Download or read book The Effect of Processing and Superplastic Deformation on Ambient Ductility of Al 10 Mg 0 1 Zr written by Dimosthenis K. Solomos and published by . This book was released on 1987 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: In previous work, the room temperature mechanical properties of an Al-10Mg-0.1Zr alloy were evaluated after simulated, superplastic forming at a temperature of 300 C (573K). A variation of ductility from 1 to 14% elongation was observed in the room temperature test data. To examine the cause of this variability, the processing schedule was changed to one incorporating more severe reductions during rolling. This resulted in a lesser range of variability in room temperature ductility, but the material no longe behaved superplastically. Elongations at 300 C of only 161% at a maximum were recorded although the small grain size required for good superplasticity apparently was developed. SEM and optical microscopy was then done to investigate the cause of this loss of superplastic behavior. Keywords: Superplasticity, Ductility, Aluminum magnesium, Alloys, thermomechanical, Processing, Aluminum alloys.
Download or read book Naval Research Reviews written by and published by . This book was released on 1984 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Superplasticity written by K Anantha Padmanabhan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second book in a new series - "Materials Research and Engineering" - devoted to the science and technology of materials. "Materials Research and Engineering" evolves from a previous series on "Reine und Allgemeine Metallkunde", which was edited by Werner KBster until his eightieth birthday in 1976. Although the present series is an outgrowth of the earlier one, it should not and cannot be regarded as a continuation. There had to be a shift of scope - and a change in presenta tion as well. Metallurgy is no longer an isolated art and science. Rather, it is linked by its scientific basis and technological implications to non-metallic and composite materials, as well as to processes for production, refining, shaping, surface treatment, and application. Thus, the new series, "Materials Research and Engineering", will present up-to-date information on scientific and technological pro gress, as well as on issues of general relevance within the engineering field and industrial society. Following the general position analysis of materials in the present world as given in volume 1, now volume 2 focuses on a special topic: It provides a thorough treatment of theoretical, experimental, and applied aspects of superplasticity.
Download or read book Retained Ambient Temperature Properties of Superplastically Deformed Al 10 Mg 0 1 Zr Al 10 Mg 0 5 Mn and Al 10 Mg 0 4 Cu Alloys written by Karl A. Klankowski and published by . This book was released on 1985 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The room temperature mechanical properties of three superplastic, high-Magnesium, Aluminum-Magnesium alloys (Al-10%Mg-0.1%Zr, Al-10%Mg-0.5%Mn, Al-10%Mg-0.4%Cu) were evaluated after simulated superplastic forming at warm temperature. The alloys were initially processed to produce superplastic response. They were then deformed at 300 C to stains of 100 to 200 % at strain rates of 1,700 S or 170 S and samples remachined for ambient temperature testing. Results indicate yield strengths of about 276 MPa (40 KSI) are attainable with ductility varying from about 1 to 14 percent elongation at fracture. Ultimate strengths correspondingly vary up to about 517 MPa (75 KSI). Origin of the variability of the ductility is considered.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Download or read book The Influence of Total Strain Strain Rate and Reheating Time During Warm Rolling on the Superplastic Ductility of an Al Mg Zr Alloy written by James E. II. Wise and published by . This book was released on 1987 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of varying three processing variables on the superplastic ductility of an Al-10Mg-0.1Zr alloy was studied. The three variables investigated were: (1) time at temperature during warm rolling; (2) strain rate during rolling (by varying reduction per pass); and (3) total strain. After the material was warm rolled, samples were tension tested at 300 C and at strain rates varying from .0000667/S to .167/S. The greatest superplastic ductilities were achieved in material experiencing the largest total strain, lowest strain rate and most prolonged reheating time during warm rolling. The results are consistent with a model for structure development based on continuous recrystallization. Keywords: Superplastic, Ductility, Total strain, Strain rate, Reheat time, Continuous recrystallization.
Download or read book Alloys Index written by and published by . This book was released on 1988 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Warm Rolling Parameters Temperature and Reheating Time Between Passes on the Superplastic Response of Al Mg Alloys written by George J Kuhnert (Jr) and published by . This book was released on 1988 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of rolling temperature and reheating interval between consecutive rolling passes on the superplastic response of two Al-Mg alloys were investigated. The alloys were Al-8%Mg0.1%Zr and Al-10%Mg-0.1%Zr (wt. pct.). The effects of varying the process parameters were observed on resultant superplastic ductility during testing at 300 C. The data support a model for microstructure evolution during processing by a mechanism of continuous recrystallization (CRX). The model for CRX assumes that dislocations recover to sub boundaries which are stabilized by precipitates, of size on the order of one micron, located at nodes of the substructure. Continuous recrystallization, Superplasticity, Reheating interval rolling temperature. (jes).
Download or read book Superplasticity written by K. A. Padmanabhan and published by Springer. This book was released on 2018-12-08 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines the perspectives of materials science of Superplasticity, on the one hand, and those of design and mechanics, on the other, in order to provide a holistic view of materials, design, mechanics and performance which will lead to useful solutions of societal benefits, in addition to providing great intellectual challenges. After considering the experimental evidence for superplasticity in different classes of materials, the book discusses the physics-based models, along with their advantages and limitations. Then, the analyses for superplastic forming available in the framework of continuum mechanics, finite element analysis and numerical simulations are presented. Finally, the authors highlight some successful industrial applications. This book is recommended as a text book for courses on Superplasticity and as supplementary use for courses on Materials Processing, Manufacturing, High Temperature Deformation, Nanotechnology and Mechanical Behavior of Materials. Persons working in Department of Materials Science and Engineering, Physics, Mechanics, Mechanical Engineering, Aerospace Engineering, Metallurgy, Ceramics and Geo-sciences are likely to find the book to be useful. It is also recommended as a reference source for practicing engineers involved in the design, processing and manufacture of industrial components, which exploit the unique properties associated with superplastic materials.
Download or read book Metals Abstracts written by and published by . This book was released on 1999-04 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superplastic Forming of Advanced Metallic Materials written by G Giuliano and published by Elsevier. This book was released on 2011-06-27 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress associated with welding which makes components ideal for aerospace, automotive and other applications. Superplastic forming of advanced metallic materials summarises key recent research on this important process.Part one reviews types of superplastic metals, standards for superplastic forming, processes and equipment. Part two discusses ways of modelling superplastic forming processes whilst the final part of the book considers applications, including superplastic forming of titanium, aluminium and magnesium alloys.With its distinguished editor and international team of contributors, Superplastic forming of advanced metallic materials is a valuable reference for metallurgists and engineers in such sectors as aerospace and automotive engineering.Note: The Publishers wish to point out an error in the authorship of Chapter 3 which was originally listed as: G. Bernhart, Clément Ader Institute, France. The correct authorship is: G Bernhart, P. Lours, T. Cutard, V. Velay, Ecole des Mines Albi, France and F. Nazaret, Aurock, France. The Publishers apologise to the authors for this error. - Reviews types of superplastic metals and standards for superplastic forming - Discusses the modelling of superplastic forming, including mathematical and finite element modelling - Examines various applications, including superplastic forming of titanium, aluminiun and magnesium alloys
Download or read book Aluminium Alloys 2006 written by Warren J. Poole and published by . This book was released on 2006 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world production of primary and recycled aluminum continues to increase and, over the past twenty years, has risen from ~15 Mt/y in 1985 to ~32 Mt/y in 2005. The main consumers are transportation, beverage and other packaging, and building construction. The global primary aluminum production has been growing by about 2-3% per year. However, growth rates over the last decade have been much higher. In particular, during the past five years, China has played a critical role in aluminum production and has gone through a dramatic period of growth.
Download or read book Superplasticity written by Oskar Akramovich Kaĭbyshev and published by . This book was released on 2005 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The remarkable technology of superplastic forming was developed and perfected in the former Soviet Union. This volume, written by two Russian scientists at the Institute for Metals Superplasticity Problems in Ufa, Bashkortostan, Russia (of which Kaibyshev was the former director), presents a detailed and up-to-date treatment of the technology, with particular attention to the production of ultrafine grain materials, their use in superplastic shaping and forming, practical aspects of the process, and new developments in submicrocrystalline and nanocrystalline materials production. The comprehensive bibliography of the largely Russian literature will be a valuable resource for the serious scientist. Specialists in machine building and metallurgy, as well as graduate students and researchers will be the book's audience. Annotation :2004 Book News, Inc., Portland, OR (booknews.com).
Download or read book Flow Behavior and Microstructural Evolution During Superplastic Deformation of AA8090 Aluminum lithium Alloy written by Wenjie Fan and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Grain Size on Superplastic Deformation of Metallic Materials written by Jayaganthan Rengaswamy and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The superplastic deformation exhibited by metals with different grain sizes and their corresponding deformation mechanism influences the industrial metal-forming processes. The coarse-grained materials, which contain grain size greater than 20¬†Œom, exhibited superplastic deformation at high homologous temperature and low strain rate of the order of 10,àí4¬†s,àí1. Fine grain materials (1,Äì20¬†Œom) are generally considered as favorable for superplastic deformation. They possess high-strain-rate sensitivity ,Äúm,Äù value, approximately, equal to 0.5 at the temperature of 0.5 times the melting point and at a strain rate of 10,àí3 to 10,àí4¬†s,àí1. Ultrafine grains (100¬†nm to less than 1¬†Œom) exhibit superplasticity at high strain rate as well as at low temperature when compared to fine grain materials. It is attributed to the fact that both temperature and strain rates are inversely proportional to the grain size in Arrhenius-type superplastic constitute equation. The superplastic phenomenon with nano-sized grains (10¬†nm to less than 100¬†nm) is quite different from their higher-scale counterparts. It exhibits high ductility with high strength. Materials with mixed grain size distribution (bimodal or layered) are found to exhibit superior superplasticity when compared to the homogeneous grain-sized material. The deformation mechanisms governing these superplastic deformations with different scale grain size microstructures are discussed in this chapter.
