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Role Of Magnesium Addition On The Occurence Of Incipient Melting In Experimental And Commercial Al Si Cu Alloys And Its Influence On The Alloy Microstructure And Tensile Properties
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Book Synopsis Role of Magnesium Addition on the Occurence of Incipient Melting in Experimental and Commercial Al-Si-Cu Alloys and Its Influence on the Alloy Microstructure and Tensile Properties by : Deyu Yang
Download or read book Role of Magnesium Addition on the Occurence of Incipient Melting in Experimental and Commercial Al-Si-Cu Alloys and Its Influence on the Alloy Microstructure and Tensile Properties written by Deyu Yang and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Magnesium on the Microstructure, Hardness, and Tensile Properties of Zinc Alloys Containing 25 to 40 Percent Aluminum by : L. A. Neumeier
Download or read book Effects of Magnesium on the Microstructure, Hardness, and Tensile Properties of Zinc Alloys Containing 25 to 40 Percent Aluminum written by L. A. Neumeier and published by . This book was released on 1971 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aluminum written by John E. Hatch and published by ASM International. This book was released on 1984-01-01 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive information for the American aluminium industry Collective effort of 53 recognized experts on aluminium and aluminium alloys Joint venture by world renowned authorities-the Aluminium Association Inc. and American Society for Metals. The completely updated source of information on aluminium industry as a whole rather than its individual contributors. this book is an opportunity to gain from The knowledge of the experts working for prestigious companies such as Alcoa, Reynolds Metals Co., Alcan International Ltd., Kaiser Aluminium & Chemical Corp., Martin Marietta Laboratories and Anaconda Aluminium Co. It took four years of diligent work to complete this comprehensive successor to the classic volume, Aluminium, published by ASM in 1967. Contents: Properties of Pure Aluminum Constitution of Alloys Microstructure of Alloys Work Hardening Recovery, Recrystalization and Growth Metallurgy of Heat Treatment and General Principles of Precipitation Hardening Effects of Alloying Elements and Impurities on Properties Corrosion Behaviour Properties of Commercial Casting Alloys Properties of Commercial Wrought Alloys Aluminum Powder and Powder Metallurgy Products.
Book Synopsis Influence of Processing Variables and Aluminum Content on the Microstructure and Mechanical Properties of Cast Mg-Al Alloys by : Blair Edward Carlson
Download or read book Influence of Processing Variables and Aluminum Content on the Microstructure and Mechanical Properties of Cast Mg-Al Alloys written by Blair Edward Carlson and published by . This book was released on 1997 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Occurence of Incipient Melting of Copper Phases in Al-Si-Cu-Mg Alloys by : Yumei Han
Download or read book Occurence of Incipient Melting of Copper Phases in Al-Si-Cu-Mg Alloys written by Yumei Han and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Magnesium Alloys Containing Nickel, Manganese, Lithium, and Aluminium by : J. A. Rowland
Download or read book Experimental Magnesium Alloys Containing Nickel, Manganese, Lithium, and Aluminium written by J. A. Rowland and published by . This book was released on 1956 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of the Microstructure on the Thermal Conductivity of Cast Al-Si-Cu-Mg Alloys by : Raimon Parés Viader
Download or read book Influence of the Microstructure on the Thermal Conductivity of Cast Al-Si-Cu-Mg Alloys written by Raimon Parés Viader and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pure aluminium has a high thermal conductivity, but as alloying elements are added the thermal conductivity decreases. How much it occurs depends on the alloying elements and whether they are present in solid solution, as small precipitates or larger particles. The present work studies the influence of Cu and Mg additions on the thermal conductivity of Sr-modified as-cast and T6-heat treated Al-Si alloys for a wide range of temperatures (30-400 oC). An unmodified Al-Si alloy with no additions was analysed as well so as to investigate the influence of the modification with Sr. Three properties were determined to calculate the thermal conductivity: thermal diffusivity, specific heat and density. Thermal diffusivity measurements were carried out by means of a Laser Flash device. Regarding the Sr-modified Al-Si alloys, the highest thermal conductivity corresponds to the alloy without the addition of other elements in both as-cast and T6 condition. The alloys containing Cu have in general a lower thermal conductivity than the alloys with solely Mg. The presence of Mg has an overall beneficial effect in as-cast conditions for an alloy containing Cu. In contrast, this addition becomes detrimental for a copper-bearing heat-treated alloy in most of the temperature range. With regard to the Sr-modification outcome, it was found that enhances thermal conductivity in as-cast alloys. Nevertheless, its influence after the heat treatment requires a further study. The thermal conductivity increases normally with the temperature and when the T6 heat treatment is applied. This increment is attributable to the purer aluminium matrix obtained as the precipitates form, grow and coarsen.
Book Synopsis Application of Rate-temperature Parameters to Tensile Data for Magnesium Alloys and a Relation Between the Larson-Miller Constant and the Activation Energy by : Charles R. Manning
Download or read book Application of Rate-temperature Parameters to Tensile Data for Magnesium Alloys and a Relation Between the Larson-Miller Constant and the Activation Energy written by Charles R. Manning and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnesium Alloys by : Frank Czerwinski
Download or read book Magnesium Alloys written by Frank Czerwinski and published by BoD – Books on Demand. This book was released on 2014-11-05 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnesium alloys with their unique physical and chemical properties are important candidates for many modern engineering applications. Their density, being the lowest of all structural metals, makes them the primary choice in global attempts aimed at reducing the weight of transportation vehicles. However, magnesium also creates challenges at certain stages of raw alloy melting, fabrication of net-shape components and their service. The first one is caused by very high affinity of magnesium to oxygen, which requires protective atmospheres increasing manufacturing cost and heavily contributing to greenhouse gas emissions. The second challenge relates to very high corrosivity of liquid magnesium towards materials it contacts. This imposes restrictions on the selection of materials used to contain, transfer or process molten magnesium during manufacturing operations. A mixture of unique benefits and serious challenges of magnesium alloys in solid and liquid states described here makes the book very useful for a broad audience of scientists and engineers from academia and industry.
Book Synopsis Creep and Other Properties of Extruded Zinc-30 Percent Aluminum Alloys Containing Magnesium by : L. A. Neumeier
Download or read book Creep and Other Properties of Extruded Zinc-30 Percent Aluminum Alloys Containing Magnesium written by L. A. Neumeier and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnesium Alloys and Technology by : K. U. Kainer
Download or read book Magnesium Alloys and Technology written by K. U. Kainer and published by John Wiley & Sons. This book was released on 2003 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text corresponds to the increased research and development activity in companies and research institutes in order to achieve an improved property profile and better choice of alloy systems. It discusses these development trends and application potential in different fields.
Book Synopsis The Influence of Alloy Composition and Thermo-Mechanical Processing Procedure on Microstructure and Mechanical Properties of High-Magnesium Alloys by : Ralph Brian Johnson
Download or read book The Influence of Alloy Composition and Thermo-Mechanical Processing Procedure on Microstructure and Mechanical Properties of High-Magnesium Alloys written by Ralph Brian Johnson and published by . This book was released on 1980 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was the development of a thermomechanical procedure to process Aluminum-Magnesium alloys and testing effects of alloying additions on these alloys. Magnesium contents of eight and ten weight percent and the alloying effects of copper and manganese were studied. Microstructures and mechanical properties at six warm rolling temperatures located above and below the solvus line of these alloys were examined. Ultimate tensile strengths in excess of 680 MPa (99 KSI) were obtained. Microstructural evidence indicated that the precipitation of the 'beta' intermetallic phase was one of the most important mechanisms in controlling the strength of the alloy. Furthermore, precipitation is so rapid at higher temperatures that it becomes the strongest force within the microstructure and its presence prevents any possible recrystallization of the alloy. However, when the temperature exceeds the solvus temperature for the alloy, recrystallization does occur with large losses in both yield and ultimate tensile strength. (Author).
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1988 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solidification, Growth Mechanisms, and Associated Properties of Al-Si and Magnesium Lightweight Casting Alloys by :
Download or read book Solidification, Growth Mechanisms, and Associated Properties of Al-Si and Magnesium Lightweight Casting Alloys written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Continually rising energy prices have inspired increased interest in weight reduction in the automotive and aerospace industries, opening the door for the widespread use and development of lightweight structural materials. Chief among these materials are cast Al-Si and magnesium-based alloys. Utilization of Al-Si alloys depends on obtaining a modified fibrous microstructure in lieu of the intrinsic flake structure, a process which is incompletely understood. The local solidification conditions, mechanisms, and tensile properties associated with the flake to fiber growth mode transition in Al-Si eutectic alloys are investigated here using bridgman type gradient-zone directional solidification. Resulting microstructures are examined through quantitative image analysis of two-dimensional sections and observation of deep-etched sections showing three-dimensional microstructural features. The transition was found to occur in two stages: an initial stage dominated by in-plane plate breakup and rod formation within the plane of the plate, and a second stage where the onset of out-of-plane silicon rod growth leads to the formation of an irregular fibrous structure. Several microstructural parameters were investigated in an attempt to quantify this transition, and it was found that the particle aspect ratio is effective in objectively identifying the onset and completion velocity of the flake to fiber transition. The appearance of intricate out-of-plane silicon instability formations was investigated by adapting a perturbed-interface stability analysis to the Al-Si system. Measurements of silicon equilibrium shape particles provided an estimate of the anisotropy of the solid Si/liquid Al-Si system and incorporation of this silicon anisotropy into the model was found to improve prediction of the instability length scale. Magnesium alloys share many of the benefits of Al-Si alloys, with the added benefit of a 1/3 lower density and increased machinability. Magnesium castings often contain additions of heavier elements, such as zinc, zirconium, and rare earth elements, which significantly improve high temperature performance. However, additions of these elements can lead to macrosegregational effects in castings, which are detectable by radiographic scans. The effect of these flow-line indications on alloy mechanical properties is not well quantified. An examination of these flow-line indications and their effects on mechanical properties in three magnesium-based casting alloys was performed here in order to determine the best practice for dealing with affected castings. Preliminary results suggest the flow-lines do not measurably impact bulk material properties. Three additional methods of characterizing three-dimensional material structures are also presented: a minimum spanning tree analysis is utilized to quantify local structure in Cu-Zr liquid phase simulations obtained from molecular dynamics; the radial distribution function is applied to directionally solidified Al-Si structures in an attempt to extract local spacing data; and the critical diameter measurement is also defined and applied to irregular eutectic Al-Si structures.
Book Synopsis Extrusion of Aluminium Alloys by : T. Sheppard
Download or read book Extrusion of Aluminium Alloys written by T. Sheppard and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the importance of extruded alloys has increased due to the decline in copper extrusion, increased use in structural applications, environmental impact and reduced energy consumption. There have also been huge technical advances. This text provides comprehensive coverage of the metallurgical, mathematical and practical features of the process.
Book Synopsis Effect of Mg and Cu Additions on Microstructure and Mechanical Properties of Squeeze Casting Al-Si-Cu-Mg Alloy by :
Download or read book Effect of Mg and Cu Additions on Microstructure and Mechanical Properties of Squeeze Casting Al-Si-Cu-Mg Alloy written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstructure and Properties of Cast Ingots of Al-Zn-Mg-Cu Alloys Modified with Sc and Zr by :
Download or read book Microstructure and Properties of Cast Ingots of Al-Zn-Mg-Cu Alloys Modified with Sc and Zr written by and published by . This book was released on 2004 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of combined additions of Sc and Zr on the microstructure and tensile properties of the direct chill (DC) cast ingots of developmental Al-Zn-Mg-Cu alloys has been evaluated in this work. The properties in both the longitudinal and transverse directions of the cast ingots were determined in as-cast and cast plus heat-treated conditions, at room and cryogenic temperatures. Extensive microstructural evaluation was carried out using optical and electron microscopy, including orientation image microscopy by the electron backscatter diffraction technique. The Sc-containing developmental cast alloys showed the tensile properties, which are much better than the properties of any commercial cast Al alloys and are similar or even superior to the properties of 7075-T6 alloy forgings. The microstructural evolution, the strengthening mechanisms, optimum content of the dispersoid-forming elements, and the processing-structure-property correlations are discussed.
