Download or read book Formability Characterization of a New Generation High Strength Steels written by and published by . This book was released on 2003 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced high strength steels (AHSS) are being progressively explored by the automotive industry all around the world for cost-effective solutions to accomplish vehicle lightweighting, improve fuel economy, and consequently reduce greenhouse emissions. Because of their inherent high strength, attractive crash energy management properties, and good formability, the effective use of AHSS such as Duel Phase and TRIP (Transformation Induced Plasticity) steels, will significantly contribute to vehicle lightweighting and fuel economy. To further the application of these steels in automotive body and structural parts, a good knowledge and experience base must be developed regarding the press formability of these materials. This project provides data on relevant intrinsic mechanical behavior, splitting limits, and springback behavior of several lots of mild steel, conventional high strength steel (HSS), advanced high strength steel (AHSS) and ultra-high strength steel (UHSS), supplied by the member companies of the Automotive Applications Committee (AAC) of the American Iron and Steel Institute (AISI). Two lots of TRIP600, which were supplied by ThyssenKrupp Stahl, were also included in the study. Since sheet metal forming encompasses a very diverse range of forming processes and deformation modes, a number of simulative tests were used to characterize the forming behavior of these steel grades. In general, it was found that formability, as determined by the different tests, decreased with increased tensile strength. Consistant with previous findings, the formability of TRIP600 was found to be exceptionally good for its tensile strength.
Download or read book Novel Concepts for New Generation of High Strength Hot Dip Galvanizing Steel with Extra Formability NEWGENHSS written by and published by . This book was released on 2015 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: High strength steels with improved formability offer the potential of thickness reductions in forming automotive parts and thus contribute to lightweight concepts. In this context the NEWGENHSS Research Project aimed at the definition of innovative hot dip galvanized high strength steels for the automotive market. The dual phase and the interstitial free/HSS steel concepts were studied. The main objective was to select one dual-phase (DP) and one Interstitial Free high strength steel (IF-HSS) for a real industrial and application trial, with the purpose of obtaining the validation of the selected steel grades by the customers. . In the frame of NEWGENHSS Project, WPs structure followed a full material development path, starting from definition of laboratory scale investigations to final real car parts evaluation.^WP1 was addressed to the definition and preparation of laboratory casts of DP (ST1 and ST2) and IF-HSS (ST3, ST4 and ST5) steels, and their full characterization, by means of thermomechanical processing, microstructure investigation, mechanical properties and CCT curves. Results lead to the selection of several chemical compositions to be produced and tested in WP2 in a larger scale, in which such steels have been characterized to prepare the final industrial trials scheduled in WP3. On the basis of the new alloying concepts, an efficient processing route was defined for the DP steels that skip the cold-rolling step by making use of a low coiling temperature. This energyefficient processing route allows to reduce the production costs by around 10%. Aluminum addition concept in IF-HSS allowed to define a robust reduced temperature annealing cycle, meeting the high formability requirements together with targeted high strength.^After all the above mentioned production and characterization steps, WP4 was devoted to the final evaluation of the selected materials. For this purpose, cooperation with car-makers was established to produce real car parts for weight saving potential evaluation, as well as overall formability. The results allowed, an improved hole expansion ratio by 5% to 23% depending on composition and processing route (absolute values) and a higher FLC of the cold-rolled and annealed materials (10% higher for DP-Si and 14% higher for DP-B). In addition, complex forming operations could be realized without failure and welding was performed without problems due to the low carbon equivalent. The project outcome is potential weight reductions up to 20% in comparison to conventional microalloyed grades, allowing CO2 reductions in the transportation sector and the newly developed DP steels are ready for the market.
Download or read book Welding and Joining of Advanced High Strength Steels AHSS written by Mahadev Shome and published by Elsevier. This book was released on 2015-02-25 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welding and Joining of Advanced High Strength Steels (AHSS): The Automotive Industry discusses the ways advanced high strength steels (AHSS) are key to weight reduction in sectors such as automotive engineering. It includes a discussion on how welding can alter the microstructure in the heat affected zone, producing either excessive hardening or softening, and how these local changes create potential weaknesses that can lead to failure. This text reviews the range of welding and other joining technologies for AHSS and how they can be best used to maximize the potential of AHSS. Reviews the properties and manufacturing techniques of advanced high strength steels (AHSS) Examines welding processes, performance, and fatigue in AHSS Focuses on AHSS welding and joining within the automotive industry
Download or read book Advanced High Strength Steel And Press Hardening Proceedings Of The 4th International Conference On Advanced High Strength Steel And Press Hardening Ichsu2018 written by Ma Mingtu and published by World Scientific. This book was released on 2018-12-14 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: The automotive industry requirements for vehicle weight reduction, weight containment, improved part functionality and passenger safety have resulted in the increased use of steel grades with a fully martensitic microstructure. These steel grades are essential to improve the anti-intrusion resistance of automotive body parts and the related passenger safety during car collisions. Standard advanced high strength steel (AHSS) grades are notoriously difficult to be formed by cold stamping; they are characterized by elastic springback, poor stretch flangeability and low hole expansion ratios. Hot stamping has therefore received much attention recently as an alternative technology to produce AHSS automotive parts.In this book, selected articles from the Fourth International Conference on Advanced High Strength Steel and Press Hardening held on August 20-22th, 2018 in Hefei, China, are compiled. It focuses on AHSS for the development of press hardening of high performance sheet metal for lightweight vehicle, advanced digital manufacturing technology, as well as the physical metallurgy principles of the hot stamping process.Aiming at the process design and industrial application for hot stamping of press hardened steel and high strength aluminium alloy sheet, the effect of temperature and strain rate on the formability and mechanical properties of the products is discussed. In addition, more practical cases are provided concerning accurate modelling and multi-physics coupling simulation of the hot stamping process. Furthermore, the influence of tool design on forming process, more precise process control strategies to increase production efficiency, and the improvement of hot stamping equipment by advanced design methods will also be presented.
Download or read book Sheet Metal Forming written by Taylan Altan and published by ASM International. This book was released on 2012 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Descripción del editor: "heet forming fundamentals are thoroughly addressed in this comprehensive reference for the practical and efficient use of sheet forming technologies. The principle variables of sheet forming-including the interactions between variables-are clearly explained, as a basic foundation for the most effective use of computer aided modeling in process and die design.Topics include stress analysis, formability criteria, tooling, and materials for sheet forming. The book also covers the latest developments in sheet metal forming technology, including servo-drive presses and their applications, and advanced cushion systems in mechanical and hydraulic presses." (ASM International).
Download or read book Automotive Lightweighting Using Advanced High Strength Steels written by Paul E Geck and published by SAE International. This book was released on 2014-06-13 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced high-strength steels (AHSS) are a family of steels that are stronger than most steels and have better formability than today’s conventional high-strength steels. New U.S. safety and fuel economy regulations have intensified pressure on OEMs to reduce vehicle weight. These pressures are causing auto companies to rethink alternative material applications and to look for opportunities that steel offers. The purpose of this book is to provide information for engineers who are designing the next generation of lighter vehicles. The material in the book is presented to help them make informed decisions on what basic materials to use and how to optimize those materials to achieve cost-effective weight reduction. The emphasis is on steels in general and AHSS in particular. However, there is much information on comparisons of steel with alternative materials for different subsystems of the vehicle. To support the latest automotive challenges in terms of weight reduction, this book lays out the opportunities for alternative material use in automobiles and offers the most up-to-date design guidance in efficient architectures that use AHSS. It simultaneously explores weight savings and resulting fuel economy advantages of a strategic usage of AHSS. Realistic comparisons with other alternative materials are made through detailed analyses. It also offers test cases that demonstrate how AHSS technology has developed. The focus of the text is on body and chassis structures and the sheet metal of which these systems are primarily made. More of the content addresses the automotive body, as this is where most of the AHSS are being applied today. The past, present, and future of AHSS are covered, as well as competing technologies such as aluminum sheet metal.
Download or read book High Performance Structures and Materials V written by W. Patrick De Wilde and published by WIT Press. This book was released on 2010 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including the latest developments in design, optimisation, manufacturing and experimentation, this text presents a wide range of topics relating to advanced types of structures, particularly those based on new concepts and new types of materials.
Download or read book Metal Forming Processes written by Kakandikar Ganesh Marotrao and published by CRC Press. This book was released on 2022-08-25 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal forming processes include bulk forming and sheet metal forming with numerous applications. This book covers some of the latest developments aspects of these processes such as numerical simulations to achieve optimum combinations and to get insight into process capability. Implementation of new technologies to improve performance based on Computer Numerical Control (CNC) technologies are also discussed, including the use of CAD/CAM/CAE techniques to enhance precision in manufacturing. Applications of AI/ML, the Internet of Things (IoT), and the role of tribological aspects in green engineering are included to suit Industry 4.0. Features: Covers latest developments in various sheet metal forming processes Discusses improvements in numerical simulation with various material models Proposes improvements by optimum combination of process parameters Includes finite element simulation of processes and formability Presents a review on techniques to produce ultra-fine-grained materials This book is aimed at graduate students, engineers, and researchers in sheet metal forming, materials processing and their applications, finite element analysis, manufacturing, and production engineering.
Download or read book PRICM7 written by Jian Feng Nie and published by Trans Tech Publications Ltd. This book was released on 2010-06-30 with total page 3000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected, peer reviewed papers from the Seventh Pacific Rim International Conference on Advanced Materials and Processing, August 2-6, 2010, Cairns, Australia
Download or read book High Performance Ferrous Alloys written by Radhakanta Rana and published by Springer Nature. This book was released on 2020-12-18 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current state of understanding of emerging iron alloys and high-alloy ferrous systems, in comparison with some conventional steels, is compiled in this single volume to further their development. While most of the conventional steels are produced routinely today, many advanced high strength steels and iron-based alloys are still in the laboratory stage. The iron-based emerging alloys can yield high levels of mechanical and physical properties due to their new alloy concepts and novel microstructures leading to multiple benefits of their use in terms of sustainability and environmental impact. This book contains introductory chapters that present the requisite background knowledge on thermodynamics, phase diagrams, and processing routes used for the ferrous alloys to enable the readers a smooth understanding of the main chapters. Then, an overview of the conventional microalloyed steels and advanced high strength steels is given to present the benchmark of the existing steels and ferrous alloys manifesting their current state-of-the-art in terms of physical metallurgy and engineering applications. Subsequent chapters detail novel, emerging ferrous alloys and high-alloy ferrous systems. Summarizes the state-of-the-art of emerging iron-based alloys and the new processing and physical metallurgy-related developments of high-alloy iron systems; Explores new iron-based systems driven by the need for new properties, enhanced performance, sustainable processes and educed environmental impact; Compiles cutting-edge research on the progress of materials science of iron-based systems, from physical metallurgy to engineering applications, and possible avenues for future research.
Download or read book Forming the Future written by Glenn Daehn and published by Springer Nature. This book was released on 2021-07-10 with total page 2890 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this collection, scientists and engineers from across industry, academia, and government present their latest improvements and innovations in all aspects of metal forming science and technology, with the intent of facilitating linkages and collaborations among these groups. Chapters cover the breadth of metal forming topics, from fundamental science to industrial application.
Download or read book Materials Design and Applications II written by Lucas F. M. da Silva and published by Springer. This book was released on 2018-12-31 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights fundamental research on the design and application of engineering materials, and predominantly mechanical engineering applications. This area includes a wide range of technologies and materials, including metals, polymers, composites, and ceramics. Advanced applications include manufacturing cutting-edge materials, testing methods, and multi-scale experimental and computational aspects. The book introduces readers to a wealth of engineering applications in transport, civil, packaging and power generation.
Download or read book The Automotive Body Manufacturing Systems and Processes written by Mohammed A. Omar and published by John Wiley & Sons. This book was released on 2011-02-10 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Automotive Body Manufacturing Systems and Processes The Automotive Body Manufacturing Systems and Processes A comprehensive and dedicated guide to automotive production lines, The Automotive Body Manufacturing Systems and Processes addresses automotive body processes from the stamping operations through to the final assembly activities. To begin, it discusses current metal forming practices, including stamping engineering, die development, and dimensional validation, and new innovations in metal forming, such as folding based forming, super-plastic, and hydro forming technologies. The first section also explains details of automotive spot welding (welding lobes), arc welding, and adhesive bonding, in addition to flexible fixturing systems and welding robotic cells. Guiding readers through each stage in the process of automotive painting, including the calculations needed to compute the number of applicators and paint consumption based on vehicle dimensions and demand, along with the final assembly and automotive mechanical fastening strategies, the book’s systematic coverage is unique. The second module of the book focuses on the layout strategies of the automotive production line. A discussion of automotive aggregate planning and master production scheduling ensures that the reader is familiar with operational aspects. The book also reviews the energy emissions and expenditures of automotive production processes and proposes new technical solutions to reduce environmental impact. Provides extensive technical coverage of automotive production processes, discussing flexible stamping, welding, and painting lines Gives complete information on automotive production costing as well as the supplier selection process Covers systems from the operational perspective, describing the aggregate and master production planning Details technical aspects of flexible automotive manufacturing lines Methodically discusses the layout and location strategies of automotive manufacturing systems to encompass the structural elements Features topic-related questions with answers on a companion website
Download or read book Formability of Metallic Materials 2 000 A D written by John R. Newby and published by ASTM International. This book was released on 1982 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced High Strength Steels written by Mahmoud Y. Demeri and published by ASM International. This book was released on 2013-08-01 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the types, microstructures and attributes of AHSSAlso reviews the current and future applications, the benefits, trends and environmental and sustainability issues.
Download or read book 108 1 Hearings Department of The Interior and Related Agencies Appropriations For 2004 Part 5 2003 written by and published by . This book was released on 2003 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Formatibility of Metallic Materials 2000 A d written by and published by ASTM International. This book was released on with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
