November 28, 2020

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Welding and Joining of Advanced High Strength Steels (AHSS)

Welding and Joining of Advanced High Strength Steels (AHSS)
Author : Mahadev Shome,Muralidhar Tumuluru
Publisher : Elsevier
Release Date : 2015-02-25
Category : Technology & Engineering
Total pages :204
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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

Advanced High-Strength Steels Application Guidelines V5

Advanced High-Strength Steels Application Guidelines V5
Author : Dr. Stuart Keeler, Sc.D.,Dr. Menachem Kimchi, M.Sc.
Publisher : WorldAutoSteel
Release Date : 2015-04-28
Category : Technology & Engineering
Total pages :250
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These guidelines are the leading AHSS information resource for engineers and press shop personnel. Previous versions covered metallurgy, forming, and joining. Version 5.0 also reflects new content highlighting the broader materials portfolio, advanced fabrication technologies, and optimized joining processes. Applications of the latest steels by automotive OEM and supplier plants will proliferate during the next 10 years due to mass reduction, improved safety requirements, mandated gas mileages and customer demands. Currently vehicle applications have not nearly exhausted the breadth of AHSS grades available that can achieve lightweighting targets at less cost and five to 20 times less production emissions than alternative low density materials. This rapid increase in demand requires users of AHSS to quickly accumulate both basic understanding and application knowledge. AHSS Guidelines Version 5.0 gathers that knowledge and experience in two volumes. Volume I includes metallurgy, forming and joining. Following the series of UltraLight programs* a decade ago, which influenced the growth of High-Strength Steels (HSS) and AHSS vehicle applications around the globe, WorldAutoSteel formed a special working group of expert members from major steel companies globally to create the first AHSS Guidelines. The publication explains how and why AHSS steels are different from traditional higher strength steels in terms of formability capabilities, fabrication, and joining. Over the last decade the size of each revised document increased as more knowledge was accumulated. The last document (Version 4.1) was published in June 2009. During the last five years, additional research and press shop experiences have resulted in even greater understanding of these unique steels. AHSS Guidelines Version 5.0 was created to capture this additional knowledge, as well as lessons learned from the FutureSteelVehicle (FSV) program. This update doubles the size of the previous volume, with a vast amount of new hands-on experience from the design and manufacturing of AHSS vehicle applications. Technical editors for AHSS Guidelines Version 5 are Stuart Keeler, Sc.D. Mechanical Metallurgy, who has served in this role since the first publication, and Menachem Kimchi, M.Sc. Welding Engineering, who contributed a wealth of joining information to Version 5.0.

Advanced High-Strength Steels

Advanced High-Strength Steels
Author : Mahmoud Y. Demeri
Publisher : ASM International
Release Date : 2013-08-01
Category : Electronic book
Total pages :312
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Examines the types, microstructures and attributes of AHSSAlso reviews the current and future applications, the benefits, trends and environmental and sustainability issues.

Trends in Welding Research 2012: Proceedings of the 9th International Conference

Trends in Welding Research 2012: Proceedings of the 9th International Conference
Author : Tarasankar DebRoy, Stan A. David, John N. DuPont, Toshihiko Koseki, Harry K. Bhadeshia
Publisher : ASM International
Release Date : 2013-03-01
Category : Welding
Total pages :1116
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The Trends conference attracts the world's leading welding researchers. Topics covered in this volume include friction stir welding, sensing, control and automation, microstructure and properties, welding processes, procedures and consumables, weldability, modeling, phase transformations, residual stress and distortion, physical processes in welding, and properties and structural integrity of weldments.

Advanced Joining Processes

Advanced Joining Processes
Author : Lucas F. M. da Silva,Mohamad S. El-Zein,Paulo Martins
Publisher : Elsevier
Release Date : 2020-10-31
Category : Technology & Engineering
Total pages :400
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Advanced Joining Processes: Welding, Plastic Deformation, and Adhesion brings together a range of advanced thermal, mechanical, and chemical methods of joining, offering an up-to-date resource for those looking to understand and utilize the very latest techniques. Efficient joining techniques are critical to a range of innovative applications, with technology in constant development. The first section of the book provides in-depth information on advanced welding techniques, including friction stir, explosive, ultrasonic, laser, electron beam, and computational weld analysis and fatigue of structures. The second section highlights key developments in joining by plastic deformation, adhesive bonding, and hybrid joining. The coverage of each technique is supported by practical guidance, detailed analysis, and finite element simulations. This is an essential reference for researchers and advanced students in joining, welding, adhesion, materials processing, mechanical engineering, plastics engineering, manufacturing, civil engineering, and automotive/aerospace engineering, as well as engineers, scientists, and R&D professionals, using joining, welding, and adhesion methods, across a range of industries. Presents the latest research findings and developments across welding, joining by plastic deformation, and adhesion Includes state-of-the-art methods, such as laser, ultrasonic and electron beam welding, hybrid joining, and the use of electromagnetic pulses Offers practical guidance, detailed analysis, and finite element simulations, for all techniques covered

Weldability Investigations of Advanced High Strength Steels Produced by Flash Processing

Weldability Investigations of Advanced High Strength Steels Produced by Flash Processing
Author : Brian J. Hanhold
Publisher : Unknown
Release Date : 2012
Category :
Total pages :194
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Abstract: Recently, a new heat treatment process (flash processing) has been shown to take low-alloy steel and create steels with advanced high strength steel (AHSS) level properties that are better than most available martensitic AHSS. This steel has also shown better ballistic protection capability than currently available high hard, rolled homogenous, aluminum and titanium armors. The unique process works by rapid induction heating into the austenite phase field and subsequent quenching in less than ten seconds. The resultant mixture of carbides, bainite, and martensite allows for the mechanical properties it achieves. However, the steel has not been evaluated for its weldability, which could limit both the ballistic and mechanical property advantages that it has over currently used materials. A well documented decrease in strength, ductility, and toughness in the welds occurs when the heat-affected zone (HAZ) becomes softer compared to its initial state. The goal of this research is to examine the effect of different welding conditions on flash processed steel microstructure and resultant mechanical properties. Low heat input gas metal arc welding (GMAW) was performed as an initial process that is typically done for joining armor steels. A comparison to a currently used high hard armor steel showed lower hardness and a larger softened region softening in the flash process HAZ. To further understand the microstructure evolution for both steels, HAZ physical simulations were conducted to examine the effect specific peak temperatures for a given heating and cooling rate. It was found that flash processed steel softened to 170HVN (from base metal hardness of 540HVN) when intercritically heated close to the Ac3 temperature. High hard steel softened to 290HVN (from base metal hardness of 530HVN) when heated below the Ac1. The reasoning was found that flash process steel transforms to the soft ferrite microstructure when intercritically heated with more ferrite forming as the more of the initial material is transformed to austenite. High hard transforms only to martensite when heated above the Ac1, therefore softening only when the original martensitic microstructure is tempered. To reduce the softening that is deleterious to ballistic properties, high power laser welding was used to reduce the heat input from 19kJ/in with GMAW to 4kJ/in. This resulted in the increase of the softest hardness in flash processed steel to 300HVN and 340HVN for high hard steel. The width of the softened region was also reduced from over 25mm using GMAW to 6mm. The softened microstructure was that of tempered initial microstructure for both steels. To examine the effect of these welding conditions, tensile testing was performed. It was found that the tensile strength for flash process reduced when using GMAW and laser welding. The ductility also showed a decrease in both welding conditions. Similar reductions in strength and ductility were seen in high hard armor. The failure of both welding conditions occurred in the softened region and fractography showed the presence of quasi cleave and small ductile dimples in the fracture surface with deeper ductile dimples present in the GMAW.

Metallography XVI

Metallography XVI
Author : Margita Longauerová,Peter Hor?ak,Pavol Zubko
Publisher : Trans Tech Publications Ltd
Release Date : 2017-03-22
Category : Technology & Engineering
Total pages :646
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?he thematic scope of 16th International Symposium on Metallography and Materials Science (20 – 22 April 2016, Stará Lesná, Slovak Republic) - modern metallographic methods and techniques in scientific and engineering researches of properties and of the technological features of the advanced structure materials used in the different areas of modern industry. We hope this collection of papers will be useful for wide range of readers whose activity is related with materials science and with materials processing technologies.

Tailor Welded Blanks for Advanced Manufacturing

Tailor Welded Blanks for Advanced Manufacturing
Author : B Kinsey,X Wu
Publisher : Elsevier
Release Date : 2011-07-26
Category : Technology & Engineering
Total pages :240
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Tailor welded blanks are metallic sheets made from different strengths, materials, and/or thicknesses pre-welded together before forming into the final component geometry. By combining various sheets into a welded blank, engineers are able to ‘tailor’ the blank so that the properties are located precisely where they are needed and cost-effective, low weight components are produced. Tailor welded blanks for advanced manufacturing examines the manufacturing of tailor welded blanks and explores their current and potential future applications. Part one investigates processing and modelling issues in tailor welded blank manufacturing. Chapters discuss weld integrity, deformation during forming and the analytical and numerical simulation modelling of tailor welded blanks for advanced manufacturing. Part two looks at the current and potential future applications of tailor welded blanks. Chapters review tailor welded blanks of lightweight metals and of advanced high-strength steel and finally discuss the uses of tailor-welded blanks in the automotive and aerospace industries. With its distinguished editors and international team of expert contributors, Tailor welded blanks for advanced manufacturing proves an invaluable resource for metal fabricators, product designers, welders, welding companies, suppliers of welding machinery and anyone working in industries that use advanced materials such as in automotive and aerospace engineering. Engineers and academics involved in manufacturing and metallurgy may also find this book a useful reference. Examines the manufacturing of tailor welded blanks and explores their current and potential future applications Investigates processing and quality issues in tailor welded blank manufacturing including weld integrity and deformation Reviews both current and potential future applications of tailor welded blanks as well as specific applications in the automotive and aerospace industries

Advanced High-Strength Steels

Advanced High-Strength Steels
Author : Mahmoud Y. Demeri
Publisher : ASM International
Release Date : 2013-08-01
Category : Electronic book
Total pages :312
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Examines the types, microstructures and attributes of AHSSAlso reviews the current and future applications, the benefits, trends and environmental and sustainability issues.

Failure Mechanisms of Advanced Welding Processes

Failure Mechanisms of Advanced Welding Processes
Author : X Sun
Publisher : Elsevier
Release Date : 2010-07-15
Category : Technology & Engineering
Total pages :336
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Many new, or relatively new, welding processes such as friction stir welding, resistance spot welding and laser welding are being increasingly adopted to replace or improve on traditional welding techniques. Before advanced welding techniques are employed, their potential failure mechanisms should be well understood and their suitability for welding particular metals and alloys in different situations should be assessed. Failure mechanisms of advanced welding processes provides a critical analysis of advanced welding techniques and their potential failure mechanisms. The book contains chapters on the following topics: Mechanics modelling of spot welds under general loading conditions and applications to fatigue life predictions, Resistance spot weld failure mode and weld performance for aluminium alloys, dual phase steels and TRIP steels, Fatigue behaviour of spot welded joints in steel sheets, Non-destructive evaluation of spot weld quality, Solid state joining - fundamentals of friction stir welding, Failure mechanisms in friction stir welds, Microstructure characteristics and mechanical properties of laser weld bonding of magnesium alloy to aluminium alloy, Fatigue in laser welds, Weld metal ductility and its influence on formability of tailor welded blanks, Joining of lightweight materials using reactive nanofoils, and Fatigue life prediction and improvements for MIG welded advanced high strength steel weldments. With its distinguished editor and international team of contributors, Failure mechanisms of advanced welding processes is a standard reference text for anyone working in welding and the automotive, shipbuilding, oil and gas and other metal fabrication industries who use modern and advanced welding processes. Provides a critical analysis of advanced welding techniques and their potential failure mechanisms Experts in the field survey a range of welding processes and examine reactions under various types of loading conditions Examines the current state of fatigue life prediction of welded materials and structures in the context of spot welded joints and non-destructive evaluation of quality

Proceedings of the 1st International Joint Symposium on Joining and Welding

Proceedings of the 1st International Joint Symposium on Joining and Welding
Author : H. Fujii
Publisher : Woodhead Publishing
Release Date : 2014-08-27
Category : Technology & Engineering
Total pages :350
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This book contains the papers from the Proceedings of the 1st international joint symposium on joining and welding held at Osaka University, Japan, 6-8 November 2013. The use of frictional heating to process and join materials has been used for many decades. Rotary and linear friction welding are vital techniques for many industrial sectors. More recently the development of friction stir welding (FSW) has significantly extended the application of friction processing. This conference is the first event organized by the three major institutes for joining and welding to focus on the broad range of friction processes. This symposium will provide the latest valuable information from academic and industrial experts from around the world on FSW, FSP, linear and rotary friction welding.

Welding Journal

Welding Journal
Author : Anonim
Publisher : Unknown
Release Date : 2009
Category : Welding
Total pages :129
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Automotive Steels

Automotive Steels
Author : Radhakanta Rana,Shiv Brat Singh
Publisher : Woodhead Publishing
Release Date : 2016-11-26
Category : Technology & Engineering
Total pages :478
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Automotive Steels: Design, Metallurgy, Processing and Applications explores the design, processing, metallurgy, and applications of automotive steels. While some sheet steels are produced routinely in high volume today, there have been significant advances in the use of steel in the automotive industry. This book presents these metallurgical and application aspects in a way that is not available in the current literature. The editors have assembled an international team of experts who discuss recent developments and future prospects for automotive steels, compiling essential reading for both academic and industrial metallurgists, automotive design engineers, and postgraduate students attending courses on the metallurgy of automotive materials. Presents recent developments on the design, metallurgy, processing, and applications of automotive steels Discusses automotive steels that are currently in the early stages of research, such as low-density and high modulus steels that are driving future development Covers traditional steels, advanced high strength steels, elevated Mn steels and ferrous composite materials

Advances in Welding Technologies for Process Development

Advances in Welding Technologies for Process Development
Author : Vishvesh J. Badheka,Jaykumar Vora
Publisher : CRC Press
Release Date : 2019-02-22
Category : Technology & Engineering
Total pages :289
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Within manufacturing, welding is by far the most widely used fabrication method used for production, leading to a rise in research and development activities pertaining to the welding and joining of different, similar, and dissimilar combinations of the metals. This book addresses recent advances in various welding processes across the domain, including arc welding and solid-state welding process, as well as experimental processes. The content is structured to update readers about the working principle, predicaments in existing process, innovations to overcome these problems, and direct industrial and practical applications. Key Features: Describes recent developments in welding technology, engineering, and science Discusses advanced computational techniques for procedure development Reviews recent trends of implementing DOE and meta-heuristics optimization techniques for setting accurate parameters Addresses related theoretical, practical, and industrial aspects Includes all the aspects of welding, such as arc welding, solid state welding, and weld overlay

Materials for Automobile Bodies

Materials for Automobile Bodies
Author : Geoffrey Davies
Publisher : Butterworth-Heinemann
Release Date : 2012-04-13
Category : Technology & Engineering
Total pages :416
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1 Introduction -- 2 Design and material utilization -- 3 Materials for consideration and use in automotive body structures -- 4 The role of demonstration, concept and competition cars -- 5 Component manufacture -- 6 Component assembly: materials joining technology -- 7 Corrosion and protection of the automotive structure -- 8 Environmental considerations -- 9 Future trends in automotive body materials.