Download or read book Processing Microstructure and Superplasticity in Al Mg Mn Alloys written by Chris D. Meyer and published by . This book was released on 1991 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Correlation of Processing Microstructure and Superplasticity in an Al MG ZR Alloy written by Peter C. Lyle and published by . This book was released on 1992 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superplasticity in Metals and Ceramics written by T. G. Nieh and published by Cambridge University Press. This book was released on 1997-01-23 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes advances in the field of superplasticity, the ability of certain materials to undergo very large tensile strains. This phenomenon has increasing commercial applications, but also presents a fascinating scientific challenge in attempts to understand the physical mechanisms that underpin it. The authors emphasize the materials aspects of superplasticity. Beginning with a brief history of the phenomenon, they describe the two major types of superplasticity-- fine-structure and internal-stress superplasticity-- and discuss their operative mechanisms. They also present microstructural factors controlling the ductility and fracture in superplastic materials. Observations of superplasticity in metals (including aluminum, magnesium, iron, titanium and nickel), ceramics (including monoliths and composites), intermetallics (including iron, nickel, and titanium base), and laminates are thoroughly described. This is a valuable text for graduate students and researchers in materials science and engineering.
Download or read book Materials Processing Handbook written by Joanna R. Groza and published by CRC Press. This book was released on 2007-03-28 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of materials science and engineering is rapidly evolving into a science of its own. While traditional literature in this area often concentrates primarily on property and structure, the Materials Processing Handbook provides a much needed examination from the materials processing perspective. This unique focus reflects the changing comple
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Processing and Microstructure of a Superplastic 5083 Aluminum Alloy written by Tracy A. Maestas and published by . This book was released on 2002-09 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orientation Imaging Microscopy (OIM) methods were applied to the analysis of the microstructure and microtexture as well as the deformation and failure modes of superplastic AA5083 aluminum alloys. Annealing of a cold-rolled AA5083 material at 450 deg C resulted in the formation of equiaxed grains approximately 7mum-8mum in size. Random grain-to-grain misorientations were consistent with particle-stimulated nucleation of recrystallization during processing for superplasticity. Such as microstructure is necessary for superplasticity but mechanical property data indicated only moderate ductility and failure by cavity formation and linkage. This investigation then employed OIM methods to identify the misorientations of boundaries prone to cavitation and determine the role of such boundaries in failure of these materials during elevated temperature deformation.
Download or read book Materials Processing and Texture written by A. D. Rollett and published by John Wiley & Sons. This book was released on 2008-12-05 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at The 15th International Conference on the Texture of Materials from June 1-5th, 2008 in Pittsburgh, PA. Chapters include: Friction Stir Welding and Processing Texture and Anisotropy in Steels Effects of Magnetic Fields Hexagonal Metals Texture in Materials Design View information on Applications of Texture Analysis: Ceramic Transactions, Volume 201.
Download or read book Superplasticity in Advanced Materials written by José María Cabrera Marrero and published by Materials Research Forum LLC. This book was released on 2023-09-01 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents practical and theoretical works on superplasticity in metals and ceramics, on deformation mechanisms, on processes to obtain large ultrafine-grained structures, on advanced characterization techniques, and on hot deformation of advanced materials. Key papers focus on (1) processing of metallic alloys for achieving exceptional superplastic properties, (2) high-pressure sliding (HPS) processes, (3) in-situ neutron and synchrotron methods, and (4) ultra-severe plastic deformation. Keywords: Superplasticity, Superfunctionality, High-pressure Sliding, High-pressure Torsion, Precise Forming, Numerical Simulation, Aeronautical Parts, Near-unconstrained Superplastic Parts, Low-temperature Superplasticity, Friction Stir Processing, Microstructure Evolution, Corrosion Properties, Duplex Stainless Steel, Grain Boundary Sliding, Laminated Materials, Asymmetric Hot Rolling, Uniaxial Hot Pressing, Diffusion Bonding.
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:
Download or read book Hot Deformation and Processing of Aluminum Alloys written by Hugh J. McQueen and published by CRC Press. This book was released on 2016-04-19 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatise on the hot working of aluminum and its alloys, Hot Deformation and Processing of Aluminum Alloys details the possible microstructural developments that can occur with hot deformation of various alloys, as well as the kind of mechanical properties that can be anticipated. The authors take great care to explain and differenti
Download or read book Superplasticity in a Thermo Mechanically Processed Aluminum 10 2 Mg 0 52 Mn Alloy written by Max E. Mills and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research extended the previous work performed by Becker on the elevated temperature deformation characteristics of an aluminum-10.2% magnesium-0.52% manganese alloy. The alloy was warm rolled at 300 C to 94% reduction. Stress-strain testing was utilized to collect data for stress vs strain rate and ductility vs strain rate, as well as, stress exponents and activation energies. Tensile testing was performed at strain rates at .000139 per sec. and temperatures from 20 C to 425 C. Ductility ranged from 400% at 300 C and 600% at 325 C to 700% at 425 C. The data clearly establishes that the warm rolled alloy is superplastic at temperatures as low as 275 C and may exhibit superplastic elongations (greater than 400%) at strain rates at high as .01 per sec at 325 C. Scanning electron microscope observations indicated little or no void formation at or below 300 C. The high ductilities observed at temperatures above the solvus are the result of grain boundary sliding. Originator-supplied keywords included: Superplasticity, Aluminum, Aluminum alloys, Aluminum-magnesium, Thermo-mechanical processing, Rolling, Warm rolling, Annealing recrystallization, Grain Refinement, Precipitation, Cavitation, Grain boundary sliding, Computer programs, Fortran, Theses.
Download or read book Analysis of Grain Refinement and Superplasticity in Aluminum Magnesium Alloys written by Ahmed Ahmed Abou-Salama and published by . This book was released on 1987 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research had demonstrated superplastic behavior in aluminum-magnesium alloys of high magnesium content to result from deformation processing to an initially non recrystallized condition. Analysis here of those data has demonstrated that such a result may be understood in terms of constitutive equations developed for fine-grained materials and that the constitutive equations are applicable to materials achieving grain boundary misorientations in the range of only 2 to 7 by a process of continuous recrystallization. The constitutive equations provide a basis for analysis of anomalous temperature dependence of the strength and of the activation energy for plastic deformation seen as well in this work. A study of the separate effects of processing variables has lead to a model for continuous recrystallization during deformation processing. This model considers recovery of dislocations to sub-boundaries to be the critical step in this process. Application of this model to development of advanced aluminum alloys for air frame structural applications will result in increased weight savings by such processing methods. Theses Keywords: Superplasticity; Aluminum magnesium alloys; Thermomechanical processing; Microstructural evolution; Continuous recrystallization; Microstructural instability; Grain growth.
Download or read book Superplasticity in Thermomechanically Processed High Magnesium Aluminum Magnesium Alloys written by J. J. Becker and published by . This book was released on 1984 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The elevated temperature deformation characteristics of two thermomechanically processed high magnesium, aluminum-magnesium alloys were investigated. The thermomechanical processing itself included warm rolling at 300 deg C to 94% reduction. Subsequent treatments included annealing after rolling for either one-half hour or ten hours at 300 deg C, or one half hour at 440 deg C. These annealing treatments resulted in varying degrees of recrystallization and grain growth and facilitated examination of the effect of grain size on the superplastic deformation characteristics of these alloys. Tension testing was conducted at strain rates ranging from .000053 to .053 S-1 and temperatures varying from ambient to 300 deg C. Materials in the warm rolled condition exhibited the highest strength at ambient temperature and were generally most superplastic at elevated temperature. An Al 10%Mg-0.5%Mn alloy exhibited elongation of approximately 400% at 300 deg C.
Download or read book Superplasticity in Commercial and Experimental Compositions of Magnesium Alloy Sheet written by Milton M. Tilman and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructure and Properties of Materials written by James Chen-Min Li and published by World Scientific. This book was released on 1996 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume of an advanced textbook on microstructure and properties of materials. (The first volume is on aluminum alloys, nickel-based superalloys, metal matrix composites, polymer matrix composites, ceramics matrix composites, inorganic glasses, superconducting materials and magnetic materials). It covers titanium alloys, titanium aluminides, iron aluminides, iron and steels, iron-based bulk amorphous alloys and nanocrystalline materials.There are many elementary materials science textbooks, but one can find very few advanced texts suitable for graduate school courses. The contributors to this volume are experts in the subject, and hence, together with the first volume, it is a good text for graduate microstructure courses. It is a rich source of design ideas and applications, and will provide a good understanding of how microstructure affects the properties of materials.Chapter 1, on titanium alloys, covers production, thermomechanical processing, microstructure, mechanical properties and applications. Chapter 2, on titanium aluminides, discusses phase stability, bulk and defect properties, deformation mechanisms of single phase materials and polysynthetically twinned crystals, and interfacial structures and energies between phases of different compositions. Chapter 3, on iron aluminides, reviews the physical and mechanical metallurgy of Fe3Al and FeAl, the two important structural intermetallics. Chapter 4, on iron and steels, presents methodology, microstructure at various levels, strength, ductility and strengthening, toughness and toughening, environmental cracking and design against fracture for many different kinds of steels. Chapter 5, on bulk amorphous alloys, covers the critical cooling rate and the effect of composition on glass formation and the accompanying mechanical and magnetic properties of the glasses. Chapter 6, on nanocrystalline materials, describes the preparation from vapor, liquid and solid states, microstructure including grain boundaries and their junctions, stability with respect to grain growth, particulate consolidation while maintaining the nanoscale microstructure, physical, chemical, mechanical, electric, magnetic and optical properties and applications in cutting tools, superplasticity, coatings, transformers, magnetic recordings, catalysis and hydrogen storage.
Download or read book The Effect of Alloy Additions on Superplasticity in Thermomechanically Processed High Magnesium Aluminum Magnesium Alloys written by R. J. Self and published by . This book was released on 1984 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research extends previous thesis work by Becker and Mills, and is concurrent with that of Stengel on the superplastic behavior of warm rolled high-Mg, Al-Mg alloys. In this work, the effect of various alloy additions were investigated. The following Al-Mg alloy compositions were studied: 8% Mg; 8% Mg-0.4% Cu; 8% Mg-0.4% Cu-0.5% Mn; 10% Mg; 10% Mg-0.4% Cu; 10% Mg-0.2% Mn. These materials were solution treated and hot worked at 440 C and then warm rolled at 300 C to 94% reduction. Tensile testing was then conducted for the as-rolled condition. The alloys were tested at temperatures ranging from room temperature to 300 C and at strain rates from .000056/sec to .14/sec. The copper addition has, on the same weight percentage basis, the same effect on superplasticity as does the addition of manganese to the alloy. The addition of small amounts (i.e., approximately 0.2 weight percent) of manganese appears to offer little advantage over the binary compositions in terms of super plasticity.
Download or read book Superplasticity of Alloys Intermetallides and Ceramics written by Oscar A. Kaibyshev and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superplasticity is shown to be a universal phenomenon in materials ranging from metals and intermetallics to ceramics. Superplastic deformation facilitates the production of materials with specifically chosen properties. This is illustrated using the examples of Mg-, Al-, and Ti-based commercial alloys, steels, and superalloys. Some of the strenghts of this book are: the broad range of materials studied, the reduction of scientific results to a form suitable for the practitioner, a profound physical analysis of the phenomenon, a new approach to superplastic treatment as a kind of strain-heat treatment, the presentation of new data on superplastic flow and on production techniques of micro- and submicrocrystalline structures.
