Download or read book Kinetics and Mechanism of Thermal Aging Embrittlement of Duplex Stainless Steels written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructural characteristics of long-term-aged cast duplex stainless steel specimens from eight laboratory heats and an actual component from a commercial boiling water reactor have been investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), small angle neutron scattering (SANS), and atom probe field ion microscopy (APFIM) techniques. Three precipitate phases, i.e., Cr-rich .cap alpha.' and the Ni- and Si-rich G phase, and .gamma.2 austenite, have been identified in the ferrite matrix of the aged specimens. For CF-8 grade materials, M23C6 carbides were identified on the austenite-ferrite boundaries as well as in the ferrite matrix for aging at greater than or equal to 450°C. It has been shown that Si, C, and Mo contents are important factors that influence the kinetics of the G-phase precipitation. However, TEM and APFIM analyses indicate that the embrittlement for less than or equal to400°C aging is primarily associated with Fe and Cr segregation in ferrite by spinodal decomposition. For extended aging, e.g., 6 to 8 years at 350 to 400°C, large platelike .cap alpha.' formed by nucleation and growth from the structure produced by the spinodal decomposition. The Cr content appears to play an important role either to promote the platelike .cap alpha.' (high Cr content) or to suppress the .cap alpha.' in favor of .gamma.2 precipitation (low Cr). Approximate TTT diagrams for the spinodal, .cap alpha.', G, .gamma.2, and the in-ferrite M23C6 have been constructed for 250 to 450°C aging. Microstructural modifications associated with a 550°C reannealing and a subsequent toughness restoration are also discussed. It is shown that the toughness restoration is associated primarily with the dissolution of the Cr-rich region in ferrite.
Download or read book Duplex Stainless Steels written by Iris Alvarez-Armas and published by John Wiley & Sons. This book was released on 2013-01-16 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Duplex Stainless Steels (DSSs) are chromium-nickel-molybdenum-iron alloys that are usually in proportions optimized for equalizing the volume fractions of austenite and ferrite. Due to their ferritic-austenitic microstructure, they possess a higher mechanical strength and a better corrosion resistance than standard austenitic steels. This type of steel is now increasing its application and market field due to its very good properties and relatively low cost. This book is a review of the most recent progress achieved in the last 10 years on microstructure, corrosion resistance and mechanical strength properties, as well as applications, due to the development of new grades. Special attention will be given to fatigue and fracture behavior and to proposed models to account for mechanical behavior. Each subject will be developed in chapters written by experts recognized around the international industrial and scientific communities. The use of duplex stainless steels has grown rapidly in the last 10 years, particularly in the oil and gas industry, chemical tankers, pulp and paper as well as the chemical industry. In all these examples, topics like welding, corrosion resistance and mechanical strength properties (mainly in the fatigue domain) are crucial. Therefore, the update of welding and corrosion properties and the introduction of topics like texture effects, fatigue and fracture strength properties, and mechanical behavior modeling give this book specific focus and character.
Download or read book Stainless Steels written by Joseph Ki Leuk Lai and published by Bentham Science Publishers. This book was released on 2012 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Stainless Steels: An Introduction and Their Recent Developments explains issues related to surface treatment, grain refinement, coloration, defect detection and powder metallurgy of stainless steels in detail with reference to new research findings. It al"
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Les aciers inoxydables duplex Trait MIM s rie mat riaux et m tallurgie written by ALVAREZ-ARMAS Iris and published by Lavoisier. This book was released on 2012-04-16 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les aciers inoxydables duplex sont des alliages Fe-Cr-Ni-Mo dont l'utilisation s'est fortement accrue depuis 10 ans. Leur structure biphasée leur assure une plus haute résistance mécanique et une plus haute résistance à la corrosion que n'ont les aciers inoxydables austénitiques standard. Ces nuances duplex ont un succès commercial continument croissant pour un large domaine d'applications (secteurs énergétiques, industries du gaz et du pétrole, industries chimiques, chimiquiers, industries du papier et de la pâte à papier…), dû à leurs très bonnes propriétés et leur relativement faible coût.
Download or read book Aging Degradation of Cast Stainless Steels written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A program is being conducted to investigate the significance of in-service embrittlement of cast duplex stainless steels under light-water operating conditions. Mechanical property data are presented from Charpy-impact, tensile, and J-R curve tests for several heats of cast stainless steel aged up to 10,000 h at 450, 400, 350, 320, and 290°C. The results indicate that thermal aging increases the tensile strength and decreases the impact energy, J/sub IC/, and tearing modulus of the steels. Also, the ductile-to-brittle transition curve shifts to higher temperatures. The fracture toughness results are consistent with the Charpy-impact data, i.e., the relative reduction in J/sub IC/ is similar to the relative decrease in impact energy. The ferrite content and concentration of C in the steel have a strong effect on the overall process of low-temperature embrittlement. The low-carbon CF-3 steels are the most resistant and Mo-containing CF-8M steels are most susceptible to embrittlement. Weakening of the ferrite/austenite phase boundaries by carbide precipitates has a significant effect on the kinetics and extent of embrittlement of the high-carbon CF-8 and CF-8M steels, particularly after aging at temperatures greater than or equal to400°C. The influence of N content and distribution of ferrite on loss of toughness are discussed. The data also indicate that existing correlations do not accurately represent the embrittlement behavior over the temperature range 280 to 450°C, i.e., extrapolation of high-temperature data to reactor temperatures may not be valid for some compositions of cast stainless steel.
Download or read book Encyclopedia of Iron Steel and Their Alloys Online Version written by Rafael Colás and published by CRC Press. This book was released on 2016-01-06 with total page 3918 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first of many important works featured in CRC Press’ Metals and Alloys Encyclopedia Collection, the Encyclopedia of Iron, Steel, and Their Alloys covers all the fundamental, theoretical, and application-related aspects of the metallurgical science, engineering, and technology of iron, steel, and their alloys. This Five-Volume Set addresses topics such as extractive metallurgy, powder metallurgy and processing, physical metallurgy, production engineering, corrosion engineering, thermal processing, metalworking, welding, iron- and steelmaking, heat treating, rolling, casting, hot and cold forming, surface finishing and coating, crystallography, metallography, computational metallurgy, metal-matrix composites, intermetallics, nano- and micro-structured metals and alloys, nano- and micro-alloying effects, special steels, and mining. A valuable reference for materials scientists and engineers, chemists, manufacturers, miners, researchers, and students, this must-have encyclopedia: Provides extensive coverage of properties and recommended practices Includes a wealth of helpful charts, nomograms, and figures Contains cross referencing for quick and easy search Each entry is written by a subject-matter expert and reviewed by an international panel of renowned researchers from academia, government, and industry. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
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 Proceedings of the Third International Symposium on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors written by George J. Theus and published by . This book was released on 1987 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Summary written by Argonne National Laboratory. Materials and Components Technology Division and published by . This book was released on 1987 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Nondestructive Evaluation VI written by Fumio Kojima and published by IOS Press. This book was released on 2002 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a collection of papers on electromagnetic nondestructive evaluation. It discusses developments in the growing field of electromagnetic nondestructive evaluation methods. Topics include evaluation of degradation mechanism in magnetic materials.
Download or read book Proceedings of the 2014 Energy Materials Conference written by The Minerals, Metals & Materials Society (TMS) and published by John Wiley & Sons. This book was released on 2015-04-06 with total page 1073 pages. Available in PDF, EPUB and Kindle. Book excerpt: This DVD contains a collection of papers presented at EnergyMaterials 2014, a conference organized jointly by The ChineseSociety for Metals (CSM) and The Minerals, Metals & MaterialsSociety (TMS), and held November 4-6, 2014, in Xi’an, ShaanxiProvince, China. With the rapid growth of the world’s energyproduction and consumption, the important role of energy materialshas achieved worldwide acknowledgement. Material producers andconsumers constantly seek the possibility of increasing strength,improving fabrication and service performance, simplifyingprocesses, and reducing costs. Energy Materials 2014 has provided aforum for academics, researchers, and engineers around the world toexchange state-of-the-art development and information on issuesrelated to energy materials. The papers on the DVD are organized around the followingtopics: Materials for Coal-Based Systems Materials for Gas Turbine Systems Materials for Nuclear Systems Materials for Oil and Gas Materials for Pressure Vessels
Download or read book Energy Materials 2014 written by The Minerals, Metals & Materials Society (TMS) and published by Springer. This book was released on 2017-03-16 with total page 899 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Multicomponent Alloys written by Zengbao Jiao and published by Springer Nature. This book was released on 2022-09-19 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book integrates aspects of computational materials science, physical metallurgy, alloy design, structure-properties relationships, and applications of advanced multicomponent alloys. It can serve as a textbook for courses on advanced structural and functional materials for undergraduate and graduate students. Notably, the book compiles cutting-edge research on the progress of materials science of multicomponent alloys from fundamentals to engineering applications. It can be of considerable interest for researchers and scientists in the field of materials science and engineering, mechanical engineering, and metallurgy engineering. In addition, this book not only summarizes the compositions, properties, and applications of various types of multicomponent alloys but also presents a complete idea on the efficient design of materials and processes to satisfy targeted performance in materials and structures. Thus, it can also be used as a reference book for engineers and researchers in industries.
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long term Embrittlement of Cast Duplex Stainless Steels in LWR Systems written by O. K. Chopra and published by . This book was released on 1984 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
