Download or read book Parametric Study on High Speed Friction Stir Welding of Dissimilar Aluminum Alloys written by Gangadhar Bhat Kalyanpur and published by . This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Author's abstract] Friction Stir Welding (FSW) is a new welding technique, invented by The Welding Institute, UK, in 1992. FSW is a solid state welding which includes extruding and forging of the metal by the tool and the material is welded without using the filler material. The technique is being successfully used to join low temperature metals, especially aluminum and its alloys. Increase in the use of Aluminum in automotive, aerospace and other related industries has renewed the interests of weld ability of dissimilar aluminum alloys. At present FSW is widely used to join similar metals. For dissimilar metals, there has been very little research work which has focused on studying the effect of welding parameters on mechanical properties of the welds. In this thesis, aluminum alloys A16061-T6 was welded with Al 7075-0 Bare, A16061-T6 was welded with A12024-T3 and A12024-T3 was welded with Al 7075- 0 Bare and weld parameters, rotational speed and transverse speed of the tool are correlated with the hardness and tensile strength of the welds. The experiment was run according to the design considered using Stat-Ease software and was carried out at high speeds ranging from 12000 rpm to 15000 rpm and transverse speed of 3 inches/min to 7 inches/min. Interactions between the weld parameters and their contribution towards the hardness property of the weld were studied. It was observed that at lower transverse speed i.e. at 3 inches/min the hardness values were higher than at 7 inches/min. It was observed that the hardness value of A17075-0 was increased by 40% due to the grain refinement. The tensile test results showed that the yield strength with respect to A16061-T6 was 75% and with respect to A12024-T3 was 60%.
Download or read book Friction Stir Welding written by Noor Zaman Khan and published by CRC Press. This book was released on 2017-07-28 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of mechanical properties and its characterization is important to the weld quality whose further analysis requires mechanical property and microstructure correlation. Present book addresses the basic understanding of the Friction Stir Welding (FSW) process that includes effect of various process parameters on the quality of welded joints. It discusses about various problems related to the welding of dissimilar aluminium alloys including influence of FSW process parameters on the microstructure and mechanical properties of such alloys. As a case study, effect of important process parameters on joint quality of dissimilar aluminium alloys is included.
Download or read book Friction Stir Welding and Processing written by Rajiv S. Mishra and published by ASM International. This book was released on 2007-01-01 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the rapidly growing area of friction stir welding. It also addresses the use of the technology for other types of materials processing, including superplastic forming, casting modification, and surface treatments. The book has been prepared to serve as the first general reference on friction stir technology,. Information is provided on tools, machines, process modeling, material flow, microstructural development and properties. Materials addressed include aluminum alloys, titanium alloys, steels, nickel-base alloys, and copper alloys. The chapters have been written by the leading experts in this field, representing leading industrial companies and university and government research insititutions.
Download or read book Characterization of High Speed Friction Stir Weld Between Dissimilar Aluminum Alloys written by Jingyi Zhang and published by . This book was released on 2017 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction stir welding (FSW) is a solid-state joining technique that is proven to produce superior joint properties and is particularly helpful in the joining of high-strength aluminum alloys. The historically slower welding speed of FSW (in the range of hundreds of millimeters per minute), among other issues associated with the application of the technique has limited its industrial use to small volume productions. Revolutionary high-speed FSW of aluminum blanks has been developed at Pacific Northwest National Laboratory and satisfactory forming properties were achieved. This work focuses on the characterization of the complex microstructures formed in high-speed FSW butt joints and the correlation between the microstructural features and the mechanical properties of the welds. The effect of increased welding speed was first studied on similar aluminum joints. Materials properties investigated including the tensile strength, fracture toughness, elongation, joint efficiency, microhardness, and corrosion susceptibility. The evolution of the materials properties is found to be related to the welding parameters through the complex physical metallurgy events including materials softening, material mixing and transportation, precipitate reaction, dynamic recrystallization, dynamic recovery, and severe plastic deformation during the friction stir welding process. The formation mechanism was then studied in the joining of dissimilar aluminum alloys AA5182-O and AA6022-T4 with different thicknesses. Local textural analysis and particle analysis aided in the understanding of the material flow patterns and helped in the selection of a fixed location of dissimilar alloys to achieve defect-free joints. The microstructural characterization and analysis methods include transmission electron microscopy, electron diffraction, scanning electron microscopy, optical microscopy, energy-dispersive X-ray spectroscopy, electron backscatter and probability density functions.
Download or read book Friction Stir Welding of 2XXX Aluminum Alloys including Al Li Alloys written by Rajiv S. Mishra and published by Butterworth-Heinemann. This book was released on 2016-10-01 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction Stir Processing of 2XXX Aluminum Alloys including Al-Li Alloys is the latest edition in the Friction Stir Welding and Processing series and examines the application of friction stir welding to high strength 2XXX series alloys, exploring the past and current developments in the field. The book features recent research showing significant benefit in terms of joint efficiency and fatigue performance as a result of friction stir welding. Friction stir welding has demonstrated significant benefits in terms of its potential to reduce cost and increase manufacturing efficiency of industrial products including transportation, particularly the aerospace sector. The 2XXX series aluminum alloys are the premium aluminum alloys used in aerospace. The book includes discussion of the potential future directions for further optimization, and is designed for both practicing engineers and materials scientists, as well as researchers in the field. - Provides comprehensive coverage of friction stir welding of 2XXX series alloys - Discusses the physical metallurgy of the alloys - Includes physical metallurgy-based guidelines for obtaining high joint efficiency - Features illustrated examples of the application of FSW in the aerospace industry
Download or read book Trends In Welding Research written by Stan A. David and published by ASM International. This book was released on 2006-01-01 with total page 1015 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Friction Stir Welding of High Strength 7XXX Aluminum Alloys written by Rajiv S. Mishra and published by Butterworth-Heinemann. This book was released on 2016-06-08 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction Stir Welding of High Strength 7XXX Aluminum Alloys is the latest edition in the Friction Stir series and summarizes the research and application of friction stir welding to high strength 7XXX series alloys, exploring the past and current developments in the field. Friction stir welding has demonstrated significant benefits in terms of its potential to reduce cost and increase manufacturing efficiency of industrial products in transportation, particularly the aerospace sector. The 7XXX series aluminum alloys are the premium aluminum alloys used in aerospace. These alloys are typically not weldable by fusion techniques and considerable effort has been expended to develop friction stir welding parameters. Research in this area has shown significant benefit in terms of joint efficiency and fatigue performance as a result of friction stir welding. The book summarizes those results and includes discussion of the potential future directions for further optimization. - Offers comprehensive coverage of friction stir welding of 7XXX series alloys - Discusses the physical metallurgy of the alloys - Includes physical metallurgy based guidelines for obtaining high joint efficiency - Summarizes the research and application of friction stir welding to high strength 7XXX series alloys, exploring the past and current developments in the field
Download or read book Design of Experiments in Production Engineering written by J. Paulo Davim and published by Springer. This book was released on 2015-11-06 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers design of experiments (DoE) applied in production engineering as a combination of manufacturing technology with applied management science. It presents recent research advances and applications of design experiments in production engineering and the chapters cover metal cutting tools, soft computing for modelling and optmization of machining, waterjet machining of high performance ceramics, among others.
Download or read book Friction Stir Welding of Aluminium Alloys written by Moataz Attallah and published by LAP Lambert Academic Publishing. This book was released on 2011-02 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction Stir Welding (FSW) is known to result in a complex microstructural development, with features that remain unexplained, such as: the formation of the onion rings structure. Moreover, various microstructural factors have been suggested to control the strength in Al-Mg AA5xxx welds, without identifying their relative contribution. Furthermore, the influence of the basemetal microstructural parameters (e.g. grains, intermetallic particles, stored energy) on the microstructure-property development has not been previously investigated. These issues are addressed in the present study.
Download or read book Friction Stir Welding of Dissimilar Alloys and Materials written by Nilesh Kulkarni and published by Butterworth-Heinemann. This book was released on 2015-03-05 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will summarize research work carried out so far on dissimilar metallic material welding using friction stir welding (FSW). Joining of dissimilar alloys and materials are needed in many engineering systems and is considered quite challenging. Research in this area has shown significant benefit in terms of ease of processing, material mixing, and superior mechanical properties such as joint efficiencies. A summary of these results will be discussed along with potential guidelines for designers. - Explains solid phase process and distortion of work piece - Addresses dimensional stability and repeatability - Addresses joint strength - Covers metallurgical properties in the joint area - Covers fine microstructure - Introduces improved materials use (e.g., joining different thicknesses) - Covers decreased fuel consumption in light weight aircraft - Addresses automotive and ship applications
Download or read book Friction Stir Welding and Processing X written by Yuri Hovanski and published by Springer. This book was released on 2019-02-11 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of the recent progress on friction stir technologies including high-temperature applications, industrial applications, dissimilar alloy/materials, lightweight alloys, simulation, control, characterization, and derivative technologies. The volume offers a current look at friction stir welding technology from application to characterization and from modeling to R&D. Contributions document advances in application, controls, and simulation of the friction stir process to aid researchers in seeing the current state-of-the-art.
Download or read book Friction Stir Welding and Processing IX written by Yuri Hovanski and published by Springer. This book was released on 2017-02-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This books presents a current look at friction stir welding technology from application to characterization and from modeling to R&D. It is a compilation of the recent progress relating to friction stir technologies including derivative technologies, high-temperature applications, industrial applications, dissimilar alloy/materials, lightweight alloys, simulation, and characterization. With contributions from leaders and experts in industry and academia, this will be a comprehensive source for the field of Friction Stir Welding and Processing.
Download or read book Friction Stir Welding written by Daniela Lohwasser and published by Elsevier. This book was released on 2009-12-18 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction stir welding (FSW) is a highly important and recently developed joining technology that produces a solid phase bond. It uses a rotating tool to generate frictional heat that causes material of the components to be welded to soften without reaching the melting point and allows the tool to move along the weld line. Plasticized material is transferred from the leading edge to trailing edge of the tool probe, leaving a solid phase bond between the two parts. Friction stir welding: from basics to applications reviews the fundamentals of the process and how it is used in industrial applications.Part one discusses general issues with chapters on topics such as basic process overview, material deformation and joint formation in friction stir welding, inspection and quality control and friction stir welding equipment requirements and machinery descriptions as well as industrial applications of friction stir welding. A chapter giving an outlook on the future of friction stir welding is included in Part one. Part two reviews the variables in friction stir welding including residual stresses in friction stir welding, effects and defects of friction stir welds, modelling thermal properties in friction stir welding and metallurgy and weld performance.With its distinguished editors and international team of contributors, Friction stir welding: from basics to applications is a standard reference for mechanical, welding and materials engineers in the aerospace, automotive, railway, shipbuilding, nuclear and other metal fabrication industries, particularly those that use aluminium alloys. - Provides essential information on topics such as basic process overview, materials deformation and joint formation in friction stir welding - Inspection and quality control and friction stir welding equipment requirements are discussed as well as industrial applications of friction stir welding - Reviews the variables involved in friction stir welding including residual stresses, effects and defects of friction stir welds, modelling thermal properties, metallurgy and weld performance
Download or read book Friction Stir Welding and Processing written by Rajiv Sharan Mishra and published by Springer. This book was released on 2014-08-04 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book lays out the fundamentals of friction stir welding and processing and builds toward practical perspectives. The authors describe the links between the thermo-mechanical aspects and the microstructural evolution and use of these for the development of the friction stir process as a broader metallurgical tool for microstructural modification and manufacturing. The fundamentals behind the practical aspects of tool design, process parameter selection and weld related defects are discussed. Local microstructural refinement has enabled new concepts of superplastic forming and enhanced low temperature forming. The collection of friction stir based technologies is a versatile set of solid state manufacturing tools.
Download or read book Lightweight Materials written by Flake C. Campbell and published by ASM International. This book was released on 2012-01-01 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid State Welding Friction and Friction Stir Welding Processes written by Esther Titilayo Akinlabi and published by Springer Nature. This book was released on 2020-01-06 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents critical information on the principles and operation of friction welding, friction stir welding, and friction stir processing enhanced with many robust illustrations. It explains the application of these technologies and the current research efforts in the field. The authors explain in detail the advantages offered by these welding processes, in particular their ability to join dissimilar materials not possible to weld in the past. Written for graduate students, researchers, and industrial professionals, the book reinforces concepts presented with case studies on the experimental analysis of welding the dissimilar materials of copper and aluminum, and on friction stir processing.
Download or read book Friction Stir Welding Thermal Effects of a Parametric Study on Butt and Lap Welds written by Rajesh Naidu and published by . This book was released on 2006 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis was to develop and validate finite element models of the friction stir welding process for butt and lap welds for specific experimental cases that in effect enhances the predictability of temperature evolution in the joined workpiece. Significant research has been conducted on butt weld thermal process but limited study has been conducted on lap welds. Through examination of several process parameters critical to both weld and lap weld operations insights into process characterization of process parameters could be made. In this study three dimensional finite element heat transfer models using the commercial code LS-DYNA were developed to obtain the temperature distribution in the workpiece for two types of welds, namely butt joints and lap joints. For the lap weld model a step function for thermal conductance between sheets was applied to account for varying contact resistance. The developed finite element models were validated with published experimental data. Parametric studies were performed involving both types of welds including process parameters such as tool travel rate and rotational tool velocity for different aluminium alloys.
