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Author : Jean Pierre Bergmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)
Download or read book Prevention of Solidification Cracking During Pulsed Laser Beam Welding written by Jean Pierre Bergmann and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. Schubert
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (247 download)
Download or read book Simulation of Solidification Cracking of Structural Steels During Laser Beam Welding written by E. Schubert and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vanessa Quiroz Penaranda
Publisher :
ISBN 13 : 9783839616017
Total Pages : 211 pages
Book Rating : 4.6/5 (16 download)
Download or read book Investigation of the Metallurgical and Thermo-Mechanical Factors Influencing Centreline Solidification Cracking by Laser Beam and Hybrid Welding written by Vanessa Quiroz Penaranda and published by . This book was released on 2020-07-09 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the present thesis is to make advancements in understanding solidification crack formation in laser beam and laser-hybrid welding. Focus was laid on the investigation of the metallurgical and thermo-mechanical influencing factors. The factors affecting centreline crack formation are investigated with the aim of finding conditions for hot crack resistant welds. The main emphasis is placed on the impact of structural design and the associated stiffness conditions of the structure to be welded on the hot cracking resistance of various materials such as pipeline steels and a variety of stainless steels. This thesis provides a critical assessment of the current hot cracking tests for the evaluation of centerline solidification cracking during laser beam and laser hybrid welding. The self-restraint and externally-loaded hot cracking tests, IRC- and CTW-test respectively, were successfully applied in conjunction with laser beam welding. Both tests enabled the assessment of centreline solidification cracks based on measurable critical parameters.
Author : G. Pacary
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book A Diagram for Predicting the Weld Solidification Cracking Susceptibility of Pulsed-laser Welds in Austenitic Stainless Steels written by G. Pacary and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S Katayama
Publisher : Elsevier
ISBN 13 : 0857098772
Total Pages : 685 pages
Book Rating : 4.8/5 (57 download)
Download or read book Handbook of Laser Welding Technologies written by S Katayama and published by Elsevier. This book was released on 2013-06-30 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser welding is a rapidly developing and versatile technology which has found increasing applications in industry and manufacturing. It allows the precision welding of small and hard-to-reach areas, and is particularly suitable for operation under computer or robotic control. The Handbook of laser welding technologies reviews the latest developments in the field and how they can be used across a variety of applications.Part one provides an introduction to the fundamentals of laser welding before moving on to explore developments in established technologies including CO2 laser welding, disk laser welding and laser micro welding technology. Part two highlights laser welding technologies for various materials including aluminium and titanium alloys, plastics and glass. Part three focuses on developments in emerging laser welding technologies with chapters on the applications of robotics in laser welding and developments in the modelling and simulation of laser and hybrid laser welding. Finally, part four explores the applications of laser welding in the automotive, railway and shipbuilding industries.The Handbook of laser welding technologies is a technical resource for researchers and engineers using laser welding technologies, professionals requiring an understanding of laser welding techniques and academics interested in the field. - Provides an introduction to the fundamentals of laser welding including characteristics, welding defects and evolution of laser welding - Discusses developments in a number of techniques including disk, conduction and laser micro welding - Focusses on technologies for particular materials such as light metal alloys, plastics and glass
Author : G. J. Davies
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.3/5 (97 download)
Download or read book Solidification and Casting written by G. J. Davies and published by . This book was released on 1973 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas Böllinghaus
Publisher : Springer Science & Business Media
ISBN 13 : 9783540223320
Total Pages : 412 pages
Book Rating : 4.2/5 (233 download)
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.
Author : John C. Lippold
Publisher : John Wiley & Sons
ISBN 13 : 1118210034
Total Pages : 370 pages
Book Rating : 4.1/5 (182 download)
Download or read book Welding Metallurgy and Weldability of Nickel-Base Alloys written by John C. Lippold and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date coverage of welding metallurgy aspects and weldability issues associated with Ni-base alloys Welding Metallurgy and Weldability of Nickel-Base Alloys describes the fundamental metallurgical principles that control the microstructure and properties of welded Ni-base alloys. It serves as a practical how-to guide that enables engineers to select the proper alloys, filler metals, heat treatments, and welding conditions to ensure that failures are avoided during fabrication and service. Chapter coverage includes: Alloying additions, phase diagrams, and phase stability Solid-solution strengthened Ni-base alloys Precipitation strengthened Ni-base alloys Oxide dispersion strengthened alloys and nickel aluminides Repair welding of Ni-base alloys Dissimilar welding Weldability testing High-chromium alloys used in nuclear power applications With its excellent balance between the fundamentals and practical problem solving, the book serves as an ideal reference for scientists, engineers, and technicians, as well as a textbook for undergraduate and graduate courses in welding metallurgy.
Author : Mingze Gao
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Defect Formation During High Power Laser Welding of A Creep Resistant Nickel Alloy written by Mingze Gao and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High power laser welding, with powers on the order of 10 kW, represents an attractive pathway for improving productivity in the single pass joining of thick section structures. During high power laser welding of Inconel 740H, a candidate material for the steam pipes in advanced ultra supercritical power plants, defects were observed, including keyhole collapse porosity, liquation cracking in the heat affected zone, and solidification cracking in the fusion zone, which displayed variations with processing conditions. Although liquation cracks and keyhole porosity were observed for all these high power laser welding conditions due to the high heat input and keyhole instability, horizontal solidification cracks across the fusion zones were observed at depths of around 70% to 80% of the weld depths, while the same material does not display similar solidification cracking during arc welding and low power laser welding conditions. A similar crack was not observed in another nickel alloy, Inconel 690, under the same welding conditions. To capture the complex interactions between alloy composition and processing conditions leading to the appearance of these cracks, well-tested heat transfer and fluid flow and thermo-mechanical models were integrated to calculate temperature histories, solidification conditions, and the resulting stresses and strain rates across the solidifying mushy zone. The coupling of these powerful models provided a means for evaluating horizontal solidification cracking susceptibility and predicting crack locations by identifying the simultaneous appearance of critical strain rate and tensile stress levels across different processing conditions and alloys. Since alloy composition is usually fixed within a specified range, the prevention of these defects requires tight control of the processing conditions. Wobble head laser welding, as an emerging tool in high power laser welding, was employed, which provides new opportunities to alter process conditions and produce defect free welds. Due to the additional transverse and backward motions with the laser beam oscillation, the laser energy density distribution across the weldment was altered, leading to variations in weld pool dimensions, solidification conditions, and stress state across the welds. The application of beam oscillation led to shorter, wider, and shallower weld pools. Due to these changes in weld profiles, the solidification rate was reduced while the temperature gradient was increased compared with the linear welds. These changes in the process conditions also impacted the stress state, which provide opportunities to prevent solidification cracking during high power laser welding process.
Author : Attila József Komlódi
Publisher :
ISBN 13 : 9783875252484
Total Pages : 159 pages
Book Rating : 4.2/5 (524 download)
Download or read book Detection and Prevention of Hot Cracks During Laser Welding of Aluminium Alloys Using Advanced Simulation Methods written by Attila József Komlódi and published by . This book was released on 2006 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan R. Lawrence
Publisher : Elsevier
ISBN 13 : 1845699815
Total Pages : 865 pages
Book Rating : 4.8/5 (456 download)
Download or read book Advances in Laser Materials Processing written by Jonathan R. Lawrence and published by Elsevier. This book was released on 2010-07-27 with total page 865 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of its capacity for continuous development and flexibility of use, the laser has become a mainstream manufacturing tool in many industrial sectors. This timely book relays the state-of-the-art in laser materials processing technology and applications and likely advances to be made from current research taking place around the world. The book also promotes appreciation for laser applications in a variety of industrial sectors.After two introductory chapters, the book reviews the main areas of laser processing. Starting with laser cutting and machining, the book discusses laser welding, annealing and hardening. It then considers surface treatment, coating and materials deposition as well as other engineering techniques such as peening and net-shape engineering, before discussing laser micro and nano-fabrication techniques. The book concludes by looking at modelling and process control.With its distinguished editorial team and contributions from renowned researchers working in every corner of the globe, Advances in laser materials processing provides a comprehensive yet detailed coverage of the many topics that comprise the field of laser materials processing. It provides a reference source for the scientists and engineers in such areas as metals processing and microelectronics, as well those conducting laser materials processing research in either academia or industry. - A comprehensive practitioner guide and reference work explaining state-of-the-art laser processing technologies in manufacturing and other disciplines - Explores the challenges, potential and future directions through the continuous development of new, application-specific lasers in materials processing - Discusses coatings and material deposition with lasers with including the production of coatings by laser-assisted processes, laser direct metal deposition and laser induced forward transfer (LIFT)
Author : John C. Lippold
Publisher : John Wiley & Sons
ISBN 13 : 1118230701
Total Pages : 418 pages
Book Rating : 4.1/5 (182 download)
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.
Author : I. E. Hernandez
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Nature and Prevention of Solidification Cracking in Welds written by I. E. Hernandez and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John A. Goldak
Publisher : Springer Science & Business Media
ISBN 13 : 0387232885
Total Pages : 326 pages
Book Rating : 4.3/5 (872 download)
Download or read book Computational Welding Mechanics written by John A. Goldak and published by Springer Science & Business Media. This book was released on 2006-07-04 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Welding Mechanics (CWM) provides readers with a complete introduction to the principles and applications of computational welding including coverage of the methods engineers and designers are using in computational welding mechanics to predict distortion and residual stress in welded structures, thereby creating safer, more reliable and lower cost structures. Drawing upon years of practical experience and the study of computational welding mechanics the authors instruct the reader how to: - understand and interpret computer simulation and virtual welding techniques including an in depth analysis of heat flow during welding, microstructure evolution and distortion analysis and fracture of welded structures, - relate CWM to the processes of design, build, inspect, regulate, operate and maintain welded structures, - apply computational welding mechanics to industries such as ship building, natural gas and automobile manufacturing. Ideally suited for practicing engineers and engineering students, Computational Welding Mechanics is a must-have book for understanding welded structures and recent technological advances in welding, and it provides a unified summary of recent research results contributed by other researchers.
Author : R Singh
Publisher : Elsevier
ISBN 13 : 1845695453
Total Pages : 581 pages
Book Rating : 4.8/5 (456 download)
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
Author : I. E. Hernandez
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (966 download)
Download or read book Nature and Prevention of Solidification Cracking in Welds written by I. E. Hernandez and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alan Gomersall
Publisher : Springer Science & Business Media
ISBN 13 : 3662301946
Total Pages : 171 pages
Book Rating : 4.6/5 (623 download)
Download or read book Lasers in Materials Processing written by Alan Gomersall and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
