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Weld Cracking in Ferrous Alloys

Weld Cracking in Ferrous Alloys
  • Author : R Singh
  • Publisher :Unknown
  • Release Date :2008-12-12
  • Total pages :576
  • ISBN : 1845695453
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Summary : Weld cracks are unacceptable defects that can compromise the integrity of welded structures. Weld cracking can lead to structural failures which at best will require remedial action and at worst can lead to loss of life. Weld cracking in ferrous alloys reviews the latest developments in the design, evaluation, prevention and repair of weld cracks. Part one reviews the fundamentals as well as recent advances in the areas of welding technology, design and material selection for preventing weld cracking. Part two analyses weld crack behaviour, evaluation and repair of cracking/cracked welds. The book benefits from an extensive and robust chapter on the topic of NDE and quality control that was contributed by one of the most respected non-destructive evaluation and development groups in the world. Part three covers environment assisted weld cracking. With its distinguished editor and international team of contributors, Weld cracking in ferrous alloys is a valuable source of reference for all those concerned with improving the quality of welding and welded components. In the planning and development of this book, particular care has been taken to make the chapters suitable for people from other disciplines who need to understand weld cracking and failure. Reviews the latest developments in the design, evaluation, prevention and repair of weld cracks Assesses recent advances in welding technology, design and material selection Analyses weld crack behaviour, evaluation and repair including environment assisted weld cracking

Hot Cracking Phenomena in Welds II

Hot Cracking Phenomena in Welds II
  • Author : Thomas Böllinghaus,Horst Herold,Carl E. Cross,J C Lippold
  • Publisher :Unknown
  • Release Date :2008-08-07
  • Total pages :467
  • ISBN : 3540786287
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Summary : Failure of welded components can occur during service as well as during fabrication. Most common, analyses of the resistance of welded components against failure are targeted at crack avoidance. Such evaluations are increasingly carried out by modern weldability studies, i. e. considering interactions between the selected base and filler materials, structural design and welding process. Such weldability investigations are particularly targeted to prevent hot cracking, as one of the most common cracking phenomena occurring during weld fabrication. To provide an international information and discussion platform to combat hot cracking, an international workshop on Hot Cracking Phenomena in Welds has been created, based on an initiative of the Institute for Materials and Joining Technology at the Otto-von-Guericke University in Magdeburg and the Division V. 5 – Safety of Joined Components at the Federal Institute for Materials Research and Testing (BAM) in Berlin, Germany. The first workshop was organized in Berlin under the topics mechanisms and phenomena, metallurgy and materials, modelling and simulations as well as testing and standardization. It consisted of 20 individual contributions from eight countries, which were compiled in a book that found a very ready market, not only in the welding community. As a consequence of increasing interest, it has been decided to establish the Workshop on Hot Cracking Phenomena in Welds as a regular event every three years embedded in the International Institute of Welding (IIW). Attached to the IIW Commission IX and II Spring intermediate meetings, the second workshop was organized in March 2007.

Failure Mechanisms of Advanced Welding Processes

Failure Mechanisms of Advanced Welding Processes
  • Author : X Sun
  • Publisher :Unknown
  • Release Date :2010-07-15
  • Total pages :336
  • ISBN : 1845699769
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Summary : 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

Friction Stir Welding

Friction Stir Welding
  • Author : Daniela Lohwasser,Zhan Chen
  • Publisher :Unknown
  • Release Date :2009-12-18
  • Total pages :436
  • ISBN : 1845697715
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Summary : Friction stir welding (FSW) is a highly important and recently developed joining technology that produces a solid phase bond. It uses a rotating tool to generate frictional heat that causes material of the components to be welded to soften without reaching the melting point and allows the tool to move along the weld line. Plasticized material is transferred from the leading edge to trailing edge of the tool probe, leaving a solid phase bond between the two parts. Friction stir welding: from basics to applications reviews the fundamentals of the process and how it is used in industrial applications. Part one discusses general issues with chapters on topics such as basic process overview, material deformation and joint formation in friction stir welding, inspection and quality control and friction stir welding equipment requirements and machinery descriptions as well as industrial applications of friction stir welding. A chapter giving an outlook on the future of friction stir welding is included in Part one. Part two reviews the variables in friction stir welding including residual stresses in friction stir welding, effects and defects of friction stir welds, modelling thermal properties in friction stir welding and metallurgy and weld performance. With its distinguished editors and international team of contributors, Friction stir welding: from basics to applications is a standard reference for mechanical, welding and materials engineers in the aerospace, automotive, railway, shipbuilding, nuclear and other metal fabrication industries, particularly those that use aluminium alloys. Provides essential information on topics such as basic process overview, materials deformation and joint formation in friction stir welding Inspection and quality control and friction stir welding equipment requirements are discussed as well as industrial applications of friction stir welding Reviews the variables involved in friction stir welding including residual stresses, effects and defects of friction stir welds, modelling thermal properties, metallurgy and weld performance

Condition Assessment of Aged Structures

Condition Assessment of Aged Structures
  • Author : J K Paik,R E Melchers
  • Publisher :Unknown
  • Release Date :2014-01-23
  • Total pages :552
  • ISBN : 1845695216
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Summary : Any structural system in service is subject to age-related deterioration, leading to potential concerns regarding maintenance, health & safety, environmental and economic implications. Condition assessment of aged structures is an invaluable, single source of information on structural assessment techniques for marine and land-based structures such as ships, offshore installations, industrial plant and buildings. Topics covered include: - Current practices and standards for structural condition assessment - Fundamental mechanisms and advanced mathematical methods for predicting structural deterioration - Residual strength assessment of deteriorated structures - Inspection and maintenance of aged structures - Reliability and risk assessment of aged structures Professionals from a broad range of disciplines will be able to gain a better understanding of current practices and standards for structural condition assessment or health monitoring, and what future trends might be. Single source of information on structural assessment techniques for marine and land-based structures Examines the residual strength and reliability of aged structures Assesses current practices covering inspection, health monitoring and maintenance

Hot Cracking Phenomena in Welds

Hot Cracking Phenomena in Welds
  • Author : Thomas Böllinghaus,Horst Herold
  • Publisher :Unknown
  • Release Date :2005-12-05
  • Total pages :394
  • ISBN : 354027460X
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Summary : Although the avoidance of hot cracking still represents a major topic in modern fabrication welding components, the phenomena have not yet been fully understood. Through the 20 individual contributions from experts all over the world the present state of knowledge about hot cracking during welding is defined, and the subject is approached from four different viewpoints. The first chapter provides an overview of the various hot cracking phenomena. Different mechanisms of solidification cracking proposed in the past decades are summarized and new insight is particularly given into the mechanism of ductility dip cracking. The effects of different alloying elements on the hot cracking resistance of various materials are shown in the second chapter and, as a special metallurgical effect, the initiation of stress corrosion cracking at hot cracks has been highlighted. The third chapter outlines how numerical analyses and other modelling techniques can be utilized to describe hot cracking phenomena and how such results might contribute to the explanation of the mechanisms. Various hot cracking test procedures are presented in the final chapter with a special emphasis on standardization. For the engineering and natural scientists in research and development the book provides both, new insight and a comprehensive overview of hot cracking phenomena in welds. The contributions additionally give numerous individual solutions and helpful advice for international welding engineers to avoid hot cracking in practice. Furthermore, it represents a very helpful tool for upper level metallurgical and mechanical engineering students.

Metallurgy of Welding

Metallurgy of Welding
  • Author : J. F. Lancaster
  • Publisher :Unknown
  • Release Date :2012-12-06
  • Total pages :266
  • ISBN : 940109506X
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Summary : This book is intended, like its predecessor (The metallurgy of welding, brazing and soldering), to provide a textbook for undergraduate and postgraduate students concerned with welding, and for candidates taking the Welding Institute examinations. At the same time, it may prove useful to practising engineers, metallurgists and welding engineers in that it offers a resume of information on welding metallurgy together with some material on the engineering problems associated with welding such as reliability and risk analysis. In certain areas there have been developments that necessitated complete re-writing of the previous text. Thanks to the author's colleagues in Study Group 212 of the International Institute of Welding, understanding of mass flow in fusion welding has been radically transformed. Knowledge of the metallurgy of carbon and ferritic alloy steel, as applied to welding, has continued to advance at a rapid pace, while the literature on fracture mechanics accumulates at an even greater rate. In other areas, the welding of non-ferrous metals for example, there is little change to report over the last decade, and the original text of the book is only slightly modified. In those fields where there has been significant advance, the subject has become more quantitative and the standard of math ematics required for a proper understanding has been raised.

Welding Metallurgy and Weldability

Welding Metallurgy and Weldability
  • Author : John C. Lippold
  • Publisher :Unknown
  • Release Date :2014-11-10
  • Total pages :424
  • ISBN : 1118960319
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Summary : Describes the weldability aspects of structural materials used in a wide variety of engineering structures, including steels, stainless steels, Ni-base alloys, and Al-base alloys Welding Metallurgy and Weldability describes weld failure mechanisms associated with either fabrication or service, and failure mechanisms related to microstructure of the weldment. Weldability issues are divided into fabrication and service related failures; early chapters address hot cracking, warm (solid-state) cracking, and cold cracking that occur during initial fabrication, or repair. Guidance on failure analysis is also provided, along with examples of SEM fractography that will aid in determining failure mechanisms. Welding Metallurgy and Weldability examines a number of weldability testing techniques that can be used to quantify susceptibility to various forms of weld cracking. Describes the mechanisms of weldability along with methods to improve weldability Includes an introduction to weldability testing and techniques, including strain-to-fracture and Varestraint tests Chapters are illustrated with practical examples based on 30 plus years of experience in the field Illustrating the weldability aspects of structural materials used in a wide variety of engineering structures, Welding Metallurgy and Weldability provides engineers and students with the information needed to understand the basic concepts of welding metallurgy and to interpret the failures in welded components.

Ferrous Alloy Metallurgy - Liquid Lithium Corrosion and Welding. Progress Report, January 1-December 31, 1980

Ferrous Alloy Metallurgy - Liquid Lithium Corrosion and Welding. Progress Report, January 1-December 31, 1980
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1980
  • Total pages :229
  • ISBN : 09876543XX
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Summary : Fatigue crack growth has been used to evaluate the interaction between liquid lithium and an imposed stress. Fatigue crack growth data on type 304L stainless steel at 700C and 2 1/4Cr-1Mo steel between 500 and 700C show that for all imposed test conditions (i.e. frequency, temperature, and nitrogen content in the lithium) the interaction of lithium with the strain at the crack tip results in enhanced crack growth rates. The enhanced growth rates result from the effects of either enhanced grain boundary penetration or a change in crack propagation mechanism due to liquid metal embrittlement. Auger spectroscopy of grain boundary penetrated specimen shows that a lithium-oxygen compound forms at the grain boundary. Moessbauer evaluations of the ferrite layer of corroded type 304 stainless steel are being used to develop a model for weight loss in liquid lithium. The welding research in progress is directed to characterize the influence of variations of the austenitic weld metal composition on the microstructural and mechanical properties of dissimilar metal weldments. Weldments of 2 1/4Cr-1Mo steel to 316 stainless steel have been investigated for fusion microstructure, thermal expansion impact strength and characterization of specific long time in-service failures. Modification of weld metal microstructures by microalloy additions is being investigated as a concept to improve weld metal properties. The behavior of a strip electrode in a gas metal arc is being investigated to determine the feasibility of gas metal arc weld strip overlay cladding.

Hot Cracking Phenomena in Welds

Hot Cracking Phenomena in Welds
  • Author : Thomas Böllinghaus
  • Publisher :Unknown
  • Release Date :2005-03-08
  • Total pages :394
  • ISBN : 9783540223320
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Summary : Hot cracking in welds still has not been fully understood. Hot Cracking Phenomena in Welds contains 20 individual contributions from experts all over the world. The book provides the latest insight on hot cracking phenomena in welds and gives a comprehensive overview of the state of knowledge in this subject, addressing engineers and scientists in research and development. It contains numerous solutions and helpful guidance on specific problems, particularly for welding engineers confronted with hot cracking in practice. The book touches all three types of hot cracking, namely solidification cracking, liquation cracking and ductility dip cracking. It explains the differences of the mechanisms, thus representing also a very helpful tool for metallurgists and advanced engineering students. TOC:Phenomena and Mechanisms.- Metallurgy and Materials.- Modelling and Simulation.- Testing and Standardisation.

Hot Cracking Phenomena in Welds III

Hot Cracking Phenomena in Welds III
  • Author : John Lippold,Thomas Böllinghaus,Carl E. Cross
  • Publisher :Unknown
  • Release Date :2011-05-03
  • Total pages :439
  • ISBN : 9783642168642
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Summary : This is the third in a series of compendiums devoted to the subject of weld hot cracking. It contains 22 papers presented at the 3rd International Hot Cracking Workshop in Columbus, Ohio USA in March 2010. In the context of this workshop, the term “hot cracking” refers to elevated temperature cracking associated with either the weld metal or heat-affected zone. These hot cracking phenomena include weld solidification cracking, HAZ and weld metal liquation cracking, and ductility-dip cracking. The book is divided into three major sections based on material type; specifically aluminum alloys, steels, and nickel-base alloys. Each of these sections begins with a keynote paper from prominent researchers in the field: Dr. Sindo Kou from the University of Wisconsin, Dr. Thomas Böllinghaus from BAM and the University of Magdeburg, and Dr. John DuPont from Lehigh University. The papers contained within include the latest insight into the mechanisms associated with hot cracking in these materials and methods to prevent cracking through material selection, process modification, or other means. The three Hot Cracking Phenomena in Welds compendiums combined contain a total of 64 papers and represent the best collection of papers on the topic of hot cracking ever assembled.

Welding Steels Without Hydrogen Cracking

Welding Steels Without Hydrogen Cracking
  • Author : Norman Bailey,F R Coe,T G Gooch,P H M Hart,N Jenkins,R J Pargeter
  • Publisher :Unknown
  • Release Date :1993-08-17
  • Total pages :160
  • ISBN : 9781855730144
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Summary : A comprehensive guide to avoiding hydrogen cracking which serves as an essential problem-solver for anyone involved in the welding of ferritic steels. The authors provide a lucid and thorough explanation of the theoretical background to the subject but the main emphasis throughout is firmly on practice.

Welding Handbook

Welding Handbook
  • Author : American Welding Society
  • Publisher :Unknown
  • Release Date :1976
  • Total pages :229
  • ISBN : 09876543XX
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Summary :

The Technology and Properties of Ferrous Alloys for High-temperature Use

The Technology and Properties of Ferrous Alloys for High-temperature Use
  • Author : Matthew George Gemmill
  • Publisher :Unknown
  • Release Date :1966
  • Total pages :242
  • ISBN : 09876543XX
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Summary :

Embrittlement of Engineering Alloys

Embrittlement of Engineering Alloys
  • Author : C. L. Briant
  • Publisher :Unknown
  • Release Date :2013-10-22
  • Total pages :623
  • ISBN : 148328865X
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Summary : Treatise on Materials Science and Technology, Volume 25: Embrittlement of Engineering Alloys is an 11-chapter text that describes some situations that produce premature failure of several engineering alloys, including steels and nickel- and aluminum-base alloys. Chapters 1 to 3 consider situations where improper alloy composition, processing, and/or heat treatment can lead to a degradation of mechanical properties, even in the absence of an aggressive environment or an elevated temperature. Chapters 4 and 5 examine the effect of elevated temperatures on the mechanical properties of both ferrous and nonferrous alloys. Chapters 6 and 7 discuss the effects of corrosive environments on both stressed and unstressed materials. In these environments anodic dissolution is the primary step that leads to failure. Chapters 8 to 10 deal with the effects of aggressive environments that lead to enhanced decohesion or embrittlement of the metal, such as hydrogen, liquid metal, and irradiation-induced embrittlement. Chapter 11 looks into the embrittlement phenomena occurring during welding, one of the most common processing conditions to which a material could be subjected. This book will prove useful to materials scientists and researchers.

Welding Journal

Welding Journal
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1945
  • Total pages :229
  • ISBN : 09876543XX
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Summary : "Current welding literature" included in each volume.

Welding Research Abroad

Welding Research Abroad
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1999
  • Total pages :229
  • ISBN : 09876543XX
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Summary :

Metals Abstracts

Metals Abstracts
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1985
  • Total pages :229
  • ISBN : 09876543XX
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Summary :

Hydrogen Degradation of Ferrous Alloys

Hydrogen Degradation of Ferrous Alloys
  • Author : Richard A. Oriani,John Price Hirth,Michał Śmiałowski
  • Publisher :Unknown
  • Release Date :1985
  • Total pages :886
  • ISBN : 09876543XX
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Summary :

Laser Material Processing

Laser Material Processing
  • Author : W. M. Steen,Kenneth Watkins
  • Publisher :Unknown
  • Release Date :2003
  • Total pages :408
  • ISBN : 9781852336981
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Summary : This book will sell because there are an increasing number of University and technical courses which require knowledge of lasers and their applications.

Nickel-steel: a Synopsis of Experiment and Opinion

Nickel-steel: a Synopsis of Experiment and Opinion
  • Author : David Henry Browne
  • Publisher :Unknown
  • Release Date :1899
  • Total pages :79
  • ISBN : 09876543XX
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Summary :