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Download or read book Severe Plastic Deformation in Highly Immiscible Copper Alloys: Self-organization written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Arias Beach
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)
Download or read book Self-organization in Immiscible Alloy Systems Under Irradiation and Severe Plastic Deformation written by John Arias Beach and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Terry C. Lowe
Publisher : Springer Science & Business Media
ISBN 13 : 9401140626
Total Pages : 392 pages
Book Rating : 4.4/5 (11 download)
Download or read book Investigations and Applications of Severe Plastic Deformation written by Terry C. Lowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Material processing techniques that employ severe plastic deformation have evolved over the past decade, producing metals, alloys and composites having extraordinary properties. Variants of SPD methods are now capable of creating monolithic materials with submicron and nanocrystalline grain sizes. The resulting novel properties of these materials has led to a growing scientific and commercial interest in them. They offer the promise of bulk nanocrystalline materials for structural; applications, including nanocomposites of lightweight alloys with unprecedented strength. These materials may also enable the use of alternative metal shaping processes, such as high strain rate superplastic forming. Prospective applications for medical, automotive, aerospace and other industries are already under development.
Author :
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (742 download)
Download or read book High Strain Rate Superplastic Behavior of Al-Li-Mg-Cu-Sc Alloy Subjected to Severe Plastic Deformation written by and published by . This book was released on 2003 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ghader Faraji
Publisher : Elsevier
ISBN 13 : 9780128135181
Total Pages : 0 pages
Book Rating : 4.1/5 (351 download)
Download or read book Severe Plastic Deformation written by Ghader Faraji and published by Elsevier. This book was released on 2018-07-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Severe Plastic Deformation: Methods, Processing and Properties examines all severe plastic deformation techniques developed over the past two decades, exploring the appropriate severe plastic deformation method for a particular case. The book offers an overview of these methods, introduces ultrafine-grained and nano-grained metals and methods for various bulk, sheet, tubular and large size samples, reviews effective parameters to make a severe plastic deformation method better, from property (mechanical) and processing (cost, time, load, etc.) viewpoints, discusses mechanical, physical and chemical properties of UFG and NS metals, and concludes with various applications for these methods. Over the last several decades, a large number of severe plastic deformation methods have been developed for processing a wide array of metals for superior properties, making this a timely resource.
Author : Ludvík Kunz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)
Download or read book Mechanical Properties of Copper Processed by Severe Plastic Deformation written by Ludvík Kunz and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Properties of Copper Processed by Severe Plastic Deformation.
Author : Tibor Kvačkaj
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)
Download or read book Effect of Severe Plastic Deformation on the Properties and Structural Developments of High Purity Al and Al-Cu-Mg-Zr Aluminium Alloy written by Tibor Kvačkaj and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Effect of Severe Plastic Deformation on the Properties and Structural Developments of high purity Al and Al-Cu-Mg-Zr Aluminium Alloy.
Author : Guney Guven Yapici
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)
Download or read book Severe Plastic Deformation of Difficult-to-work Alloys written by Guney Guven Yapici and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work aims to reveal the microstructural evolution and post-processing mechanical behavior of difficult-to-work alloys upon severe plastic deformation. Severe plastic deformation is applied using equal channel angular extrusion (ECAE) where billets are pressed through a 90° corner die achieving simple shear deformation. Three different materials are studied in this research, namely Ti-6Al-4V, Ti-6Al-4V reinforced with 10% TiC and AISI 316L stainless steel. Microstructure and mechanical properties of successfully extruded billets were reported using light microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), tension and compression experiments and microhardness measurements. The effects of extrusion conditions (temperature and processing route) on the microstructure and mechanical properties are investigated. The underlying mechanisms responsible for observed mechanical behaviors are explored. It is seen that ECAE shear deformation leads to refinement in ł plates and elimination of prior [beta] boundaries in Ti-6Al-4V. Decreasing extrusion temperature and increasing number of passes decreases [alpha] plate size and grain size. Refined [alpha] grain size leads to a significant increase in tensile and compressive flow stresses at room temperature. Texture produced by ECAE has a pronounced effect on mechanical properties. Specifically it leads to tension/compression asymmetry in flow strengths and strain hardening coefficients may be described by the activation of differing slip systems under tension and compression loading. ECAE of Ti-6Al-4V+10%TiC samples also improved mechanical properties due to ł plate size refinement. Nevertheless, further extrusion passes should be carried out for tailoring reinforcement size and distribution providing optimum strength and ductility. ECAE deformation of AISI 316L stainless steel at high homologous temperatures (0.55 to 0.60 T[subscript]m) results in deformation twinning as an effective deformation mechanism which is attributed to the effect of the high stress levels on the partial dislocation separation. Deformation twinning gives rise to high stress levels during post-processing room temperature tension and compression experiments by providing additional barriers to dislocation motion and decreasing the mean free path of dislocations. The highest tensile flow stress observed in the sample processed at 700°C following one pass route A was on the order of 1200 MPa which is very high for 316L stainless steel. The ultimate goal of this study is to produce stabilized end microstructures with improved mechanical properties and demonstrate the applicability of ECAE on difficult-to-work alloys.
Author : Sean Rogers Agnew
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (49 download)
Download or read book An Assessment of Severe Plastic Deformation for Producing Submicrocrystalline Copper written by Sean Rogers Agnew and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project is a critical assessment of the mechanical properties and structure of metals subjected to severe plastic deformation (SPD) processing. The project focuses on equal channel angular forging and on copper as the model material. Numerous reports have been made that SPD methods are capable of producing metals and alloys with a sub-microcrystalline grain size which have desirable mechanical properties and an unusual grain boundary structure. Although other possibilities were kept in mind, the experiments were conducted with the expectation that traditional metallurgical principles would explain the results. This expectation has been fulfilled. Briefly, the elastic behavior of SPD Cu is modified by texture; the tensile behavior is characterized by saturation and early plastic instability; the fatigue performance is marked by cyclic softening; and the creep behavior is dictated by microstructural instability. The microstructure is indeed very fine, having a cell size of ≈0.25 mum with boundaries which are indistinguishable from the original grain boundaries at first glance. However, through careful TEM examination it was determined that there is a more significant population of low angle boundaries in the SPD material than in an annealed polycrystal. Along with diffusion data obtained from creep experiments, this difference provides an explanation for rapid "grain" growth in terms of existing models of subgrain growth and coalescence. Finally, by using polycrystal plasticity simulations to model the equal channel angular forging process, the condition of simple shear has been verified and an accurate prediction of texture has been achieved.
Download or read book Continuous Severe Plastic Deformation Processing of Aluminum Alloys written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Metals with grain sizes smaller than 1-micrometer have received much attention in the past decade. These materials have been classified as ultra fine grain (UFG) materials (grain sizes in the range of 100 to 1000-nm) and nano-materials (grain size 100-nm) depending on the grain size. This report addresses the production of bulk UFG metals through the use of severe plastic deformation processing, and their subsequent use as stock material for further thermomechanical processing, such as forging. A number of severe plastic deformation (SPD) methods for producing bulk UFG metals have been developed since the early 1990s. The most promising of these processes for producing large size stock that is suitable for forging is the equal channel angular extrusion or pressing (ECAE/P) process. This process involves introducing large shear strain in the work-piece by pushing it through a die that consists of two channels with the same cross-sectional shape that meet at an angle to each other. Since the cross-sections of the two channels are the same, the extruded product can be re-inserted into the entrance channel and pushed again through the die. Repeated extrusion through the ECAE/P die accumulates sufficient strain to breakdown the microstructure and produce ultra fine grain size. It is well known that metals with very fine grain sizes (
Author : Paul J. Fopiano
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (38 download)
Download or read book Plastic Deformation and Annealing of Copper and Its Alloys written by Paul J. Fopiano and published by . This book was released on 1953 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David A. Scott
Publisher : Getty Publications
ISBN 13 : 0892361956
Total Pages : 185 pages
Book Rating : 4.8/5 (923 download)
Download or read book Metallography and Microstructure in Ancient and Historic Metals written by David A. Scott and published by Getty Publications. This book was released on 1992-01-02 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: David A. Scott provides a detailed introduction to the structure and morphology of ancient and historic metallic materials. Much of the scientific research on this important topic has been inaccessible, scattered throughout the international literature, or unpublished; this volume, although not exhaustive in its coverage, fills an important need by assembling much of this information in a single source. Jointly published by the GCI and the J. Paul Getty Museum, the book deals with many practical matters relating to the mounting, preparation, etching, polishing, and microscopy of metallic samples and includes an account of the way in which phase diagrams can be used to assist in structural interpretation. The text is supplemented by an extensive number of microstructural studies carried out in the laboratory on ancient and historic metals. The student beginning the study of metallic materials and the conservation scientist who wishes to carry out structural studies of metallic objects of art will find this publication quite useful.
Author : Ali S. Argon
Publisher : Mit Press
ISBN 13 : 9780262511698
Total Pages : 430 pages
Book Rating : 4.5/5 (116 download)
Download or read book Physics of Strength and Plasticity written by Ali S. Argon and published by Mit Press. This book was released on 2003-02-01 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The title of this book is derived from a graduate course in which Professor Egon Orowan presented to M.I.T. students a clear and simple picture of the basic concepts in crystal plasticity and the mechanics of fracture of materials. Since the publication of his pioneering papers on dislocations and atomic mechanisms of fracture in the early 1930's,Professor Orowan has been one of the principal contributors to the field of physics of plasticity and strength. During the past 10 to 15 years, the perfection of many direct experimental methods has caused a great increase of activity in the elucidation of the effects of dislocations on mechanical and physical properties. Equally intensive activity is taking place in the field of physics and mechanics of fracture processes. Professor Ali Argon felt that the retirement of Professor Orowan from the M.I.T. faculty was an appropriate occasion to take stock of the developments in the immediate past and to produce a needed synthesis of this technologically important field. For this purpose he invited 37 of the world's leading figures in the field to contribute theoretical papers of original work. The 17 papers on the Physics of Plasticity fall into two categories: (1) Individual Dislocations and Basic Deformation Mechanisms, and (2) Hardening Mechanisms and Dislocation Dynamics. The 10 papers on the Physics of Strength concentrate on (1) Cracks and Fracture, and (2) Geology.
Author : T. W. Clyne
Publisher : Cambridge University Press
ISBN 13 : 1108837891
Total Pages : 297 pages
Book Rating : 4.1/5 (88 download)
Download or read book Testing of the Plastic Deformation of Metals written by T. W. Clyne and published by Cambridge University Press. This book was released on 2021-06-10 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover a novel approach to the subject, providing detailed information about established and innovative mechanical testing procedures.
Author :
Publisher :
ISBN 13 :
Total Pages : 2566 pages
Book Rating : 4.3/5 (91 download)
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David A. Scott
Publisher : Getty Publications
ISBN 13 : 9780892366385
Total Pages : 536 pages
Book Rating : 4.3/5 (663 download)
Download or read book Copper and Bronze in Art written by David A. Scott and published by Getty Publications. This book was released on 2002 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a review of 190 years of literature on copper and its alloys. It integrates information on pigments, corrosion and minerals, and discusses environmental conditions, conservation methods, ancient and historical technologies.
Author : J. W. Martin
Publisher : Cambridge University Press
ISBN 13 : 9780521423168
Total Pages : 450 pages
Book Rating : 4.4/5 (231 download)
Download or read book Stability of Microstructure in Metallic Systems written by J. W. Martin and published by Cambridge University Press. This book was released on 1997-03-06 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this textbook, popular amongst students and faculty alike, investigates the various causes of thermodynamic instability in metallic microstructures. Materials theoretically well designed for a particular application may prove inefficient or even useless unless stable under normal working conditions. The authors examine current experimental and theoretical understanding of the kinetics behind structural change in metals. The entire text has been updated in this new edition, and a completely new chapter on highly metastable alloys has been added. The degree to which kinetic stability of the material outweighs its thermodynamic instability is very important, and dictates the useful working life of the material. If the structure is initially produced to an optimum, such changes will degrade the properties of the material. This comprehensive and well-illustrated text, accompanied by ample references, will allow final year undergraduates, graduate students and research workers to investigate in detail the stability of microstructure in metallic systems.
