Download or read book Study of Hydrogen Induced Weld Cracking in High Strength Low Alloy Steels written by and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Weld Cracking in High Strength Low Alloy Steels written by and published by . This book was released on 1980 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Numerous reports of investigations in this field are contained in the published and unpublished literature.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 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 Stress corrosion Cracking and Hydrogen stress Cracking of High strength Steel written by Ellis E. Fletcher and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-strength steels are susceptible to delayed cracking under suitable conditions. Frequently such a brittle failure occurs at a stress that is only a fraction of the nominal yield strength. Considerable controversy exists over whether such failures result from two separate and distinct phenomena or whether there is but one mechanism called by two different names. Stress-corrosion cracking is the process in which a crack propagates, at least partially, by the stress induced corrosion of a susceptible metal at the advancing tip of the stress-corrosion crack. There is considerable evidence that this cracking results from the electrtrochemical corrosion of a metal subjected to tensile stresses, either residual or externally applied. Hydrogen-stress cracking is cracking which occurs as the result of hydrogen in the metal lattice in combination with tensile stresses. Hydrogen-stress cracking cannot occur if hydrogen is prevented from entering the steel, or if hydrogen that has entered during processing or service is removed before permanent damage has occurred. It is generally agreed that corrosion plays no part in the actual fracture mechanism. This report was prepared to point out wherein the two fracture mechanisms under consideration are similar and wherein they differ. From the evidence available today, the present authors have concluded that there are two distinct mechansims of delayed failure. (Author).
Download or read book Welding Metallurgy and Weldability written by John C. Lippold and published by John Wiley & Sons. This book was released on 2014-11-10 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 Hydrogen Embrittlement of Thick Section High Strength Low Alloy Steel Stress Corrosion Cracking and written by William Donald Needham and published by . This book was released on 1986 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study was conducted to evaluate the corrosion performance of weldments of a high strength low alloy(HSLA) steel in a simulated seawater environment. This steel, designated HSLA80, was developed by the United States Navy for use in ship structural applications. Stress corrosion CRACKING(SCC) and hydrogen embrittlement(HEM) were investigated by conducting 42 Wedge-Opening load(WOL) tests as a function of stress intensity and corrosion potential and 33 Slow Strain Rate(SSR) tests as a function of strain rate and corrosion potential. The corrosion potentials were chosen to simulate the environmental conditions of free corrosion, cathodic protection and hydrogen generation. The results from this investigation indicated that HSLA 80 base metal and weldments were susceptible to hydrogen assisted cracking(HAC) in a seawater environment under conditions of continuous plastic deformation and triaxial stress in the presence of hydrogen. The heat-affected zone of the weldment was found to be the most susceptible portion of the weld joint. A lower bound was established for the critical stress intensity for stress corrosion cracking for HSLA 80 base metal and weldments.(Theses).
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 Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Heat affected Zone Hydrogen induced Cracking in High strength Steels written by Xin Yue and published by . This book was released on 2013 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Shipbuilding is heavily reliant on welding as a primary fabrication technique. Any high performance naval steel must also possess good weldability. It is therefore of great practical importance to conduct weldability testing of naval steels. Among various weldability issues of high-strength steels, hydrogen-induced cracking (HIC) in the heat-affected zone (HAZ) following welding is one of the biggest concerns. As a result, in the present work, research was conducted to study the HAZ HIC susceptibility of several naval steels.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Embrittlement and Stress Corrosion Cracking written by Alexander Robert Troiano and published by ASM International. This book was released on 1984-01-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Cracking Tendancies of Restrained Welds in High Strength Low Alloy Steels Under Hyperbaric Conditions written by Randolph Ni and published by . This book was released on 1987 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The weld cracking tendancies of two newly developed controlled rolled and accelerated cooled high strength low alloy (HSLA) steels are compared with a standard normalized steel of approximately the same ultimate tensile strength (50 kg/mm2). All steels were welded with the shielded metal arc welding process at 0, 100, and 200 psig. Welding was conducted in a hyperbaric chamber under conditions of 100% humidity, using the Lehigh self restraint weld cracking test. A literature and mail survey was conducted on current U.S. practices in underwater welding using the shielded metal arc process. Test plates were subjected to macrascopic examinations to determine the extent of any existent cracking. it was found that the low carbon equivalent HSLA steels exhibited an excellent resistance to cracking, even when welded without the use of preheat. The general tendency for cracking susceptibility to lower as the cracking susceptibility factor (Pw) lowers was validated, even under hyperbaric conditions. However, it was substantiated that the current theories used to determine cracking susceptibility may be too conservative in predicting cracking susceptibility for HSLA steels.
Download or read book Hydrogen induced Cracking in Three High Strength Steels written by Michael J. Purcell and published by . This book was released on 1984 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Assisted Fabrication of Materials written by Jyotsna Dutta Majumdar and published by Springer Science & Business Media. This book was released on 2012-11-03 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser assisted fabrication involves shaping of materials using laser as a source of heat. It can be achieved by removal of materials (laser assisted cutting, drilling, etc.), deformation (bending, extrusion), joining (welding, soldering) and addition of materials (surface cladding or direct laser cladding). This book on ́Laser assisted Fabrication’ is aimed at developing in-depth engineering concepts on various laser assisted macro and micro-fabrication techniques with the focus on application and a review of the engineering background of different micro/macro-fabrication techniques, thermal history of the treated zone and microstructural development and evolution of properties of the treated zone.
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.
