Download or read book Examining Stress Relaxation in a Dissimilar Metal Weld Subjected to Postweld Heat Treatment written by K. Abburi Venkata and published by . This book was released on 2018 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissimilar metal welds are often required in nuclear power plants to join components made from austenitic steels to those from ferritic steels, particularly in fast breeder reactor plants, in order to join the intermediate heat exchanger to the steam generator. The process of welding alters the microstructure of the base materials and causes residual stresses to form, both because of the change in the microstructure and the differing thermal histories in various regions. Postweld heat treatment (PWHT) is required to relieve the residual stresses and achieve preferable microstructural gradients across the weld joint. Therefore, in order to arrive at the optimal PWHT process, it is necessary to investigate the effects of heat treatment on the joint integrity, microstructure, and residual stress relaxation in the welds. To investigate the effect of PWHT on the residual stress relaxation and corresponding alteration of microstructure across a welded joint, a dissimilar weld between modified 9Cr-1Mo steel and austenitic stainless steel AISI 316LN was made using autogenous electron beam welding. To achieve this, the welding process was first modeled numerically using finite element analysis, and the residual stress predictions were validated by experimental investigation using neutron diffraction. The validated model was then used to study the residual stress relaxation through the simulation of PWHT. The predicted stress relaxation was compared with contour method measurement of residual stresses in the actual welded plate subjected to PWHT. The results indicate that, although some relaxation of residual stresses occurred during PWHT, there is still a significant portion of highly localized residual stresses left in the specimen.

Download or read book Stress Relieving Heat Treatments of Welded Steel Constructions written by International Institute of Welding and published by Pergamon. This book was released on 1987 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metals Abstracts written by and published by . This book was released on 1999 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Heat Affected Zone and Weld Metal Toughness in Selected Steels Phase II written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume I reports on an assessment of a series of submerged arc welds prepared using 2 different wire-flux combinations giving weld metals alloyed with Ti-B, and Mo respectively and using different procedural variables such as heat input, post weld heat treatment, interpass temperature and joint restraint. Volume 2 explains the CVN and CTOD toughness of 4 gas metal arc welds prepared using Argon-5% carbon dioxide shielding gas and 3 consumable wires giving weld deposits alloyed with Mn-Mo, Mn-Si, and Ti-B respectively. All welds were made at 3.0 kJ/mm heat input, and the one with Ti-B weld metal was examined in the stress relieved condition also. The welds were examined for composition, strength, microstructure and inclusion distributions. Volume 3 examines a series of 14 welded assemblies prepared using the gas shielded flux cored arc welding process to examine the effect of welding procedural variables on weld metal toughness. All the welds were made using one of 3 different commercially available consumables and the Ar-25% CO2 gas shielding. Procedural variables studied included heat input, post weld heat treatment, and welding position lateral joint restraint. Their influence was assessed by microstructure characterization, deposit composition, CVN and CTOD toughness.

Download or read book Relaxation of Residual Stresses During Postweld Heat Treatment of Submerged arc Welds in a C Mn Nb Al Steel written by R. H. Leggatt and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Examination of the Thermal Stress State of Welded Metal Structures Subjected to the Effect of High temperature Corrosive Media written by V. Yakubovskii and published by . This book was released on 2000 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book WRC Bulletin written by Welding Research Council (U.S.) and published by . This book was released on 1975 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metallurgical Abstracts written by Institute of Metals and published by . This book was released on 1964 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1971 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superalloys written by Matthew J. Donachie and published by ASM International. This book was released on 2002 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers virtually all technical aspects related to the selection, processing, use, and analysis of superalloys. The text of this new second edition has been completely revised and expanded with many new figures and tables added. In developing this new edition, the focus has been on providing comprehensive and practical coverage of superalloys technology. Some highlights include the most complete and up-to-date presentation available on alloy melting. Coverage of alloy selection provides many tips and guidelines that the reader can use in identifying an appropriate alloy for a specific application. The relation of properties and microstructure is covered in more detail than in previous books.

Download or read book Advances in the Physical Metallurgy and Applications of Steels written by Metals Society and published by . This book was released on 1982 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Welding Journal written by and published by . This book was released on 1984 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Welding Research Abroad written by and published by . This book was released on 1988 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Residual Stresses 2018 written by Marc Seefeldt and published by Materials Research Forum LLC. This book was released on 2018-10-10 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: The European Conference on Residual Stresses (ECRS) series is the leading European forum for scientific exchange on internal and residual stresses in materials. It addresses both academic and industrial experts and covers a broad gamut of stress-related topics from instrumentation via experimental and modelling methodology up to stress problems in specific processes such as welding or shot-peening, and their impact on materials properties. Chapters: Diffraction Methods; Mechanical Relaxation Methods; Acoustic and Electromagnetic Methods; Composites, Nano and Microstructures; Films, Coatings and Oxides; Cold Working and Machining; Heat Treatments and Phase Transformations; Welding, Fatigue and Fracture: Stresses in Additive Manufacturing.

Download or read book Failure Analysis of Heat Treated Steel Components written by Lauralice de Campos Franceschini Canale and published by ASM International. This book was released on 2008 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Residual Stress Analysis on Welded Joints by Means of Numerical Simulation and Experiments written by Paolo Ferro and published by BoD – Books on Demand. This book was released on 2018-05-16 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to quantify residual stresses induced by welding processes through experimentation or numerical simulation has become, today more than ever, of strategic importance in the context of their application to advanced design. This is an ongoing challenge that commenced many years ago. Recent design criteria endeavour to quantify the effect of residual stresses on fatigue strength of welded joints to allow a more efficient use of materials and a greater reliability of welded structures. The aim of the present book is contributing to these aspects of design through a collection of case-studies that illustrate both standard and advanced experimental and numerical methodologies used to assess the residual stress field in welded joints. The work is intended to be of assistance to designers, industrial engineers and academics who want to deepen their knowledge of this challenging topic.