble second phase reinforcer is embedded and distibuted to achieve some property improvement. Particulate reinforced metal matrix composites constitute a major portion of these advanced materials. Aluminium-silicon alloys, as a matrix material, are characterized by lightweight, good strength-to-weight ratio, ease of fabrication at reasonale cost, high strength at elevated temperature, good thermal conductivity, excellent castability, good weldability, excellent corrosion resistance and wear resistance properties. Application of particulate reinforced composites in the aerospace, automotive, transportation and construction industries depends on the choice of cost affordable factor. In this research work, particulate reinforced metal matrix composites are processed by vortex method, a melt stirring liquid metallurgy technique. Four different particulates namely, graphite, combination of tungsten carbide and aluminium silicate for hybrid composite reinforcement, quartz and titanium carbide are used as second phase reinforcers for reinforcement in the matrix. Aluminium-11.8% silicon alloy is selected as the matrix material and the particulators are mixed in different weight fraction %. Slab composite castings are made by pouring the composite mixture in grey cast, steel and copper permanent-molds. Process parameters like pouring temperature, particulate preheating temperature, impeller blade speed and shape are optimized and composite castings containing different weigth fraction % of particulate are made by permanent-mold casting process. Effects on different weight fraction % addition of particulate on the particulate distribution in aluminium-11.8% silicon alloy composites are studied. The processed particulate reinforced composites are subjected to mechanical tensile testing and the properties are determined for different type of particulate reinforcements in the aluminium-11.8% silicon alloy matrix. Besides, hardness, density, impact strength-charphy, fracture toughness, electrical resistivity, electrical conductivity, thermal diffusivity, thermal conductivity, thermal expansion coefficient measurements are performed by using the appropriate equipments and machines. Metallographic studies of the processed particulate composites are conducted by optical microscopy and photomicrographs are captured at different magnifications to reveal and examine the particulate distribution in the aluminium-11.8% silicon alloy matrix. SEM observation of the fracture surfaces of tensile tested, charpy impact tested specimens are performed to study the fracture mechanics and surface characteristics with the aid of captured SEM fractographs. Interfacial boding features of the processed composites are also analyzed with the help of SEM. Besides, slab castings without particulated addition are made and compared with results based on the properties and microstructural features, particularly for the uniformity of particulate distribution in the aluminium-11.8% silicon alloy base matrix. It is found that the properties of the processed particulate reinforced aluminium-11.8% silicon alloy matrix composites are superior to the cast monolithic aluminium-11.8% silicon alloy based on the above-mentioned properties studies. Photomicrographs of the processed composites based on the metallographic studies have confirmed the uniformity of particulate distribution in the aluminium-11.8% silicon alloy matrix.
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 Simulation and Characterization of Aluminium based Metal Matrix Composite written by Suraya Sulaiman and published by . This book was released on 2011 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research work is concerned with the areas of computer simulation of casting process to investigate the mould filling and solidification characteristics of aluminium-11.8% silicon alloy matrix (LM6 alloy matrix) reinforced at five different weight percentages; 0%, 5%, 10%, 15%, and 20% of titanium carbide (TiC) as particulates. The experimental worksfocused on the cooling curve, microstructural and mechanical properties of composite material. Effects on different weight percentages (wt%) addition of the TiC particulates distribution in LM6 alloy matrix are studied. The simulation software used is AnyCasting. The temperature and time during solidification process for experimental work and simulation are compared.The cylinder composite castinghas been made by pouring the composite mixture in sand and copper permanent metallic moulds. The tensile specimens were then preparedin accordance to ASTM B557 M-94 specifications, hardness specimens were tested using MITUTOYO ATK-600 MODEL machine and microstructure of the fracture surface have done by using Scanning Electron Microscopy (SEM).The outcome of the investigations reveals that the tensile strength and hardness are enhanced from 0wt% to 10wt% of TiCand start to decrease after addition of 10wt%.ofTiC.Good bonding and wettability between the composites ranging from 0%wt. to 10%wt. of TiC influence the close distribution of TiC particles in the LM6 alloy matrix. The addition of 10%wt. to 20%wt. of TiC in LM6 alloy matrix cause the lower resistance and load-bearing capacity and the particle are no longer isolated with the LM6 alloy matrix causing the worse value of tensile strength and hardness.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Degradation of Advanced and Traditional Engineering Materials written by Lloyd H. Hihara and published by CRC Press. This book was released on 2013-10-23 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main, ongoing challenges for any engineering enterprise is that systems are built of materials subject to environmental degradation. Whether working with an airframe, integrated circuit, bridge, prosthetic device, or implantable drug-delivery system, understanding the chemical stability of materials remains a key element in determining their useful life. Environmental Degradation of Advanced and Traditional Engineering Materials is a monumental work for the field, providing comprehensive coverage of the environmental impacts on the full breadth of materials used for engineering infrastructure, buildings, machines, and components. The book discusses fundamental degradation processes and presents examples of degradation under various environmental conditions. Each chapter presents the basic properties of the class of material, followed by detailed characteristics of degradation, guidelines on how to protect against corrosion, and a description of testing procedures. A complete, self-contained industrial reference guide, this valuable resource is designed for students and professionals interested in the development of deterioration-resistant technological systems constructed with metallurgical, polymeric, ceramic, and natural materials.
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 Processing Structure Property Relationships in Metals written by Alessandra Varone and published by MDPI. This book was released on 2019-11-04 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the industrial manufacturing of metals, the achievement of products featuring desired characteristics always requires the control of process parameters in order to obtain a suitable microstructure. The strict relationship among process parameters, microstructure, and mechanical properties is a matter of interest in different areas, such as foundry, plastic forming, sintering, welding, etc., and regards both well-established and innovative processes. Nowadays, circular economy and sustainable technological development are dominant paradigms and impose an optimized use of resources, a lower energetic impact of industrial processes and new tasks for materials and products. In this frame, this Special Issue covers a broad range of research works and contains research and review papers.
Download or read book Silicon Carbide Particulate Reinforced Aluminum Alloys Matrix Composites Fabricated by Squeeze Casting Method written by Adem Onat and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Matrix Composites (MMCs) are now attracting enormous interest, because of their superiority in strength, stiffness, wear resistance, elevated temperature strength or other engineering properties. Parallel to commercialisation, there are research centres throughout the world that are actively researching further development and exploitation of net or near net shape fabrication process. In this book, the production and characterisation of SiC particles reinforced Al alloy matrix composites produced by squeeze casting are investigated. The effects of volume fraction of SiC on microstructure, mechanical properties are examined as well. Also the results of the production of gravity cast matrix alloy, to determine the effect of pressure on microstructure and properties are described in this book.
Download or read book TMS 2013 142nd Annual Meeting and Exhibition written by The Minerals, Metals & Materials Society (TMS) and published by John Wiley & Sons. This book was released on 2013-02-22 with total page 1238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting papers from the 2013 annual meeting of The Minerals, Metals & Materials Society (TMS), this volume covers developments in all aspects of high temperature electrochemistry, from the fundamental to the empirical and from the theoretical to the applied.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Stress strain Fracture and Ductility Behavior of Aluminum Matrix Composites Containing Discontinuous Silicon Carbide Reinforcement written by and published by . This book was released on 1984 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semi Solid Processing of Alloys and Composites XII written by Heinrich Möller and published by Trans Tech Publications Ltd. This book was released on 2012-10-24 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the 12th International Conference on Semi-Solid Processing of Alloys and Composites contain the papers which were presented at the conference, held in Cape Town (South Africa) between the 8th and 11th October 2012. The aim of these international conferences is to provide a forum where the leading researchers, engineers and industrialists in this field can gather in order to share their work and knowledge, and hold lively discussions concerning current fundamental issues in semi-solid metal processing. Volume is indexed by Thomson Reuters CPCI-S (WoS). The contents are divided into 5 distinct sections: Microstructure and Properties; Process Development; Modeling, Simulation and Rheology; Materials Development and Alloy Design and Industrial Applications.
Download or read book Mechanical Properties of Spray Atomized SiC Particle Reinforced Aluminum Titanium Alloys written by and published by . This book was released on 1990 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present study, the elevated temperature mechanical behavior and microstructure of Al-Ti-Silicon carbide particulates SiCp metal matrix composites (MMCs) processed by spray atomization and co deposition were investigated. The elevated temperature mechanical properties of the spray deposited and hot extruded materials were studied following a 100 hour exposure at 250, 350, 450 C; the mechanical properties at room temperature were also determined. The results of the present study show that the elevated temperature yield strength of the spray deposited and extruded materials compared favorably to those of an equivalent alloy made by powder metallurgical materials, were superior to those of the ingot material, but were inferior to those of mechanically alloyed Al-Ti materials. The evolution of the microstructure as a result of the thermal annealing was investigated using X-ray diffraction, TEM, and optical microscopy. The results from X-ray diffractometry studies showed extensive precipitation of the equilibrium Al3Ti phase during thermal exposure. In addition, no interfacial reactions were observed.
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Titanium Matrix Composites written by Shankar Mall and published by CRC Press. This book was released on 2020-01-29 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review and summary of advancements related to mechanical behavior and related mechanics issues of titanium matrix composites (TMCs), a class of high-temperature materials useful in the propulsion and airframe components in advanced aerospace systems. After an introduction to TMCs, different authors review and summarise the advancements related to mechanical behavior and related mechanics issues of TMCs.
