Download or read book Study on the Machinability and Surface Integrity of Ti6Al4V Produced by Selective Laser Melting SLM and Electron Beam Melting EBM Processes written by Samuel Milton and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing (AM) techniques based on powder bed fusion like Selective Laser Melting(SLM) and Electron Beam Melting processes(EBM) are being developed to make fully functional parts mainly in aerospace and medical sectors. There are several advantages of using AM processes like design freedom, reduced process steps, minimal material usage and reduced carbon footprint while producing a component. Nevertheless, the parts are built with near net shape and then finish machined to meet the demands of surface quality and dimensional tolerance.

Download or read book 3D Printing Breakthroughs in Research and Practice written by Management Association, Information Resources and published by IGI Global. This book was released on 2016-10-06 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advancement of modern technology has allowed for impressive developments in manufacturing processes. Out of these developments, 3D printing has emerged as a new method. 3D Printing: Breakthroughs in Research and Practice is a comprehensive reference source for the latest research and advances on 3D printing processes, technologies, and methods. Highlighting emerging perspectives on manufacturing and industrial applications, this book is ideally designed for professionals, practitioners, students, and researchers interested in the latest developments and uses of 3D printing.

Download or read book Achievements and Trends in Material Forming written by Gabriela Vincze and published by Trans Tech Publications Ltd. This book was released on 2022-07-22 with total page 2429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peer-reviewed extended papers selected from the 25th International Conference on Material Forming (ESAFORM 2022) Peer-reviewed extended papers selected from the 25th International Conference on Material Forming (ESAFORM 2022), April 27-29, 2022, Portugal

Download or read book Generation and Detection of Defects in Metallic Parts Fabricated by Selective Laser Melting and Electron Beam Melting and Their Effects on Mechanical Properties written by Haijun Gong and published by . This book was released on 2013 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of Additive Manufacturing (AM) technology to fabricate complex three-dimensional components is one promising direction within the manufacturing industry. This approach is rapidly changing the way designers and engineers create objects with desired shape and structures. Selective Laser Melting (SLM) and Electron Beam Melting (EBM) are two common powder bed fusion processes within AM for fabricating metallic parts. In order to give designers and engineers more insights into employing AM, the quality and long-term behavior of SLM- and EBM-produced parts need to be carefully investigated. Thus, this research project aims to understand how processing parameters affect defect generation and distribution during SLM and EBM processes, to study the morphological features of defects, to identify effective non-destructive method(s) to detect these defects, and to characterize the effect of defects on mechanical properties of SLM- and EBM-produced parts. The study began by generating stochastic defects via adjustment to process parameters from optimal parameters to marginal parameters, in order to correlate the porosity to the marginal parameters. Archimedes method was employed to estimate porosity of SLM- and EBM-produced specimens. After this, by using destructive characterization techniques, the defective specimens were sectioned. The morphology of stochastic defects was investigated based on their contour features on the cross sections. Micro CT was primarily used to evaluate the stochastic defects in the SLM and EBM parts and demonstrate their morphological characteristics and porosity in the single slices and reconstructed models. Finally, tensile and fatigue tests were carried out on Ti-6Al-4V parts with identified porosity. The fracture mechanism was analyzed. This study established a fundamental understanding of defects in parts made by SLM and EBM processes. Porosity was quantitatively correlated to the marginal parameters of SLM and EBM processes. Defects were differentiated based on their morphological properties and features. Micro CT was confirmed to be an effective non-destructive method for evaluating stochastic defects in SLM- and EBM-produced parts. The effects of stochastic defects on Ti-6Al-4V parts were determined based on tensile and fatigue tests. It was found that both microstructure and porosity have an impact on the mechanical properties of SLM- and EBM-produced parts.

Download or read book Titanium in Medical and Dental Applications written by Francis Froes and published by Woodhead Publishing. This book was released on 2018-05-09 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium in Medical and Dental Applications is an essential reference book for those involved in biomedical materials and advanced metals. Written by well-known experts in the field, it covers a broad array of titanium uses, including implants, instruments, devices, the manufacturing processes used to create them, their properties, corrosion resistance and various fabrication approaches. Biomedical titanium materials are a critically important part of biomaterials, especially in cases where non-metallic biomedical materials are not suited to applications, such as the case of load-bearing implants. The book also covers the use of titanium for implants in the medical and dental fields and reviews the use of titanium for medical instruments and devices. - Provides an understanding of the essential and broad applications of Titanium in both the medical and dental industries - Discusses the pathways to manufacturing titanium into critical biomedical and dental devices - Includes insights into further applications within the industry

Download or read book Multiscale Investigation on Surface Integrity and Performance of Metal Parts by Selective Laser Melting written by Chao Li and published by . This book was released on 2018 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selective laser melting (SLM) is a popular metal additive manufacturing process which has drawn a great attention in the past decade. It can make functional metal parts directly from the CAD data in a layer upon layer fashion. As-SLMed parts may have near full density comparable to that made by traditional manufacturing methods, SLM has wide application potentials in tool, aerospace, automotive, biomedical, and energy industries. During the SLM process, the interaction between the moving laser beam and the powder leads to very complex physical phenomena. It includes the absorption and reflection of the laser beam; fast heating-cooling cycles; surface tension, wetting, and de-wetting; complex fluid flow and Marangoni convection in the melt pool. Due to the complexity of laser-powder interaction, a comprehensive study of powder-substrate behavior under different process parameters is highly demanded. In addition, high tensile residual stress and part distortion are considered as two major problems for SLMed parts. To understand the formation mechanism of residual stress and part distortion, an efficient prediction tool is highly desired. However, it is very challenging to predict residual stress and distortion of a practical SLMed part as it often requires millions of laser scan which involves the complex multiscale and multi-physics phenomena. Furthermore, poor surface integrity of a SLMed part is detrimental to functional performance such as fatigue. Therefore, a comprehensive understanding of process-surface integrity-fatigue relationship is of great importance. To reveal the underlying mechanisms in SLM, this research focuses on: (1) A critical assessment on the state-of-the-art of SLM process was performed; (2) A thorough characterization of the geometrical, metallurgical, and mechanical properties of single tracks under a broad range of processing conditions in SLM of IN625 alloy; (3) A comprehensive investigation of microstructural evolution of IN625 alloy from as-SLM to different heat treatment conditions; (4) Two efficient multi-physics predictive tools, i.e., stress-thread and temperature-thread based multiscale modeling approaches, to predict residual stress and part distortion of SLMed practical parts at different scanning strategies via thermal loading subroutine and material states variables; (5) A simulation study to investigate the scalability of layer thickness and heat source dimension in fast predicting the distortion and residual stress; and (6) Conclusions and an outlook of the future research.

Download or read book Proceedings of the 13th World Conference on Titanium written by Vasisht Venkatesh and published by John Wiley & Sons. This book was released on 2016-04-26 with total page 4024 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings of the 13th World Conference on Titanium.

Download or read book Selective Laser Melting written by Prashanth Konda Gokuldoss and published by MDPI. This book was released on 2020-04-03 with total page 98 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. AM has the ability to fabricate materials to produce parts with complex shapes without any theoretical restrictions combined with added functionalities. Selective laser melting (SLM), also known as laser-based powder bed processing (LPBF), is one of the main AM process that can be used to fabricate wide variety of materials that are Al-, Ti-, Fe-, Ni-, Co-, W-, Ag-, and Au-based, etc. However, several challenges need to be addressed systematically, such as development of new materials that suit the SLM process conditions so the process capabilities can be fully used to produce new properties in these materials. Other issues in the field are the lack of microstructure–property correlations, premature failure, etc. Accordingly, this Special Issue (book) focuses mainly on the microstructure-correlation in three different alloys: AlSi10Mg, Ti6Al4V, and 304L stainless steel, where six articles are presented. Hence, this Special Issue outlines microstructure–property correlations in the SLM processed materials and provides a value addition to the field of AM.

Download or read book Additive and Subtractive Manufacturing written by J. Paulo Davim and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-01-20 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing (AM) and subtractive manufacturing (SM) offer numerous advantages in the production of single and multiple components. They provide incomparable design independence and are used to fabricate products in several industries, e.g.: aeronautic, automotive, biomedical, etc. The book presents recent results of processes including 3D printing, SLS (selective laser sintering), EBM (electron beam melting) and Precise Cutting and Drilling.

Download or read book Advanced Machining Processes of Metallic Materials written by Wit Grzesik and published by Elsevier. This book was released on 2016-11-15 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Machining Processes of Metallic Materials: Theory, Modelling and Applications, Second Edition, explores the metal cutting processes with regard to theory and industrial practice. Structured into three parts, the first section provides information on the fundamentals of machining, while the second and third parts include an overview of the effects of the theoretical and experimental considerations in high-level machining technology and a summary of production outputs related to part quality. In particular, topics discussed include: modern tool materials, mechanical, thermal and tribological aspects of machining, computer simulation of various process phenomena, chip control, monitoring of the cutting state, progressive and hybrid machining operations, as well as practical ways for improving machinability and generation and modeling of surface integrity. This new edition addresses the present state and future development of machining technologies, and includes expanded coverage on machining operations, such as turning, milling, drilling, and broaching, as well as a new chapter on sustainable machining processes. In addition, the book provides a comprehensive description of metal cutting theory and experimental and modeling techniques, along with basic machining processes and their effective use in a wide range of manufacturing applications. The research covered here has contributed to a more generalized vision of machining technology, including not only traditional manufacturing tasks, but also potential (emerging) new applications, such as micro and nanotechnology. - Includes new case studies illuminate experimental methods and outputs from different sectors of the manufacturing industry - Presents metal cutting processes that would be applicable for various technical, engineering, and scientific levels - Includes an updated knowledge of standards, cutting tool materials and tools, new machining technologies, relevant machinability records, optimization techniques, and surface integrity

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.

Download or read book Laser Additive Manufacturing of High Performance Materials written by Dongdong Gu and published by Springer. This book was released on 2015-04-21 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book entitled “Laser Additive Manufacturing of High-Performance Materials” covers the specific aspects of laser additive manufacturing of high-performance new materials components based on an unconventional materials incremental manufacturing philosophy, in terms of materials design and preparation, process control and optimization and theories of physical and chemical metallurgy. This book describes the capabilities and characteristics of the development of new metallic materials components by laser additive manufacturing process, including nanostructured materials, in situ composite materials, particle reinforced metal matrix composites, etc. The topics presented in this book, similar as laser additive manufacturing technology itself, show a significant interdisciplinary feature, integrating laser technology, materials science, metallurgical engineering and mechanical engineering. This is a book for researchers, students, practicing engineers and manufacturing industry professionals interested in laser additive manufacturing and laser materials processing. Dongdong Gu is a Professor at College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics (NUAA), PR China.

Download or read book Micromachining written by Zdravko Stanimirović and published by BoD – Books on Demand. This book was released on 2019-11-20 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: To present their work in the field of micromachining, researchers from distant parts of the world have joined their efforts and contributed their ideas according to their interest and engagement. Their articles will give you the opportunity to understand the concepts of micromachining of advanced materials. Surface texturing using pico- and femto-second laser micromachining is presented, as well as the silicon-based micromachining process for flexible electronics. You can learn about the CMOS compatible wet bulk micromachining process for MEMS applications and the physical process and plasma parameters in a radio frequency hybrid plasma system for thin-film production with ion assistance. Last but not least, study on the specific coefficient in the micromachining process and multiscale simulation of influence of surface defects on nanoindentation using quasi-continuum method provides us with an insight in modelling and the simulation of micromachining processes. The editors hope that this book will allow both professionals and readers not involved in the immediate field to understand and enjoy the topic.

Download or read book An Overview of Densification Microstructure and Mechanical Property of Additively Manufactured Ti 6Al 4V Comparison Among Selective Laser Melting Electron Beam Melting Laser Metal Deposition and Selective Laser Sintering and with Conventional Powder written by Ming Yan and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V - Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder.

Download or read book Surface Engineering of Light Alloys written by Hanshan Dong and published by Elsevier. This book was released on 2010-05-24 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing use of light alloys in industries such as aerospace, sports equipment and biomedical devices is driving research into surface engineering technologies to enhance their properties for the desired end use. Surface engineering of light alloys: Aluminium, magnesium and titanium alloys provides a comprehensive review of the latest technologies for modifying the surfaces of light alloys to improve their corrosion, wear and tribological properties.Part one discusses surface degradation of light alloys with chapters on corrosion behaviour of magnesium alloys and protection techniques, wear properties of aluminium-based alloys and tribological behaviour of titanium alloys. Part two reviews surface engineering technologies for light alloys including anodising, plasma electrolytic oxidation, thermal spraying, cold spraying, physical vapour deposition, plasma assisted surface treatment, PIII/PSII treatments, laser surface modification, ceramic conversion and duplex treatments. Part three covers applications for surface engineered light alloys including sports equipment, biomedical devices and plasma electrolytic oxidation and anodised aluminium alloys for spacecraft applications.With its distinguished editor and international team of contributors, Surface engineering of light alloys: Aluminium, magnesium and titanium alloys is a standard reference for engineers, metallurgists and materials scientists looking for a comprehensive source of information on surface engineering of aluminium, magnesium and titanium alloys. - Discusses surface degradation of light alloys considering corrosion behaviour and wear and tribological properties - Examines surface engineering technologies and modification featuring plasma electrolytic oxidation treatments and both thermal and cold spraying - Reviews applications for engineered light alloys in sports equipment, biomedical devices and spacecraft

Download or read book Thermal Analysis of Selective Laser Melting SLM Process for Metallic Additive Manufacturing written by Shiva Ratakonda and published by . This book was released on 2017 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing widely known as 3D printing is receiving groundbreaking level of attention from industry and research laboratories. The research and development effort has gained tremendous momentum from simple 3D printers to advanced quick manufacturing systems that create functional parts without the need for tooling. While majority of the current 3D printers available in the market build parts using polymeric materials, recent research and development effort is also concentrated on building parts using metals, ceramics, and composites. Electron Beam Melting (EBM), Selective Laser Sintering (SLS), and Selective Laser Melting (SLM) are attractive processes for metallic parts. It is one of the emerging technologies that manufactures three-dimensional objects from a CAD model (e.g. Creo, SolidWorks, CATIA) through an additive process by heating, melting and cooling the deposited materials. The process is repeated in successive layers and is particularly attractive in creating complex shapes with intricate internal geometries. For example, bipolar plates with integrated multiple gas flow and internal cooling channels. A simulation model is essential for establishing all key process parameters for a specific design and material before manufacturing the part. In this study, a three-dimensional computational simulation model will be developed to characterize the Selective Laser Melting (SLM) -- based additive manufacturing (AM) process by laser melting of the pre-deposited particles and forming single layer of the desired part. Analyze the SLM-AM process through iterative refinement of the required beam power. Performing sensitivity analysis for the desired part by heating and melting of spherical particles to establish the optimum operating parameters in terms of the particles size and laser beam power.

Download or read book Three Dimensional Surface Topography written by Ken J Stout and published by Elsevier. This book was released on 2000-06-01 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully illustrated text explains the basic measurement techniques, describes the commercially available instruments and provides an overview of the current perception of 3-D topography analysis in the academic world and industry, and the commonly used 3-D parameters and plots for the characterizing and visualizing 3-D surface topography. It also includes new sections providing full treatment of surface characterization, filtering technology and engineered surfaces, as well as a fully updated bibliography.