Download or read book Cracking in High strength Steel Weldments written by P. A. Kammer and published by . This book was released on 1964 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weldment cracking is a broad complex field. Even if one considers only cracking of steel weldments, the problems range from cracking at temperatures near the solidus during welding to cracking at room temperature days, weeks, or months after welding is completed. Numerous reports of investigations in this field are contained in the published and unpublished literature. However, most of these reports cover only a particular problem in a specific area of the broad field of weldment cracking. This review attempts to cover the major aspects of the entire field of weldment cracking. Necessarily, the review is for the most part general, only being specific in a few instances to illustrate a point. (Author).
Download or read book Determination of the Causes of Weld metal Cracking in High strength Steels and the Development of Heat treatable Low alloy steel Filler Wires for Use with the Inert gas shielded Arc welding Process written by Herbert W. Mishler and published by . This book was released on 1960 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on Weld Cracking in Multiple Pass Welds of High strength Steel written by Kunihiko Satoh and published by . This book was released on 1970 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Welding Steels Without Hydrogen Cracking written by Norman Bailey and published by Woodhead Publishing. This book was released on 1993-08-03 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Cracking Phenomena in Welds IV written by Thomas Böllinghaus and published by Springer. This book was released on 2016-02-10 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the fourth volume in the well-established series of compendiums devoted to the subject of weld hot cracking. It contains the papers presented at the 4th International Cracking Workshop held in Berlin in April 2014. In the context of this workshop, the term “cracking” refers to hot cracking in the classical and previous sense, but also to cold cracking, stress-corrosion cracking and elevated temp. solid-state cracking. A variety of different cracking subjects are discussed, including test standards, crack prediction, weldability determination, crack mitigation, stress states, numerical modelling, and cracking mechanisms. Likewise, many different alloys were investigated such as aluminum alloys, copper-aluminum dissimilar metal, austenitic stainless steel, nickel base alloys, duplex stainless steel, creep resistant steel, and high strength steel.
Download or read book Welding High strength Steels written by P. A. Kammer and published by . This book was released on 1966 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies of the developments in welding steels with yield strengths greater than 150 ksi have included low-alloy martensitic steels, medium-alloy martensitic steels, nickel maraging steels, and bainitic steels. Only weldments from medium-alloy martensitic steels and nickel maraging steels have mechanical properties approaching those of the base plate without a complete postweld heat treatment. The most serious problem with the other steel is low toughness in the weld fusion zone. Adequate weld metal toughness under conditions of elastic strain can be obtarined over the entire 150 to 225 ksi yield-strength range only if the tungsten-arc welding process is used. Processes with higher deposition rates can produce comparable weld deposits only in the lower portion of the range. Above a yield strength of 200 ksi, 18Ni maraging steel weldments have the best combination of strength and toughness. Below 200 ksi, the HP 9-4-25 medium-alloy martensitic steel and 12Ni maraging steel weldments have nearly equal properties.
Download or read book Assessing Hydrogen Assisted Cracking Modes in High Strength Steel Welds written by Steven A. Gedeon and published by . This book was released on 1988 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stress intensity which causes crack propagation in high strength steel weldments was quantified as a function of the hydrogen content at the crack location. This relationship was used to assess previously proposed theoretical hydrogen assisted cracking mechanisms. It was found that the microplasticity theory of Beachem can best describe how the stress intensity factor and hydrogen content affect the modes of intergranular, quasi-cleavage, and microvoid coalescence fracture. Implant test results were analyzed with the aid of fracture mechanics to determine the stress intensity associated with various modes of fracture. Diffusible weld hydrogen results were analyzed with the aid of hydrogen distribution model developed by Coe and Chano to determine the amount of hydrogen present at the crack location at the time of fracture. Keywords: High strength steel, Welding, Implant tests, Hydrogen embrittlement, Cracking (fracturing, Stress intensity. (jes).
Download or read book Welding Metallurgy and Weldability written by John C. Lippold and published by John Wiley & Sons. This book was released on 2014-11-24 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Studies of Delayed Crack in Welds of High strength Steel written by Seishin Kirihara and published by . This book was released on 1976 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Welded Structures written by Koichi Masubuchi and published by Elsevier. This book was released on 2013-10-22 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of Welded Structures: Residual Stresses, Distortion, and their Consequences encompasses several topics related to design and fabrication of welded structures, particularly residual stresses and distortion, as well as their consequences. This book first introduces the subject by presenting the advantages and disadvantages of welded structures, as well as the historical overview of the topic and predicted trends. Then, this text considers residual stresses, heat flow, distortion, fracture toughness, and brittle and fatigue fractures of weldments. This selection concludes by discussing the effects of distortion and residual stresses on buckling strength of welded structures and effects of weld defects on service behavior. This book also provides supplementary discussions on some related and selected subjects. This text will be invaluable to metallurgists, welders, and students of metallurgy and welding.
Download or read book Hot Cracking Phenomena in Welds written by Thomas Böllinghaus and published by Springer Science & Business Media. This book was released on 2005-03-08 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Weld Cracking in Ferrous Alloys written by R Singh and published by Elsevier. This book was released on 2008-12-12 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Research on High Strength Steels with an Improved Resistance Against Weld Cracking written by Frederick Frank Hillenbrand (III.) and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current American practices are surveyed to determine which weld cracking tests are used, and what methods are used to prevent and control weld cracking. The cracking resistance of a newly developed quenched and tempered High Strength Low Alloy (HSLA) steel. K-TEN8OCF, is researched. Using the Tekken self-restraint weld cracking test and Gas Metal Arc (GMA) welding, the new steel is compared against two commonly used high strength steels at various preheat levels. An investigation is made into the possible impacts of the cracking test results, based particularly upon the survey of practices. The steel test plates were subjected to X-ray, dye penetrant, and macroscopic and microscopic examinations to determine the extent of any existent cracking. It was found that the HBLA steel exhibited an excellent resistance to cracking, even when welded without the use of preheat; whereas, the T-1 and HY-80 steels had to be preheated in order to ensure cracking did not occur.
Download or read book Hydrogen Assisted Cracking of High Strength Steel Welds written by Steven Anthony Gedeon and published by . This book was released on 1987 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress corrosion Cracking Characterization of High strength Steels base Metals and Weldments written by Charles Tatsumi Fujii and published by . This book was released on 1978 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of studies on the effects of compositional, metallurigical, and microstructural factors on the SCC behavior of high-strength steels and weldments. The primary materials were quench-and-tempered steels or weldments in the HY-130 and HY-180 systems with complex martensitic microstructures. The cantilever beam method was used to establish the materials' SCC characteristics. These characteristics, complemented by fractographic and metallorgraphic examinations, identified potential pathways for improving weldment properties. The influence of processing, welding, and heat treating on microstructures, and correlations of the latter with SCC behavior and fracture modes, were examined. (Author).
Download or read book Introduction to the Physical Metallurgy of Welding written by Kenneth Easterling and published by Elsevier. This book was released on 2013-09-17 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the Physical Metallurgy of Welding deals primarily with the welding of steels, which reflects the larger volume of literature on this material; however, many of the principles discussed can also be applied to other alloys. The book is divided into four chapters, in which the middle two deal with the microstructure and properties of the welded joint, such as the weld metal and the heat-affected zone. The first chapter is designed to provide a wider introduction to the many process variables of fusion welding, particularly those that may influence microstructure and properties, while the final chapter is concerned with cracking and fracture in welds. A comprehensive case study of the Alexander Kielland North Sea accommodation platform disaster is also discussed at the end. The text is written for undergraduate or postgraduate courses in departments of metallurgy, materials science, or engineering materials. The book will also serve as a useful revision text for engineers concerned with welding problems in industry.
Download or read book A case of reheat cracking on HSLA steel weldments written by Inoslav Rak and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A case of reheat cracking on weldments of a real heavy welded construction is treated. The suspectibility to reheat cracking in accordance with known criteria and specimens are analysed. A decrease of toughness in HAZ as a consequence of stress relieving is determined. The parameter of fracture toughness in the term of COD in HAZ for welded and stress relieved condition is calculated. Due to guidance of PD 6493-80, the critical fault size in HAZ in welded and stress relieved condition is determined for a case of designed welds solution in which the cracking has appeared.
