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Author : Paul K. A. Predecki
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (33 download)
Download or read book Oxide Stability in Oxide Dispersion Strengthened Alloys written by Paul K. A. Predecki and published by . This book was released on 1961 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas John Grant
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (42 download)
Download or read book Oxide Dispersion Strengthened Alloys written by Nicholas John Grant and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael K. Miller
Publisher : Springer Science & Business Media
ISBN 13 : 1461542812
Total Pages : 247 pages
Book Rating : 4.4/5 (615 download)
Download or read book Atom Probe Tomography written by Michael K. Miller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microanalytical technique of atom probe tomography (APT) permits the spatial coordinates and elemental identities of the individual atoms within a small volume to be determined with near atomic resolution. Therefore, atom probe tomography provides a technique for acquiring atomic resolution three dimensional images of the solute distribution within the microstructures of materials. This monograph is designed to provide researchers and students the necessary information to plan and experimentally conduct an atom probe tomography experiment. The techniques required to visualize and to analyze the resulting three-dimensional data are also described. The monograph is organized into chapters each covering a specific aspect of the technique. The development of this powerful microanalytical technique from the origins offield ion microscopy in 1951, through the first three-dimensional atom probe prototype built in 1986 to today's commercial state-of-the-art three dimensional atom probe is documented in chapter 1. A general introduction to atom probe tomography is also presented in chapter 1. The various methods to fabricate suitable needle-shaped specimens are presented in chapter 2. The procedure to form field ion images of the needle-shaped specimen is described in chapter 3. In addition, the appearance of microstructural features and the information that may be estimated from field ion microscopy are summarized. A brief account of the theoretical basis for processes of field ionization and field evaporation is also included.
Author : Oleg D Neikov
Publisher : Elsevier
ISBN 13 : 0080559409
Total Pages : 644 pages
Book Rating : 4.0/5 (85 download)
Download or read book Handbook of Non-Ferrous Metal Powders written by Oleg D Neikov and published by Elsevier. This book was released on 2009-02-24 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manufacture and use of the powders of non-ferrous metals has been taking place for many years in what was previously Soviet Russia, and a huge amount of knowledge and experience has built up in that country over the last forty years or so. Although accounts of the topic have been published in the Russian language, no English language account has existed until now. Six prominent academics and industrialists from the Ukraine and Russia have produced this highly-detailed account which covers the classification, manufacturing methods, treatment and properties of the non-ferrous metals ( aluminium, titanium, magnesium, copper, nickel, cobalt, zinc, cadmium, lead, tin, bismuth, noble metals and earth metals). The result is a formidable reference source for those in all aspects of the metal powder industry. Covers the manufacturing methods, properties and importance of the following metals: aluminium, titanium, magnesium, copper, nickel, cobalt, zinc, cadmium, noble metals, rare earth metals, lead, tin and bismuth Expert Russian team of authors, all very experienced English translation and update of book previously published in Russian
Author : Nicholas John Grant
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Oxide Dispersion Strengthened Alloys written by Nicholas John Grant and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : RC. Benn
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (125 download)
Download or read book Microstructure and Property Relationships in Oxide Dispersion Strengthened Alloys written by RC. Benn and published by . This book was released on 1988 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of the thermomechanical processing parameters and recrystallization response of oxide dispersion strengthened (ODS) alloys is required to obtain the very high temperature properties unique to these materials. Useful strength is retained up to a relatively high fraction of the melting point due to the presence of fine uniformly dispersed, stable oxide particles. In this paper the factors affecting the development of microstructures to meet desired property goals will be discussed. The effects of powder structure, pre-cursor grain size, directional recrystallization, grain aspect ratio, ?/?' phase proportions, dispersoid content, and texture on properties will be reviewed. Long-term stress and creep rupture data will be discussed in terms of the corresponding microstructural changes. Such studies offer an insight into our understanding of the complex and unusual creep behavior in certain ODS alloys. These and other structure-property relationships will be addressed which offer significant practical applications.
Author : T. Yoshitake
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (125 download)
Download or read book Oxide Particle Stability in Oxide Dispersion Strengthened Ferritic Steels During Neutron Irradiation written by T. Yoshitake and published by . This book was released on 2004 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work focused on the evaluation of the oxide particles stability in neutron-irradiated ODS ferritic steels. Two types of ODS steels were examined and both had a single ferritic phase. The neutron irradiation was conducted in the experimental fast reactor JOYO. The initial microstructure in both steels had elongated grains along the axial direction and a dislocation structure with a high density produced during a mechanical alloying (MA) consolidation process. Oxide particles were distributed finely and uniformly over the ferritic matrix. The microstructure of irradiated ODS steels exhibited no void formation and a dislocation structure with high density. After irradiation, there were slight but significant changes in the size and density of the oxide particles. This change of the oxide indicated that recoil resolution of oxide particles might occur during neutron irradiation. Chemical analysis of the oxide particles by means of Energy Dispersive X-ray Spectroscopy (EDS) revealed that some of the oxide particles observed before and after irradiation had a complex configuration, such as a double-layered structure, implying that complex oxides with such a configuration are more stable than mono-oxides like TiO2 and Y2O3.
Author : Cury Suryanarayana
Publisher : CRC Press
ISBN 13 : 0203020642
Total Pages : 488 pages
Book Rating : 4.2/5 (3 download)
Download or read book Mechanical Alloying And Milling written by Cury Suryanarayana and published by CRC Press. This book was released on 2004-09-28 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book surveys the broad field of mechanical alloying from a scientific and technological perspective to form a timely and comprehensive resource valuable to both students and researchers. The treatment progresses from the historical background through a description of the process, the different metastable effects produced, and the mechanisms of
Author : G. H. Gessinger
Publisher : Elsevier
ISBN 13 : 148319244X
Total Pages : 363 pages
Book Rating : 4.4/5 (831 download)
Download or read book Powder Metallurgy of Superalloys written by G. H. Gessinger and published by Elsevier. This book was released on 2013-10-22 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder Metallurgy of Superalloys details the advancement of powder metallurgy in the context of producing superalloys. The book is comprised of nine chapters that cover the underlying principles of superalloys produced through powder metallurgy. The text first covers concerns in pre-alloyed dispersion-free powders, such as powder production and characterization; powder consolidation methods; and quality control and non-destructive evaluation of P/M superalloys. The next chapter talks about oxide-dispersion-strengthened superalloys. Next, the book discusses joining techniques for P/M superalloys and the practical applications of P/M superalloys. The title will be of great use to professionals in the materials manufacturing industry.
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 : Anshuman Patra
Publisher : CRC Press
ISBN 13 : 1000580555
Total Pages : 199 pages
Book Rating : 4.0/5 (5 download)
Download or read book Oxide Dispersion Strengthened Refractory Alloys written by Anshuman Patra and published by CRC Press. This book was released on 2022-05-12 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refractory metals such as W, Mo, Ta, Nb, and Re have immense potential for application in plasma-facing materials in nuclear reactors, defense materials, aviation counterweights, heating elements in furnaces, and so forth. This book presents a wide perspective of oxide dispersion strengthened refractory alloys fabrication and critical properties. It provides a comprehensive road map for an appropriate basis for alloy design, process parameter selection, fabrication route, and deformation behavior for oxide dispersion strengthened refractory alloys. It further covers achievement of application-oriented properties and critical process-regulating parameters for development of sustainable materials. Features: Covers development of oxide dispersion strengthened sustainable material to withstand high-temperature environments Describes stimulating application-oriented final mechanical properties Illustrates fabrication of alloys through effective route to achieve desired properties Presents in-depth explanation of deformation behavior at ambient and high temperatures Explores critical applications of the alloys in nuclear reactors, defense, and aviation sectors Oxide Dispersion Strengthened Refractory Alloys will be of interest to graduate students and researchers in high-temperature materials, mechanics, metallurgy, powder metallurgy, and physical metallurgy.
Author : Somayeh Pasebani
Publisher :
ISBN 13 :
Total Pages : 618 pages
Book Rating : 4.:/5 (928 download)
Download or read book Processing of Oxide Dispersion Strengthened Alloys Via Mechanical Alloying and Spark Plasma Sintering written by Somayeh Pasebani and published by . This book was released on 2014 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide dispersion strengthened (ODS) alloys are potential candidates to be used as high temperature structural materials in advanced nuclear and fossil energy systems because of highly stable microstructure and high creep strength. The high temperature properties of these alloys are caused by high density of dislocations and grain boundaries that are effectively pinned by ultrafine Y-Ti-O-enriched particles. The traditional processing method of ODS alloys is via mechanical alloying (MA) of high chromium content powder in combination with up to 0.5 wt.% Y2O3, followed by hot consolidation via hot extrusion or hot isostatic pressing. In the current study, Fe-based ODS and nickel-based ODS alloys are developed by using spark plasma sintering (SPS). Furthermore, in Fe-based ODS alloys or so called nanostructured ferritic steels, Y2O3 is replaced by equal atomic percent of La2O3. Then, the effects of alloying composition, processing parameters including milling parameters and sintering parameters, on the microstructure characteristics and mechanical properties of the milled powder and consolidated alloys were investigated and structure-properties were correlated. Several Fe-14Cr based alloys with varying compositions were processed. Microstructural characteristics of the consolidated alloys were examined via transmission electron microscopy and atom probe tomography, and mechanical properties were evaluated using microhardness testing, shear punch testing and mini-compression testing. Lanthanum oxide (0.5 wt.%) was added to Fe-14Cr leading for improving microstructural stability and mechanical properties mainly due to a high number density of La-Cr-O-enriched nanoclusters (NCs). The combined addition of La, Ti (1 wt.%) and Mo (0.3 wt.%) to the Fe-14Cr base composition further enhanced the microstructural stability and mechanical properties. The NCs enriched in Cr-Ti-La-O with a number density of 1.4×1024 m−3 were found in this alloy (sintered at 950 °C for 7 min) with a bimodal grain size distribution. Formation mechanism of these NCs can be explained through the concentrations and diffusion rates of the initial oxide species formed during the milling process and initial stages of sintering as well as the thermodynamics nucleation barrier and their enthalpy of formation. Milling provided solid solution, high density of dislocations, vacancies in the powder and facilitated the nucleation of NCs and enhanced the densification behavior by initiating sintering at lower temperatures while lowering the activation energy for both grain boundary and volume diffusion. Significant densification occurred at temperatures greater than 950 °C with a relative density higher than 98%. High mechanical strength values were achieved in room and high temperature are due to the combined strengthening mechanisms of work hardening, grain refinement, dispersion strengthening and solid solution strengthening. The microstructure of lanthana-bearing NFS was stable after self-ion irradiation at 500 °C up to 100 dpa. A notable irradiation hardening and enhanced dislocation activity occurred after irradiation. On the other hand, nickel-based oxide dispersion strengthened (ODS) alloys were developed by adding 1.2 wt.% Y2O3 to Ni-20Cr matrix via MA and SPS. Additionally, 5 wt.% Al2O3 was added to Ni-20Cr-1.2Y2O3 to provide composite strengthening. Higher sintering temperature led to higher fraction of recrystallized grains, higher hardness, density, and higher volume fraction of annealing twins. Adding 1.2 wt.% Y2O3 to the Ni-20Cr matrix significantly reduced the grain size. Higher compression yield stress at 800 °C for Ni-20Cr-1.2Y2O3-5Al2O3 alloy was attributed to a combined effect of dispersion and composite strengthening.
Author : Pascal Yvon
Publisher : Woodhead Publishing
ISBN 13 : 0081009127
Total Pages : 686 pages
Book Rating : 4.0/5 (81 download)
Download or read book Structural Materials for Generation IV Nuclear Reactors written by Pascal Yvon and published by Woodhead Publishing. This book was released on 2016-08-27 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Operating at a high level of fuel efficiency, safety, proliferation-resistance, sustainability and cost, generation IV nuclear reactors promise enhanced features to an energy resource which is already seen as an outstanding source of reliable base load power. The performance and reliability of materials when subjected to the higher neutron doses and extremely corrosive higher temperature environments that will be found in generation IV nuclear reactors are essential areas of study, as key considerations for the successful development of generation IV reactors are suitable structural materials for both in-core and out-of-core applications. Structural Materials for Generation IV Nuclear Reactors explores the current state-of-the art in these areas. Part One reviews the materials, requirements and challenges in generation IV systems. Part Two presents the core materials with chapters on irradiation resistant austenitic steels, ODS/FM steels and refractory metals amongst others. Part Three looks at out-of-core materials. Structural Materials for Generation IV Nuclear Reactors is an essential reference text for professional scientists, engineers and postgraduate researchers involved in the development of generation IV nuclear reactors. Introduces the higher neutron doses and extremely corrosive higher temperature environments that will be found in generation IV nuclear reactors and implications for structural materials Contains chapters on the key core and out-of-core materials, from steels to advanced micro-laminates Written by an expert in that particular area
Author : Chen Dai
Publisher :
ISBN 13 : 9781339543413
Total Pages : pages
Book Rating : 4.5/5 (434 download)
Download or read book Oxide Dispersion Techniques for 316L Stainless Steel written by Chen Dai and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxide dispersion strengthened (ODS) alloys have been studied extensively, in part as a response to the need to develop high temperature materials that are required for energy efficient systems. ODS stainless steels, in particular, are of technological interest because of their high ductility and high strength at elevated temperatures, which when combined with their resistance to corrosion, render them ideal for many applications that require extreme performance. Survey of the published literature reveals that efforts have been devoted to incorporate specific strengthening mechanisms in order to meet demanding performance criteria for ODS alloys. Through the course of this dissertation, several novel approaches were made to distribute fine, thermally stable oxide phases in 316L stainless steel matrix: cryomilling, water atomization, and melt spinning. Microstructural features, mechanical properties and sintering behavior of the fabricated materials were investigated to understand the mechanisms that govern the evolution of a composite microstructure during the processing routes, and to establish the influence of the composite material structure on the strength and thermal stability at elevated temperature. Results from the cryomilling experiments showed that a minimum grain size could be reached within 12 hours of milling. The spatial distribution of the oxide dispersoids was found to be dependent of the type of oxide particle used and on the evolution of internal surfaces during milling. Microstructural inspection of water atomized and sintered powder reveals the presence of evenly distributed sub-micrometric oxides in 316L. A series of oxidation experiments were also conducted on melt spun ribbons, which were selected as a simplified model system for water atomization. These experiments were performed in order to determine the mechanisms that govern the formation of oxides and the effect of sintering temperature on the oxide growth. Experimental and theoretical analysis show that the yttrium-containing oxides are the most thermodynamically and kinetically stable oxide phases formed in the Fe-Cr-(Si)-Y alloy system studied. The critical processing parameters for each processing techniques are discussed in reference to the properties of the material. The versatility and potential challenges of the individual techniques are also described and compared.
Author : G. Mervin Ault
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.F/5 ( download)
Download or read book Technical Applications for Oxide-dispersion Strengthened Materials written by G. Mervin Ault and published by . This book was released on 1966 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Odette
Publisher : Newnes
ISBN 13 : 012397349X
Total Pages : 673 pages
Book Rating : 4.1/5 (239 download)
Download or read book Structural Alloys for Nuclear Energy Applications written by Robert Odette and published by Newnes. This book was released on 2019-08-15 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-performance alloys that can withstand operation in hazardous nuclear environments are critical to presentday in-service reactor support and maintenance and are foundational for reactor concepts of the future. With commercial nuclear energy vendors and operators facing the retirement of staff during the coming decades, much of the scholarly knowledge of nuclear materials pursuant to appropriate, impactful, and safe usage is at risk. Led by the multi-award winning editorial team of G. Robert Odette (UCSB) and Steven J. Zinkle (UTK/ORNL) and with contributions from leaders of each alloy discipline, Structural Alloys for Nuclear Energy Applications aids the next generation of researchers and industry staff developing and maintaining steels, nickel-base alloys, zirconium alloys, and other structural alloys in nuclear energy applications. This authoritative reference is a critical acquisition for institutions and individuals seeking state-of-the-art knowledge aided by the editors’ unique personal insight from decades of frontline research, engineering and management. Focuses on in-service irradiation, thermal, mechanical, and chemical performance capabilities. Covers the use of steels and other structural alloys in current fission technology, leading edge Generation-IV fission reactors, and future fusion power reactors. Provides a critical and comprehensive review of the state-of-the-art experimental knowledge base of reactor materials, for applications ranging from engineering safety and lifetime assessments to supporting the development of advanced computational models.
Author : I. Minkoff
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (41 download)
Download or read book The Physical Metallurgy of Cast Iron written by I. Minkoff and published by John Wiley & Sons. This book was released on 1983 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
