Download or read book Microstructural Evolution of Friction Stir Processed Ti 6Al 4V written by Paul Andrew Pavka and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Friction stir welding has been developed over the past ten years to permit joining of high strength alloys that cannot be fusion welded. More recently friction stir processing (FSP) has been shown to alter the surface microstructure of a material by essentially in situ thermo mechanical processing. In this study we have used FSP to alter the surface microstructure of Ti-6Al-4V. In all trials, the friction stir processing (FSP) applied to the surface of cast +H.I.P. slabs has resulted in changing the coarse lamellae to small equiaxed [alpha] grains that are about 1 in diameter. This process leaves the coarse lamellar microstructure in the bulk of the material. These findings are believed to produce a microstructure that will have better fatigue strength than what was previously available from the cast + H.I.P. coarse microstructure. Orientation imaging microscopy (OIM) of the fine-grained, equiaxed process zone has shown that there is no preferred grain orientation. A new technique for locally measuring yield strength using small, in-situ compressive cylinders (pillars) has been used to determine the strength change between the fine grain and as-cast structure. Pillars made from focused ion beam milling (FIB) have demonstrated that the fine-grained stirred material is about 30% stronger than the as-cast material. Definition of the mechanism that controls the conversion from the lamellar structure to the equiaxed structure is still being developed, but several observations suggest that the -transus has not been exceeded. More work is being done to verify the fatigue strength of the new microstructure, and to develop a better understanding of the mechanism that controls the conversion process. This work is ongoing but the microstructure changes associated with FSP are described in here.
Download or read book The Microstructural Evolution and Constitutive Analysis for a Physical Simulation of Friction Stir Processing of Ti 6Al 4V written by Jason James Livingston and published by . This book was released on 2011 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction stir processing above the [beta]-transus was microstructurally evident by a stir zone composed of 10 - 40um recrystallized [beta]-grains with either a basketweave or lamellar structure and a continuous network of [alpha] at the grain boundary. Moreover, processing below the [beta]-transus provided a dimensionless heat input of Q = 37.5, while processing above the [beta]-transus was Q less than 50, suggesting this dimensionless heat input does not correlate well with the resulting microstructures.
Download or read book Additive Friction Stir Deposition written by Hang Z. Yu and published by Elsevier. This book was released on 2022-07-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Friction Stir Deposition is a comprehensive summary of the state-of-the-art understanding on this emerging solid-state additive manufacturing technology. Sections cover additive friction stir deposition, encompassing advances in processing science, metallurgical science and innovative applications. The book presents a clear description of underlying physical phenomena, shows how the process determines the printing quality, covers resultant microstructure and properties in the as-printed state, highlights its key capabilities and limitations, and explores niche applications in repair, cladding and multi-material 3D printing. Serving as an educational and research guide, this book aims to provide a holistic picture of additive friction stir deposition-based solid-state additive manufacturing as well as a thorough comparison to conventional beam-based metal additive manufacturing, such as powder bed fusion and directed energy deposition. - Provides a clear process description of additive friction stir deposition and highlights key capabilities - Summarizes the current research and application of additive friction stir deposition, including material flow, microstructure evolution, repair and dissimilar material cladding - Discusses future applications and areas of research for this technology
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 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 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 Friction Stir Welding and Processing VII written by Rajiv Mishra and published by Springer. This book was released on 2016-12-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection focuses on all aspects of science and technology related to 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 Casting and Solidification of Light Alloys written by Alexander Vorozhtsov and published by MDPI. This book was released on 2020-12-15 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation of the effect of casting and crystallization on the structure and properties of the resulting light alloys and, in particular, research connected with detailed analysis of the microstructure of light alloys obtained using various external influences of ultrasonic, vibration, magnetic, and mechanical processing on the casting and crystallization are discussed. Research on the study of introduction of additives (modifiers, reinforcers, including nanosized ones, etc.) into the melt during the crystallization process, the technological properties of casting (fluidity, segregation, shrinkage, etc.), the structure and physicomechanical properties of light alloys are also included.
Download or read book Friction Stir Welding of High Temperature Alloys written by Jiye Wang and published by . This book was released on 2012 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Friction stir welding (FSW) of Ti-6Al-4V alloy, nickel-based and iron-based oxide dispersion strengthened (ODS) alloys (MA754 and MA956) has been studied. The main aspects covered include tool evaluation, microstructural evolution, mechanical properties, and correlation between processing, microstructure and mechanical properties. Tool performance study was carried out for Ti-6Al-4V alloy with refractory tools made of W-1.1%La2O3 and two different grades of WC-Co based materials. The results showed that tool degradation can be attributed to mechanical and chemical interaction with processed material. The nature of tool-workpiece interaction was tool material dependent and influenced the resultant microstructure and weld quality in the stirred zone. FSW resulted in refined grain structure in ODS alloys by dynamic recrystallization mechanism. A critical finding was 'strain induced dispersoid agglomeration'. For Ti-6Al-4V alloy, transformed [beta] microstructure formed composed of fine acicular [alpha] phase (~500 nm in thickness). The fine grain structure facilitated globularization during tensile deformation at 625 °C. Mechanical properties were correlated with microstructure in FSW materials. Improved mechanical properties were observed for ODS alloys due to grain refinement. An effort was made to predict room temperature yield strength for MA956 alloy with strengthening contribution analysis. On the other hand, at high temperature, degradation of creep properties was observed in MA754 alloy. Analysis of MA754 alloy with three grain structures (as-received, FSW and post-weld annealed conditions) revealed that the loss in creep strength of FSW MA754 was attributed to refined grain size and agglomerated dispersoid size"--Abstract, leaf iv.
Download or read book Friction Stir Welding and Processing written by Sandeep Rathee and published by John Wiley & Sons. This book was released on 2024-03-25 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: A single source of information on the fundamental concepts and latest research applications of friction stir welding and processing Friction Stir Welding and Processing: Fundamentals to Advancements provides concise yet comprehensive coverage of the field of friction stir welding, with an eye toward future research directions and applications. Throughout the book, case studies provide real-world context and highlight applications for various engineering sectors. With contributions from an array of leaders in the field, Friction Stir Welding and Processing provides readers with a single source of information on all aspects of FSW and FSP. After explaining the fundamentals of friction stir welding (FSW) and its variants, the book discusses composite fabrication techniques using friction stir processing (FSP). Different types of friction techniques are covered, as is the equipment used. Detailed characterization of samples and composites are included. Additional topics discussed include the impact of FSW on the economics of production, methods for coupling FSW/FSP with additive manufacturing, composite fabrication, and process-property relationships. Master the basic concepts of friction stir welding and its variants Discover the role of FSW in developing hybrid manufacturing techniques Follow case studies that connect theoretical concepts to real-world experimental results Learn from contributions from an array of global thought leaders in the field This is a valuable compendium on the topic for engineers and designers who utilize welding and advanced manufacturing across industries, as well as graduate students and post-graduate researchers who are exploring new friction stir welding applications.
Download or read book Advances in Additive Manufacturing and Metal Joining written by N. Ramesh Babu and published by Springer Nature. This book was released on 2023-05-16 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the 8th International and 29th All India Manufacturing Technology, Design and Research Conference (AIMTDR 2021). It discusses the latest advances in miniature manufacturing, machining of miniature components, surface engineering, nanomaterials, nanotechnology, Industry 4.0, optimization techniques, micro-electric discharge machining, electrochemical micro-machining, thin films, optimization of micro-machining process parameters, machining of nano-composites, characterization using atomic force microscopy, micro-tool fabrications, characterization of nano-composites, surface roughness analysis, tribological performance of surface coated materials and sustainability in manufacturing. The contents of this book are useful for students, researchers and as well as industry professionals in the various fields of mechanical engineering.
Download or read book Advances in Friction Stir Welding and Processing written by M.-K. Besharati-Givi and published by Elsevier. This book was released on 2014-12-08 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction-stir welding (FSW) is a solid-state joining process primarily used on aluminum, and is also widely used for joining dissimilar metals such as aluminum, magnesium, copper and ferrous alloys. Recently, a friction-stir processing (FSP) technique based on FSW has been used for microstructural modifications, the homogenized and refined microstructure along with the reduced porosity resulting in improved mechanical properties. Advances in friction-stir welding and processing deals with the processes involved in different metals and polymers, including their microstructural and mechanical properties, wear and corrosion behavior, heat flow, and simulation. The book is structured into ten chapters, covering applications of the technology; tool and welding design; material and heat flow; microstructural evolution; mechanical properties; corrosion behavior and wear properties. Later chapters cover mechanical alloying and FSP as a welding and casting repair technique; optimization and simulation of artificial neural networks; and FSW and FSP of polymers. - Provides studies of the microstructural, mechanical, corrosion and wear properties of friction-stir welded and processed materials - Considers heat generation, heat flow and material flow - Covers simulation of FSW/FSP and use of artificial neural network in FSW/FSP
Download or read book Advanced Joining Processes written by Lucas F. M. da Silva and published by Springer Nature. This book was released on 2020-03-31 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent material science-based and mechanical analysis-based advances in joining processes. It includes all related processes, e.g. friction stir welding, joining by plastic deformation, laser welding, clinch joining, and adhesive bonding, as well as hybrid joints. It gathers selected full-length papers from the 1st Conference on Advanced Joining Processes.
Download or read book Proceedings of Fourth International Conference on Inventive Material Science Applications written by V. Bindhu and published by Springer Nature. This book was released on 2021-10-19 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume is a collection of best selected research papers presented at the 4th International Conference on Inventive Material Science Applications (ICIMA 2021) organized by PPG Institute of Technology, Coimbatore, India during 14 – 15 May 2021. The book includes original research by material science researchers towards developing a compact and efficient functional elements and structures for micro, nano and optoelectronic applications. The book covers important topics like nanomaterials and devices, optoelectronics, sustainable electronic materials, nanocomposites and nanostructures, hybrid electronic materials, medical electronics, computational material science, wearable electronic devices and models, and optical/nano-sensors.
Download or read book Friction Stir Welding and Processing VI written by Rajiv S. Mishra and published by John Wiley & Sons. This book was released on 2011-04-12 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Friction stir welding has seen significant growth in both technology implementation and scientific exploration. This book covers all aspects of friction stir welding and processing, from fundamentals to design and applications. It also includes an update on the current research issues in the field of friction stir welding and a guide for further research.
Download or read book Proceedings of the Symposium of Aeronautical and Aerospace Processes Materials and Industrial Applications written by P. Zambrano-Robledo and published by Springer. This book was released on 2017-10-20 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected contributions to the Symposium of Aeronautical and Aerospace Processes, Materials and Industrial Applications of the XXV International Materials Research Congress (IMRC). Each chapter addresses scientific principles behind processing and production of materials for aerospace/aeronautical applications. The chapter deals with microstructural characterization including composites materials and metals. The second chapter deals with corrosion in aerospace components is a large and expensive problema for aerospace industry. Finally, the last chapter covers modeling and simulation of different processes to evaluate and optimize the forming process. This book is meant to be useful to academics and professionals.
