Download or read book Superplastic Forming Diffusion Bonding Technology of Titanium Alloys written by Zhiqiang Li and published by Springer Nature. This book was released on 2023-10-26 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive illustration to the superplastic forming/diffusion bonding (SPF/DB) technology developed over decades of research on titanium alloys, process modeling, and its application. SPF/DB technology plays key roles in building aviation components with complicated structures, with highly beneficial effects when well designed. With the ever-increasing demand on components with multiple layers, there is an urgent need for an updated assessment of traditional and modern SPF/DB processing methods. Success critically depends on making the most practical and effective choice of SPF/DB method for a given application. The book introduces titanium and titanium alloys, SPF/DB processing and its modeling, and applications for building typical single or multiple layer(s) structures. Particular attention is paid to illustrating the microstructure evolution during SPF/DB processes. The information for making technical decisions about optimal choice of measurement and evaluation methods is also given in the book. Each chapter follows a focused and pragmatic format. Fully illustrated throughout, the book presents the state of the art in SPF/DB technology in a manner that makes it useful for engineers to improve the established forming processes and quality of components. This book is an essential reading material for industrial practitioners, academic researchers and postgraduates.

Download or read book Study of the Mechanical Performance of Similar and Dissimilar Titanium Alloy Joints Formed by Diffusion Bonding and Friction Stir Welding written by Neha Kulkarni and published by . This book was released on 2015 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium alloys have turned strategically important in aerospace applications due to their high strength to weight ratio, corrosion resistance, and good strength sustainability at high temperatures. The joining of lightweight materials such as titanium alloys in aerospace industries offer two main benefits of near net shape manufacturing and of reduction in buy to fly ratio. Among the various joining methods, Diffusion Bonding and Friction Stir Welding (FSW) can be combined with superplastic forming, therefore, have been widely accepted technique to join titanium alloys to produce complex sheet structures with reduced weight and fabrication costs compared to mechanically fastened structures. Both the processes are mainly optimized for titanium alloy, Ti-6Al-4V, to produce defect free sheets of it. The other titanium alloys such as Ti-6242 and Ti-54MFG offer advantages of high temperature sustainability and better machinability over Ti-6Al-4V. The joining of titanium alloys with different properties can improve the utilization of titanium alloys and increase the functional properties of joints. However, a very limited research has been conducted on joining techniques with dissimilar titanium alloys. Therefore, the current study examines the processes with dissimilar titanium alloys to broaden the application of the process with titanium alloys. The capability of diffusion bonding process for similar and dissimilar titanium alloys was studied with five titanium alloys, Ti-64SG, Ti-64FG, Ti-6242SG, Ti-54M, and Beta-21S, by maintaining two governing parameters pressure and time constant while the temperature was varied during the formation of joints. The friction stir welding of similar and dissimilar titanium joints was also studied with five titanium alloys, Ti-64SG,Ti-64FG,Ti-6242SG,Ti-6242FG, and Ti-54MFG, by varying two parameters namely, spindle speed and the feed rate, that control the quality of the process. The bond integrity of both the processes was evaluated with metallographic examination and mechanical testing. The surface and subsurface characteristics were examined to evaluate the surface characteristics and bonding strength. The mechanical strength of diffusion-bonded joints was investigated by conducting flexure testing whereas of the friction stir welded joints were examined by performing tensile tests. The probabilistic theoretical model of estimation of bonding time of dissimilar alloys was developed by computing the surface topography at the joint interface. A combined approach of numerical and experimental methodology was used to investigate the mechanical response of different titanium joints. The numerical model was developed to simulate flexural behavior of dissimilar diffusion bonded titanium joints from the material curves of its parent alloys. Similarly tensile behavior of friction stir welded similar titanium alloys for different process conditions was developed to identify the locations of maximum stress and strain in the joints. The numerical results were compared to experimentally determined behavior characteristics of the joints to gage the validity of the modeling approach. It was found that there was good agreement in the numerical and experimental results of the tensile behavior in titanium FSW joints. The diffusion bonding temperatures lower than the ß transus temperature of titanium alloys were identified to obtain sound bonds in similar and dissimilar titanium alloys. The quality of bonding was improved as the bonding temperature was increased. In case of friction stir welding, the optimum values of spindle speed and feed rate for the joints formed by similar titanium alloys were 275 RPM/100 mm min-1, whereas it was 325RPM/125 mm min-1 for the joints formed by dissimilar titanium alloys.

Download or read book Evaluation of Superplastic Forming and Co diffusion Bonding of Ti 6Al 4V Titanium Alloy Expanded Sandwich Structures written by and published by . This book was released on 1981 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First and Second International Symposia on Superplasticity and Superplastic Forming Technology written by David C. Dunand and published by ASM International(OH). This book was released on 2003 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from a November 2001 and an October 2002 symposium examine academic and commercial aspects of recent research in the field. They address a range of metals and alloys as well as novel materials such as composites, sandwiches, and foamed metals. They also deal with innovative topics such as hig

Download or read book Intercentra and Hypapophyses in the Cervical Region of Mosasaurs Lizards and Sphenodon written by Henry Fairfield Osborn and published by . This book was released on 1900 with total page 7 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 Titanium and Titanium Alloys written by Christoph Leyens and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is an excellent reference for materials scientists and engineers needing to gain more knowledge about these engineering materials. Following introductory chapters on the fundamental materials properties of titanium, readers will find comprehensive descriptions of the development, processing and properties of modern titanium alloys. There then follows detailed discussion of the applications of titanium and its alloys in aerospace, medicine, energy and automotive technology.

Download or read book Recrystallization and Related Annealing Phenomena written by F.J. Humphreys and published by Elsevier. This book was released on 2012-12-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The annealing of deformed materials is of both technological importance and scientific interest. The phenomena have been most widely studied in metals, although they occur in all crystalline materials such as the natural deformation of rocks and the processing of technical ceramics. Research is mainly driven by the requirements of industry, and where appropriate, the book discusses the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes.The subjects treated in this book are all active research areas, and form a major part of at least four regular international conference series. However, there have only been two monographs published in recent times on the subject of recrystallization, the latest nearly 20 years ago. Since that time, considerable advances have been made, both in our understanding of the subject and in the techniques available to the researcher.The book covers recovery, recrystallization and grain growth in depth including specific chapters on ordered materials, two-phase alloys, annealing textures and annealing during and after hot working. Also contained are treatments of the deformed state and the structure and mobility of grain boundaries, technologically important examples and a chapter on computer simulation and modelling. The book provides a scientific treatment of the subject for researchers or students in Materials Science, Metallurgy and related disciplines, who require a more detailed coverage than is found in textbooks on physical metallurgy, and a more coherent treatment than will be found in the many conference proceedings and review articles.

Download or read book Superplasticity and Superplastic Forming written by C. Howard Hamilton and published by . This book was released on 1988 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superplastic Flow written by K.A. Padmanabhan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superplasticity is the ability of polycrystalline materials under certain conditions to exhibit extreme tensile elongation in a nearly homogeneous/isotropic manner. Historically, this phenomenon was discovered and systematically studied by metallurgists and physicists. They, along with practising engineers, used materials in the superplastic state for materials forming applications. Metallurgists concluded that they had the necessary information on superplasticity and so theoretical studies focussed mostly on understanding the physical and metallurgi cal properties of superplastic materials. Practical applications, in contrast, were led by empirical approaches, rules of thumb and creative design. It has become clear that mathematical models of superplastic deformation as well as analyses for metal working processes that exploit the superplastic state are not adequate. A systematic approach based on the methods of mechanics of solids is likely to prove useful in improving the situation. The present book aims at the following. 1. Outline briefly the techniques of mechanics of solids, particularly as it applies to strain rate sensitive materials. 2. Assess the present level of investigations on the mechanical behaviour of superplastics. 3. Formulate the main issues and challenges in mechanics ofsuperplasticity. 4. Analyse the mathematical models/constitutive equations for superplastic flow from the viewpoint of mechanics. 5. Review the models of superplastic metal working processes. 6. Indicate with examples new results that may be obtained using the methods of mechanics of solids.

Download or read book Diffusion Bonding of Superplastic A B Titanium Alloy written by M. F. Islam and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superplastic Forming and Diffusion Bonding of Rapidly Solidified Dispersion Strengthened Aluminum Alloys for Elevated Temperature Structural Applicat written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-11-19 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapidly solidified alloys, based upon the Al-Fe-V-Si system and designed for elevated temperature applications, were evaluated for superplasticity and diffusion bonding behavior. Alloys with 8, 16, 27, and 36 volume percent silicide dispersoids were produced; dispersoid condition was varied by rolling at 300, 400, and 500 C (572, 752, and 932 F). Superplastic behavior was evaluated at strain rates from 1 x 10(exp -6)/s to 8.5/s at elevated temperatures. The results indicate that there was a significant increase in elongation at higher strain rates and at temperatures above 600 C (1112 F). However, the exposure of the alloys to temperatures greater than 600 C (1112 F) resulted in the coarsening of the strengthening dispersoid and the degradation of mechanical properties. Diffusion bonding was possible using low gas pressure at temperatures greater than 600 C (1112 F) which also resulted in degraded properties. The bonding of Al-Fe-V-Si alloys to 7475 aluminum alloy was performed at 516 C (960 F) without significant degradation in microstructure. Bond strengths equal to 90 percent that of the base metal shear strength were achieved. The mechanical properties and microstructural characteristics of the alloys were investigated. Ting, E. Y. and Kennedy, J. R. ALUMINUM ALLOYS; DIFFUSION WELDING; DISPERSION STRENGTHENING; DISPERSIONS; FORMING TECHNIQUES; SOLIDIFICATION; SUPERPLASTIC FORMING; SUPERPLASTIC FORMING; SUPERPLASTICITY; DEGRADATION; ELONGATION; MECHANICAL PROPERTIES; MICROSTRUCTURE; SILICIDES; STRAIN RATE...

Download or read book Comprehensive Materials Processing written by and published by Newnes. This book was released on 2014-04-07 with total page 5485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Materials Processing, Thirteen Volume Set provides students and professionals with a one-stop resource consolidating and enhancing the literature of the materials processing and manufacturing universe. It provides authoritative analysis of all processes, technologies, and techniques for converting industrial materials from a raw state into finished parts or products. Assisting scientists and engineers in the selection, design, and use of materials, whether in the lab or in industry, it matches the adaptive complexity of emergent materials and processing technologies. Extensive traditional article-level academic discussion of core theories and applications is supplemented by applied case studies and advanced multimedia features. Coverage encompasses the general categories of solidification, powder, deposition, and deformation processing, and includes discussion on plant and tool design, analysis and characterization of processing techniques, high-temperatures studies, and the influence of process scale on component characteristics and behavior. Authored and reviewed by world-class academic and industrial specialists in each subject field Practical tools such as integrated case studies, user-defined process schemata, and multimedia modeling and functionality Maximizes research efficiency by collating the most important and established information in one place with integrated applets linking to relevant outside sources

Download or read book Diffusion Bonding 2 written by D.J. Stephenson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is currently great interest in the process of diffusion bonding. The main thrust has been in the joining of advanced materials such as superplastic alloys, metal matrix composites and ceramics and, most importantly, to introduce the process into mass-production operations. Diffusion bonding has also led to reduced manufacturing costs and weight savings in conventional materials and developments in hot isostatic pressing have allowed greater design flexibility. Since the first conference on Diffusion Bonding, held at Cranfield in 1987, considerable advances have been made and it was therefore considered appropriate to organise the Second International Conference on Diffusion Bonding which was held at Cranfield Institute of Technology on 28 and 29 March 1990. The meeting provided a forum for the presentation and discussion of recent developments in Diffusion Bonding and was divided into four main subject areas: steel bonding and quality control, diffusion bonding of aluminium alloys, bonding of high temperature materials and general applications. This structure is retained in the proceedings. DAVID STEPHENSON vii CONTENTS v Preface ......................... .

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 Advanced Materials Science Technology in China A Roadmap to 2050 written by Ke Lu and published by Springer Science & Business Media. This book was released on 2010-08-09 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: As one of the eighteen field-specific reports comprising the comprehensive scope of the strategic general report of the Chinese Academy of Sciences, this sub-report addresses long-range planning for developing science and technology in the field of advanced materials science. They each craft a roadmap for their sphere of development to 2050. In their entirety, the general and sub-group reports analyze the evolution and laws governing the development of science and technology, describe the decisive impact of science and technology on the modernization process, predict that the world is on the eve of an impending S&T revolution, and call for China to be fully prepared for this new round of S&T advancement. Based on the detailed study of the demands on S&T innovation in China's modernization, the reports draw a framework for eight basic and strategic systems of socio-economic development with the support of science and technology, work out China's S&T roadmaps for the relevant eight basic and strategic systems in line with China's reality, further detail S&T initiatives of strategic importance to China's modernization, and provide S&T decision-makers with comprehensive consultations for the development of S&T innovation consistent with China's reality. Supported by illustrations and tables of data, the reports provide researchers, government officials and entrepreneurs with guidance concerning research directions, the planning process, and investment. Founded in 1949, the Chinese Academy of Sciences is the nation's highest academic institution in natural sciences. Its major responsibilities are to conduct research in basic and technological sciences, to undertake nationwide integrated surveys on natural resources and ecological environment, to provide the country with scientific data and consultations for government's decision-making, to undertake government-assigned projects with regard to key S&T problems in the process of socio-economic development, to initiate personnel training, and to promote China's high-tech enterprises through its active engagement in these areas.

Download or read book Science Characterization and Technology of Joining and Welding written by Meysam Haghshenas and published by MDPI. This book was released on 2020-05-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the Guest Editor of this Special Issue entitled "Science, Characterization, and Technology of Joining and Welding" of Metals, I am pleased to have this book published by MDPI. Joining, including welding, soldering, brazing, and assembly, is an essential requirement in manufacturing processes and is classified as a secondary manufacturing process. This Special Issue of Metals includes technical and review papers on, but not limited to, different aspects of joining and welding, including welding technologies (i.e., fusion-based welding and solid-state welding), characterization, metallurgy and materials science, quality control, and design and numerical simulation. This Special Issue also includes the joining of different materials, including metal and non-metals (polymers and composites), including 17 peer-reviewed papers from several researchers all around the globe (China, Germany, Brazil, South Koria, Slovakia, USA, Taiwan, Canada, and India). As of this date (April 2020), the papers in this Special Issue have been cited 47 times by other researchers, which I think is an eminent number and shows the high quality of the published papers in this Issue. This Special Issue includes a large diversity of various subjects in the field of joining: laser welding, friction stir welding, diffusion bonding, multipass welding, rotary friction-welding, friction bit joining, adhesive bonding, weldbonding, simulation and experimentation, metal/FRP joints, welding simulation, plasma–TIG coupled arc welding, liquation cracking, soldering, resin bonding, microstructural characteristics, brazing, and friction stir butt and scarf welding. I would like to sincerely thank all the researchers who contributed to this Special Issue for their high-quality research. I also would like to acknowledge Mr. Toliver Guo, Senior Assistant Editor at MDPI, who continuously and tirelessly contributed toward this Special Issue by assisting me with inviting the authors and the follow ups. I think this Special Issue will enhance our knowledge and understanding in the field of joining and assembly. I would like to dedicate this book to my wife, Mehrnoosh, for her continued support and encouragement.