Download or read book Structure property Relationships of Solid State Additive Manufactured Aluminum Alloy 2219 and Inconel 625 written by Oscar Gabriel Rivera Almeyda and published by . This book was released on 2017 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure property process Relations of Solid state Additively Manufactured Aerospace Aluminum Alloys written by Craig Joseph Taylor Mason and published by . This book was released on 2020 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing processes provide new avenues to additively repair or manufacture complex aerospace components. There has been limited success in additively manufacturing aluminum alloys and aluminum metal matrix composites that are susceptible to hot-cracking. Recently, the development of a transformative solid-state additive manufacturing process, Additive Friction Stir-Deposition (AFS-D), incorporated the benefits of additive manufacturing and severe plastic deformation processes that provided a new path to fabricate fully-dense aluminum alloy and aluminum metal matrix composite structures. In this work, the microstructural evolution and mechanical response of an Al-Cu-Mg metal matrix composite (MMC) containing 20 weight percent Al2O3 and an AA7050 isogrid structure was additively manufactured through the AFS-D process. Microstructural characterization of the tempered and overaged Al-MMC employed optical microscopy, Scanning Electron Microscopy, and Electron Backscatter Diffraction. Additionally, to quantify the mechanical response of the tempered and overaged Al-MMC, quasi-static tensile experiments were conducted in the longitudinal and transverse orientation. Dynamic tensile testing was performed on the tempered and overaged AFS-D Al-Cu-Mg material in the transverse orientation using a Split-Hopkinson pressure bar. The resulting microstructural and mechanical analysis was captured via the internal state variable (ISV) plasticity damage model. The model is consistent with continuum level kinematics, kinetics, and thermodynamics. The following research provides a foundation for rapidly additively manufacture large MMC structures through AFS-D. This study produced a fully dense AA7050 isogrid structure was manufactured without the need for additional alloying elements. Three sections of the component that exhibit differing thermomechanical processing history were evaluated for the resulting microstructure and mechanical response. The microstructural characterization of the as-deposited AA7050 employed TEM, SEM, and EBSD. The as-deposited AA7050 exhibited a refinement of the constituent particles and grains within the microstructure. Additionally, to quantify the mechanical response of the as-deposited AA7050, quasi-static tensile and high rate tensile experiments were conducted. The Internal-State Variable Plasticity model was successfully modified to be able to capture material anisotropy as a function of precipitate free zones and secondary phases size within the grain.

Download or read book Process Structure Property Performance Relationships of Precipitate and Strain Hardened Aluminum Alloys as Processed Through Solid State Additive Manufacturing Process written by Sadie Cole Beck and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing provides alternatives to traditional manufacturing methods. Equipment footprint, energy use, maintenance considerations, component geometries and material selection are all being reconsidered on the rise of additive manufacturing. Aluminum alloys are of particular interest in the additive manufacturing realm because of their strength-to-weight ratio, general availability, and performance in austere environments. However, it s critical that the strengthening mechanisms that make aluminum alloys so desirable are preserved post additive processing. Additive Friction Stir Deposition (AFSD) is a novel additive manufacturing process that utilizes solid-state plastic deformation to create near-net shaped, layered depositions. Because the process is still being developed, the microstructural and mechanical performance of deposited aluminum alloys have not been fully characterized. In this work, the process-structure-property-performance of a precipitate-hardened (AA6061-T6) and strain-hardened (AA5083-H131) aluminum alloy as processed through AFSD, were quantified. A standard post deposition heat treatment (PDHT) was applied to AA6061 AFSD material, an Al-Mg-Si alloy. The as-deposited material exhibited a refined grain structure, reduced tensile strength from the heat treated feedstock, and increased elongation to failure. The PDHT AFSD material exhibited tensile properties characteristic of a T6 temper through the regrowth of strengthening precipitates. The other material of interest, Al-Mg-Mn alloy (AA5083-H131), a strain-hardened alloy, was processed through AFSD using two methods of machine feeding: recycled chip and solid rod. The thermo-mechanical processing of AFSD resulted in an exchange of strengthening mechanisms removing the wrought material of strength from strain-hardening and replacing it with grain boundary strengthening. The monotonic tensile results demonstrated a reduced yield strength and comparable elastic modulus and ultimate tensile strength to the AA5083-H131 wrought control. The fatigue results demonstrated comparable fatigue performance, primarily between the recycled chip feedstock and wrought AA5083-H131. A strength model and a multistage fatigue model were employed to capture the tensile and fatigue performance for AFSD AA5083. Dynamic compression testing was performed using a Split-Hopkinson pressure bar to quantify strain rate dependence. Experiments reveal that the flow stress of AA5083-H131 and AA5083 AFSD are dependent on the strain rate under compression loading. Furthermore, resulting mechanical performance was captured by the internal state variable (ISV) plasticity-damage model.

Download or read book Towards Elucidating the Process structure performance Relationships of Lightweight Structural Alloys written by Benjamin Andrew Rutherford and published by . This book was released on 2020 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing processes have become a leading technology for research innovation. Additive manufacturing offers the capacity to fabricate complex, near net shape components and the possibility to repair existing components. The vast majority of additive processes are fusion-based, relying on melting and solidification, which can lead to poor mechanical performance due to intense thermal gradients leading to solidification cracking and columnar dendritic grain growth. Additive Friction Stir-Deposition (AFS-D) is a novel technique that implements solid-state severe deformation to create depositions additively. As such, the AFS-D process offers potential to fabricate fully dense components with wrought-like mechanical performance and microstructure. Likewise, AFS-D avoids the intense thermal gradients of fusion welding that leads to solidification cracking in lightweight materials in aerospace applications, such as aluminum alloys. In this research, the process-structure-property relationship is quantified by means of microstructure characterization and mechanical evaluation of AFS-D AA6061. To understand the process-structure-property relationships of AFS-D as-deposited AA6061, test specimens in two orthogonal directions, longitudinal and build, were subjected to quasi-static monotonic tension and strain-controlled fatigue testing. Microstructural evaluation revealed the refinement of constituent particles in AFS-D AA6061, in addition to dynamic recrystallization and grain refinement. Mechanical results indicated homogeneous strength between the two directions investigated at a similar strength to wrought AA6061-O, and fatigue performance similar to the wrought in the longitudinal direction. Microstructural examination of a standard heat treatment for the T6 temper of AA6061 on AFS-D AA6061 was conducted. This led to mechanical performance superior in strength to the control wrought AA6061-T651 in monotonic tension tests, and similar fatigue performance to the as-deposited AFS-D AA6061 and wrought AA6061. Fractography revealed an evolution in the deformation behavior for post deposition heat treated AFS-D AA6061 compared to the as-deposited specimens. Lastly, the mean strain effects of heat treated AFS-D AA6061 and a lightweight rolled aerospace aluminum alloy, AA2099-T83, are quantified and captured in this work. The tensile stable cycle mean stress proved detrimental to the fatigue performance of aluminum alloys. A modified strain-based Morrow model is proposed in this work that successfully captures the effect of tensile mean strain loading conditions on these aluminum alloys.

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 Fundamental Characterization of the Additive Friction Stir deposition Process Via Two Commercial Aluminum Alloys written by Brandon James Phillips and published by . This book was released on 2021 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing is a rapidly growing industry with numerous technologies to suit a variety of applications. However, each application has its own inherent flaws and niches. Aluminum alloys are difficult for the more popular fusion-based additive manufacturing techniques due to the intense thermal gradients generating distortion and selective vaporization of alloying elements. To subjugate some of the issues, the solid-state Additive Friction Stir-Deposition (AFS-D) method was proposed to produce high quality, defect free aluminum deposits. This work investigates the process-structure-property relationships of two popular commercial aluminum alloys employed extensively by consumer, transportation, and defense industries. The first work on process-deformation characteristics of AA6061 were evaluated by producing microhardness profiles taken from the cross-section of builds to produce relationships between mechanical characteristics and machine parameters. Resulting average hardness values were plotted against the processing window and used to determine comparative samples for microstructural analysis. Electron backscatter diffraction and transmission electron microscopy was conducted to characterize the microstructural evolution of depositions. This study provides a succinct, multiscale characterization of as-deposited AFS-D AA6061 to expound the effect of the high-shear solid-state AM process. The subsequent investigation on AA6061 is the first investigation of the process-structure-property relationships of AFS-D in an overlapping, parallel raster deposit. In particular, the deposit produced in this work explores the influence of severe plastic deformation on the as-deposited microstructure and tensile response of material that overlaps in parallel layers at the outer edge of the tool. This study sought to determine the viability of producing large scale structural components larger than the track-width of the AFS-D tool. The final study quantifies the microstructural evolution and consequential tensile response of AA5083. A brief examination of the effect of AFS-D processing parameters was undertaken to determine preferential processing conditions for a larger, free-standing AA5083 structure. Optical and scanning electron microscopy evaluate the microstructural evolution of particles and grain morphology. Tensile properties were evaluated in the longitudinal and vertical build directions, and subsequent fractography discovered the influence of lubrication on the variable mechanical response.

Download or read book Additive Manufacturing Volume 2 written by Prashanth Konda Gokuldoss and published by MDPI. This book was released on 2020-04-15 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing (AM) is one of the manufacturing processes that warrants the attention of industrialists, researchers and scientists, because of its ability to produce materials with a complex shape without theoretical restrictions and with added functionalities. There are several advantages to employing additive manufacturing as the primary additive manufacturing process. However, there exist several challenges that need to be addressed systematically. A couple such issues are alloy design and process development. Traditionally alloys designed for conventional cast/powder metallurgical processes were fabricated using advanced AM processes. This is the wrong approach considering that the alloys should be coined based on the process characteristics and meta-stable nature of the process. Hence, we must focus on alloy design and development for AM that suits the AM processes. The AM processes, however, improve almost every day, either in terms of processing capabilities or processing conditions. Hence, the processing part warrants a section that is devoted to these advancements and innovations. Accordingly, the present Special Issue (book) focuses on two aspects of alloy development and process innovations. Here, 45 articles are presented covering different AM processes including selective laser melting, electron beam melting, laser cladding, direct metal laser sintering, ultrasonic consolidation, wire arc additive manufacturing, and hybrid manufacturing. I believe that this Special Issue bears is vital to the field of AM and will be a valuable addition.

Download or read book Tribocorrosion written by Anna Igual Munoz and published by Springer Nature. This book was released on 2020-06-16 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a toolbox for identifying and addressing tribocorrosion situations from an engineering point of view. It is an accessible and introductory guideline to the emerging and interdisciplinary field of tribocorrosion covering the main concepts of tribology and corrosion. It describes specific tribocorrosion concepts, models and experimental techniques as well as their application to practical situations in which mechanical and chemical phenomena act simultaneously.

Download or read book Additive Manufacturing written by Amit Bandyopadhyay and published by CRC Press. This book was released on 2015-09-08 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of additive manufacturing has seen explosive growth in recent years due largely in part to renewed interest from the manufacturing sector. Conceptually, additive manufacturing, or industrial 3D printing, is a way to build parts without using any part-specific tooling or dies from the computer-aided design (CAD) file of the part. Today, mo

Download or read book Transactions on Intelligent Welding Manufacturing written by Shanben Chen and published by Springer. This book was released on 2017-08-01 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary aim of this volume is to provide researchers and engineers from both academia and industry with up-to-date coverage of recent advances in the fields of robotic welding, intelligent systems and automation. It gathers selected papers from the 2017 International Workshop on Intelligentized Welding Manufacturing (IWIWM’2017), held June 23-26, 2017 in Shanghai, China. The contributions reveal how intelligentized welding manufacturing (IWM) is becoming an inescapable trend, just as intelligentized robotic welding is becoming a key technology. The volume is divided into four main parts: Intelligent Techniques for Robotic Welding, Sensing in Arc Welding Processing, Modeling and Intelligent Control of Welding Processing, and Intelligent Control and its Applications in Engineering.

Download or read book TMS 2020 149th Annual Meeting Exhibition Supplemental Proceedings written by The Minerals, Metals & Materials Society and published by Springer Nature. This book was released on 2020-02-13 with total page 2046 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection presents papers from the 149th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.

Download or read book Nondestructive Characterization of Materials II written by Jean F. Bussière and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possibility of nondestructively characterizing the microstruc ture, morphology or mechanical properties of materials is certainly a fascinating subject. In principle, such techniques can be used at all stages of a material's life - from the early stages of processing, to the end of a structural component's useful life. Interest in the subject thus arises not only from a purely scientific point of view but is also strongly motivated by economic pressures to improve productivity and quality in manufacturing, to insure the reliability and extend the life of existing structures. The present volume represents the edited papers presented at the Second International Symposium on the Nondestructive Characterization of Materials, held in Montreal, Canada, July 21-23, 1986. The Proceedings are divided into eight sections, which reflect the multidisciplinary nature of characterizing materials nondestructively: Polymers and Composites, Ceramics and Powder Metallurgy, Metals, Layered Structures/Adhesive Bonds/Welding, Degradation/Aging, Texture/ Anisotropy, Stress, and New Techniques. Invited papers by R. Hadcock of Grumman Aircraft Systems, R. Cannon of Rutgers University, H. Yada of Nippon Steel and R. Bridenbaugh of Alcoa review respectively the processing of polymer matrix composites, ceramics, steel and aluminum, emphasizing the need for material property sensors to improve process and quality control. Two other invited papers, one by A. Wedgwood of Harwell and the other by P. Holler of the IzFP in Saarbrucken review state of the art techniques to characterize particulate matter and metals respectively.

Download or read book Atlas of Fatigue Curves written by Howard E. Boyer and published by ASM International. This book was released on 1985-12-31 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains more than 500 fatigue curves for industrial ferrous and nonferrous alloys. Also includes an explanation of fatigue testing and interpretation of test results. Each curve is presented independently and includes an explanation of its particular importance.

Download or read book Engineering Materials and Processes Desk Reference written by Michael F. Ashby and published by Butterworth-Heinemann. This book was released on 2009-01-06 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: A one-stop desk reference, for engineers involved in the use of engineered materials across engineering and electronics, this book will not gather dust on the shelf. It brings together the essential professional reference content from leading international contributors in the field. Material ranges from basic to advanced topics, including materials and process selection and explanations of properties of metals, ceramics, plastics and composites. - A hard-working desk reference, providing all the essential material needed by engineers on a day-to-day basis - Fundamentals, key techniques, engineering best practice and rules-of-thumb together in one quick-reference sourcebook - Definitive content by the leading authors in the field, including Michael Ashby, Robert Messler, Rajiv Asthana and R.J. Crawford

Download or read book Materials and Processes written by Barrie D. Dunn and published by Springer. This book was released on 2015-12-29 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to assist scientists and engineers select the ideal material or manufacturing process for particular applications; these could cover a wide range of fields, from light-weight structures to electronic hardware. The book will help in problem solving as it also presents more than 100 case studies and failure investigations from the space sector that can, by analogy, be applied to other industries. Difficult-to-find material data is included for reference. The sciences of metallic (primarily) and organic materials presented throughout the book demonstrate how they can be applied as an integral part of spacecraft product assurance schemes, which involve quality, material and processes evaluations, and the selection of mechanical and component parts. In this successor edition, which has been revised and updated, engineering problems associated with critical spacecraft hardware and the space environment are highlighted by over 500 illustrations including micrographs and fractographs. Space hardware captured by astronauts and returned to Earth from long durations in space are examined. Information detailed in the Handbook is applicable to general terrestrial applications including consumer electronics as well as high reliability systems associated with aeronautics, medical equipment and ground transportation. This Handbook is also directed to those involved in maximizing the relia bility of new materials and processes for space technology and space engineering. It will be invaluable to engineers concerned with the construction of advanced structures or mechanical and electronic sub-systems.

Download or read book Crystallographic Texture of Materials written by Satyam Suwas and published by Springer. This book was released on 2016-09-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a comprehensive and invaluable overview of the basics of crystallographic textures and their industrial applications, this book covers a broad range of both structural and functional materials. It introduces the existing methods of representation in an accessible manner and presents a thorough overview of existing knowledge on texture of metallic materials. Texture analysis has widespread use in many industries, and provides crucial input towards the development of new materials and products. There has been rapid growth in the science and art of texture analysis in the last few decades. Other topics addressed within this book include recent research on texture in thin films and non-metals, and the dependence of material properties on texture, and texture control in some engineering materials. This book constitutes an invaluable reference text for researchers and professionals working on texture analysis in metallurgy, materials science and engineering, physics and geology. By using content selectively, it is also highly accessible to undergraduate students.

Download or read book Metal Additive Manufacturing written by Dyuti Sarker and published by John Wiley & Sons. This book was released on 2021-10-26 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: METAL ADDITIVE MANUFACTURING A comprehensive review of additive manufacturing processes for metallic structures Additive Manufacturing (AM)—also commonly referred to as 3D printing—builds three-dimensional objects by adding materials layer by layer. Recent years have seen unprecedented investment in additive manufacturing research and development by governments and corporations worldwide. This technology has the potential to replace many conventional manufacturing processes, enable the development of new industry practices, and transform the entire manufacturing enterprise. Metal Additive Manufacturing provides an up-to-date review of all essential physics of metal additive manufacturing techniques with emphasis on both laser-based and non-laser-based additive manufacturing processes. This comprehensive volume covers fundamental processes and equipment, governing physics and modelling, design and topology optimization, and more. The text adresses introductory, intermediate, and advanced topics ranging from basic additive manufacturing process classification to practical and material design aspects of additive manufacturability. Written by a panel of expert authors in the field, this authoritative resource: Provides a thorough analysis of AM processes and their theoretical foundations Explains the classification, advantages, and applications of AM processes Describes the equipment required for different AM processes for metallic structures, including laser technologies, positioning devices, feeder and spreader mechanisms, and CAD software Discusses the opportunities, challenges, and current and emerging trends within the field Covers practical considerations, including design for AM, safety, quality assurance, automation, and real-time control of AM processes Includes illustrative cases studies and numerous figures and tables Featuring material drawn from the lead author’s research and professional experience on laser additive manufacturing, Metal Additive Manufacturing is an important source for manufacturing professionals, research and development engineers in the additive industry, and students and researchers involved in mechanical, mechatronics, automatic control, and materials engineering and science.