Positron Annihilation Spectroscopy Of Nanostructural Features In Model Reactor Pressure Vessel Steels

Download Positron Annihilation Spectroscopy Of Nanostructural Features In Model Reactor Pressure Vessel Steels full books in PDF, epub, and Kindle. Read online Positron Annihilation Spectroscopy Of Nanostructural Features In Model Reactor Pressure Vessel Steels ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Positron Annihilation Spectroscopy of Nanostructural Features in Model Reactor Pressure Vessel Steels

Author : P. Asoka-Kumar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation Spectroscopy of Nanostructural Features in Model Reactor Pressure Vessel Steels by : P. Asoka-Kumar

Download or read book Positron Annihilation Spectroscopy of Nanostructural Features in Model Reactor Pressure Vessel Steels written by P. Asoka-Kumar and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Irradiation embrittlement in nuclear reactor pressure vessel steels results from the formation of a high number density of nanometer sized copper rich precipitates and sub-nanometer defect-solute clusters. We present positron annihilation spectroscopy (PAS) results to characterize the compositions and magnetic character of these defects in model A533B reactor pressure vessel steels. The results confirm the presence of copper-rich precipitates after irradiation. The measured orbital electron momentum spectra indicate the precipitates are alloyed with Mn and Ni. The copper precipitates larger than R {approx} 1.2 nm (from SANS measurements) are non-magnetic, which limits the possible Fe content of the precipitates to at most a few %. Notably, large vacancy clusters observed in neutron irradiated Fe-Cu alloys were not observed in the steels after irradiation.

Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of Nanostructural Features in Irradiated Fe-Cu-Mn Alloys

Download Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of Nanostructural Features in Irradiated Fe-Cu-Mn Alloys PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of Nanostructural Features in Irradiated Fe-Cu-Mn Alloys by :

Download or read book Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of Nanostructural Features in Irradiated Fe-Cu-Mn Alloys written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation embrittlement of nuclear reactor pressure vessel steels results from a high number density of nanometer sized Cu-Mn-Ni rich precipitates (CRPs) and sub-nanometer matrix features, thought to be vacancy-solute cluster complexes (VSC). However, questions exist regarding both the composition of the precipitates and the defect character and composition of the matrix features. We present results of positron annihilation spectroscopy (PAS) and small angle neutron scattering (SANS) characterization of irradiated and thermally aged Fe-Cu and Fe-Cu-Mn alloys. These complementary techniques provide insight into the composition and character of both types of nanoscale features. The SANS measurements indicate populations of CRPs and VSCs in both alloys. The CRPs are coarser in the Fe-Cu alloy and the number densities of CRP and VSC increase with the addition of Mn. The PAS involved measuring both the positron lifetimes and the Doppler broadened annihilation spectra in the high momentum region to provide elemental sensitivity at the annihilation site. The spectra in Fe-Cu-Mn specimens thermally aged to peak hardness at 450 C and irradiated at 288 C are nearly identical to elemental Cu. Positron lifetime and spectrum measurements in Fe-Cu specimens irradiated at 288 C clearly show the existence of long lifetime ((almost equal to)500 ps) open volume defects, which also contain Cu. Thus the SANS and PAS provide a self-consistent picture of nanostructures composed of CRPs and VSCs and tend to discount high Fe concentrations in the CRPs.

Characterization of Nanostructural Features in Irradiated Reactor Pressure Vessel Model Alloys

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

DOWNLOAD NOW!

Book Synopsis Characterization of Nanostructural Features in Irradiated Reactor Pressure Vessel Model Alloys by :

Download or read book Characterization of Nanostructural Features in Irradiated Reactor Pressure Vessel Model Alloys written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Irradiation embrittlement in nuclear reactor pressure vessel steels results from the formation of a high number density of nanometer-sized copper rich precipitates and sub-nanometer defect-solute clusters. We present results of small angle neutron scattering (SANS) and positron annihilation spectroscopy (PAS) characterization of the nanostructural features formed in binary and ternary Fe-Cu-Mn alloys irradiated at (almost equal to)290 C. These complementary techniques provide insight into the composition and character of both types of nanoscale features. The SANS measurements indicate populations of copper-manganese precipitates and smaller vacancy-copper-manganese clusters. The PAS characterization, including both Doppler broadening and positron lifetime measurements, indicates the presence of essentially defect-free Cu precipitates in the Fe-Cu-Mn alloy and vacancy-copper clusters in the Fe-Cu alloy. Thus the SANS and PAS provide a self-consistent picture of nanostructures composed of copper-rich precipitates and vacancy solute cluster complexes and tend to discount high Fe concentrations in the CRPs.

Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of the Effect of Mn on the Nanostructural Features Formed in Irradiated Fe-Cu-Mn Alloys

Download Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of the Effect of Mn on the Nanostructural Features Formed in Irradiated Fe-Cu-Mn Alloys PDF Online Free

Author : R. H. Howell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of the Effect of Mn on the Nanostructural Features Formed in Irradiated Fe-Cu-Mn Alloys by : R. H. Howell

Download or read book Positron Annihilation Spectroscopy and Small Angle Neutron Scattering Characterization of the Effect of Mn on the Nanostructural Features Formed in Irradiated Fe-Cu-Mn Alloys written by R. H. Howell and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The size, number density and composition of the nanometer defects responsible for the hardening and embrittlement in irradiated Fe-0.9wt.% Cu and Fe-0.9wt.% Cu-1.0wt% Mn model reactor pressure vessel alloys were measured using small angle neutron scattering and positron annihilation spectroscopy. These alloys were irradiated at 290 C to relatively low neutron fluences (E> 1 MeV, 6.0 x 10{sup 20} to 4.0 x 10{sup 21} n/m{sup 2}) in order to study the effect of manganese on the nucleation and growth of copper rich precipitates and secondary defect features. Copper rich precipitates were present in both alloys following irradiation. The Fe-Cu-Mn alloy had smaller precipitates and a larger number density of precipitates, suggesting Mn segregation at the iron matrix-precipitate interface which reduces the interfacial energy and in turn the driving force for coarsening. Mn also retards the precipitation kinetics and inhibits large vacancy cluster formation, suggesting a strong Mn-vacancy interaction which reduces radiation enhanced diffusion.

Positron Annihilation

Author : Toshio Hyodo
Publisher :
ISBN 13 :
Total Pages : 588 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation by : Toshio Hyodo

Download or read book Positron Annihilation written by Toshio Hyodo and published by . This book was released on 2004 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is no doubt that, when it comes to the study of the structures and defects of materials, there is presently no technique that rivals positron annihilation. The increasing demands for higher accuracy and reliability provide a constant stimulus to the field, and the present work presents the newest and most important scientific discoveries made in the field of positron annihilation. Many important new results concerning positron and positronium studies of nano-materials, defects, porous materials, low-k dielectrics, polymers, liquids, atomic physics and new instrumentation are reported in the present contributions; presented by experts from all over the world. There can be no better way of keeping up with this rapidly advancing field.

Irradiation Embrittlement of Reactor Pressure Vessels (RPVs) in Nuclear Power Plants

Author : Naoki Soneda
Publisher : Elsevier
ISBN 13 : 0857096478
Total Pages : 437 pages
Book Rating : 4.8/5 (57 download)

DOWNLOAD NOW!

Book Synopsis Irradiation Embrittlement of Reactor Pressure Vessels (RPVs) in Nuclear Power Plants by : Naoki Soneda

Download or read book Irradiation Embrittlement of Reactor Pressure Vessels (RPVs) in Nuclear Power Plants written by Naoki Soneda and published by Elsevier. This book was released on 2014-09-01 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactor Pressure Vessels (RPVs) contain the fuel and therefore the reaction at the heart of nuclear power plants. They are a life-determining structural component: if they suffer serious damage, the continued operation of the plant is in jeopardy. This book critically reviews irradiation embrittlement, the main degradation mechanism affecting RPV steels, and mitigation routes for managing the RPV lifetime. Part I reviews RPV design and fabrication in different countries, with an emphasis on the materials required, their important properties, and manufacturing technologies. Part II then considers RVP embrittlement in operational nuclear power plants using different reactors. Chapters are devoted to embrittlement in light-water reactors, including WWER-type reactors and Magnox reactors. Finally, Part III presents techniques for studying embrittlement, including irradiation simulation techniques, microstructural characterisation techniques, and probabilistic fracture mechanics. Irradiation Embrittlement of Reactor Pressure Vessels (RPVs) in Nuclear Power Plants provides a thorough review of an issue that is central to the safety of nuclear power generation. The book includes contributions from an international team of experts, and will be a useful resource for nuclear plant operators and managers, relevant regulatory and safety bodies, nuclear metallurgists and other academics in this field Discusses reactor pressure vessel (RPV) design and the effect irradiation embrittlement can have, the main degradation mechanism affecting RPVs Examines embrittlement processes in RPVs in different reactor types, as well as techniques for studying RPV embrittlement

Structural Alloys for Nuclear Energy Applications

Author : Robert Odette
Publisher : Newnes
ISBN 13 : 012397349X
Total Pages : 673 pages
Book Rating : 4.1/5 (239 download)

DOWNLOAD NOW!

Book Synopsis Structural Alloys for Nuclear Energy Applications by : Robert Odette

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.

Understanding and Mitigating Ageing in Nuclear Power Plants

Author : Philip G Tipping
Publisher : Elsevier
ISBN 13 : 1845699955
Total Pages : 953 pages
Book Rating : 4.8/5 (456 download)

DOWNLOAD NOW!

Book Synopsis Understanding and Mitigating Ageing in Nuclear Power Plants by : Philip G Tipping

Download or read book Understanding and Mitigating Ageing in Nuclear Power Plants written by Philip G Tipping and published by Elsevier. This book was released on 2010-10-26 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant life management (PLiM) is a methodology focussed on the safety-first management of nuclear power plants over their entire lifetime. It incorporates and builds upon the usual periodic safety reviews and licence renewals as part of an overall framework designed to assist plant operators and regulators in assessing the operating conditions of a nuclear power plant, and establishing the technical and economic requirements for safe, long-term operation. Understanding and mitigating ageing in nuclear power plants critically reviews the fundamental ageing-degradation mechanisms of materials used in nuclear power plant structures, systems and components (SSC), along with their relevant analysis and mitigation paths, as well as reactor-type specific PLiM practices. Obsolescence and other less obvious ageing-related aspects in nuclear power plant operation are also examined in depth. Part one introduces the reader to the role of nuclear power in the global energy mix, and the importance and relevance of plant life management for the safety regulation and economics of nuclear power plants. Key ageing degradation mechanisms and their effects in nuclear power plant systems, structures and components are reviewed in part two, along with routes taken to characterise and analyse the ageing of materials and to mitigate or eliminate ageing degradation effects. Part three reviews analysis, monitoring and modelling techniques applicable to the study of nuclear power plant materials, as well as the application of advanced systems, structures and components in nuclear power plants. Finally, Part IV reviews the particular ageing degradation issues, plant designs, and application of plant life management (PLiM) practices in a range of commercial nuclear reactor types. With its distinguished international team of contributors, Understanding and mitigating ageing in nuclear power plants is a standard reference for all nuclear plant designers, operators, and nuclear safety and materials professionals and researchers. Introduces the reader to the role of nuclear power in the global energy mix Reviews the fundamental ageing-degradation mechanisms of materials used in nuclear power plant structures, systems and components (SSC) Examines topics including elimination of ageing effects, plant design, and the application of plant life management (PLiM) practices in a range of commercial nuclear reactor types

Positron annihilation study of radiation damage in neutron irradiated reactor pressure vessel steels

Author : Gerhard Brauer
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (748 download)

DOWNLOAD NOW!

Book Synopsis Positron annihilation study of radiation damage in neutron irradiated reactor pressure vessel steels by : Gerhard Brauer

Download or read book Positron annihilation study of radiation damage in neutron irradiated reactor pressure vessel steels written by Gerhard Brauer and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Annealing studies of neutron irradiated reactor pressure vessel steels by positron annihilation

Author : Gerhard Brauer
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (75 download)

DOWNLOAD NOW!

Book Synopsis Annealing studies of neutron irradiated reactor pressure vessel steels by positron annihilation by : Gerhard Brauer

Download or read book Annealing studies of neutron irradiated reactor pressure vessel steels by positron annihilation written by Gerhard Brauer and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Investigation of Neutron Irradiated Reactor Pressure Vessel Steel by Positron Annihilation and Electron Microscopy

Author : RV. Nandedkar
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (125 download)

DOWNLOAD NOW!

Book Synopsis Investigation of Neutron Irradiated Reactor Pressure Vessel Steel by Positron Annihilation and Electron Microscopy by : RV. Nandedkar

Download or read book Investigation of Neutron Irradiated Reactor Pressure Vessel Steel by Positron Annihilation and Electron Microscopy written by RV. Nandedkar and published by . This book was released on 1987 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron lifetime, annihilation line shape, and electron microscopic measurements have been carried out on neutron irradiated pressure vessel steel (HSST Plate 03) meeting ASTM A533-B (Unified Numbering System [UNS] K12539). The positron annihilation parameters for specimens irradiated at 423 K to a dose of 1.5 x 1018 n/cm2 are found to decrease sharply during the post-irradiation annealing interval, 473 to 623 K. This correlates well with the stage seen in the recovery of Vickers hardness. On the basis of known evidence for carbon migration in ?-iron and the interpretation of present results, enhancement and recovery of radiation hardening have been qualitatively understood in terms of formation and dissolution of carbon decorated vacancy complexes.

On the Character of Nano-scale Features in Reactor Pressure Vessel Steels Under Neutron Irradiation

Author : Brian D. Wirth
Publisher :
ISBN 13 :
Total Pages : 477 pages
Book Rating : 4.:/5 (423 download)

DOWNLOAD NOW!

Book Synopsis On the Character of Nano-scale Features in Reactor Pressure Vessel Steels Under Neutron Irradiation by : Brian D. Wirth

Download or read book On the Character of Nano-scale Features in Reactor Pressure Vessel Steels Under Neutron Irradiation written by Brian D. Wirth and published by . This book was released on 1998 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High-Performance Computing Applications in Numerical Simulation and Edge Computing

Author : Changjun Hu
Publisher : Springer Nature
ISBN 13 : 9813299878
Total Pages : 247 pages
Book Rating : 4.8/5 (132 download)

DOWNLOAD NOW!

Book Synopsis High-Performance Computing Applications in Numerical Simulation and Edge Computing by : Changjun Hu

Download or read book High-Performance Computing Applications in Numerical Simulation and Edge Computing written by Changjun Hu and published by Springer Nature. This book was released on 2019-08-28 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the referred proceedings of two workshops held at the 32nd ACM International Conference on Supercomputing, ACM ICS 2018, in Beijing, China, in June 2018. This volume presents the papers that have been accepted for the following workshops: Second International Workshop on High Performance Computing for Advanced Modeling and Simulation in Nuclear Energy and Environmental Science, HPCMS 2018, and First International Workshop on HPC Supported Data Analytics for Edge Computing, HiDEC 2018. The 20 full papers presented during HPCMS 2018 and HiDEC 2018 were carefully reviewed and selected from numerous submissions. The papers reflect such topics as computing methodologies; parallel algorithms; simulation types and techniques; machine learning.

Positron Annihilation Studies on Neutron Irradiated Pressure Vessel Steels

Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (475 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation Studies on Neutron Irradiated Pressure Vessel Steels by :

Download or read book Positron Annihilation Studies on Neutron Irradiated Pressure Vessel Steels written by and published by . This book was released on 1987 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Convergence of Knowledge, Technology and Society

Author : Mihail C. Roco
Publisher : Springer Science & Business Media
ISBN 13 : 3319022040
Total Pages : 603 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!

Book Synopsis Convergence of Knowledge, Technology and Society by : Mihail C. Roco

Download or read book Convergence of Knowledge, Technology and Society written by Mihail C. Roco and published by Springer Science & Business Media. This book was released on 2014-01-28 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume aims to document the most important worldwide accomplishments in converging knowledge and technology, including converging platforms, methods of convergence, societal implications, and governance in the last ten years. Convergence in knowledge, technology, and society is the accelerating, transformative interaction among seemingly distinct scientific disciplines, technologies, and communities to achieve mutual compatibility, synergism, and integration, and through this process to create added value for societal benefit. It is a movement that is recognized by scientists and thought leaders around the world as having the potential to provide far-reaching solutions to many of today’s complex knowledge, technology, and human development challenges. Four essential and interdependent convergence platforms of human activity are defined in the first part of this report: nanotechnology-biotechnology-information technology and cognitive science (“NBIC”) foundational tools; Earth-scale environmental systems; human-scale activities; and convergence methods for societal-scale activities. The report then presents the main implications of convergence for human physical potential, cognition and communication, productivity and societal outcomes, education and physical infrastructure, sustainability, and innovative and responsible governance. As a whole, the report presents a new model for convergence. To effectively take advantage of this potential, a proactive governance approach is suggested. The study identifies an international opportunity to develop and apply convergence for technological, economic, environmental, and societal benefits. The panel also suggests an opportunity in the United States for implementing a program aimed at focusing disparate R and D energies into a coherent activity - a "Societal Convergence Initiative”. This study received input from leading academic, industry, government, and NGO experts from the United States, Latin America, Europe, Asia, and Australia.

Positron Annihilation and Mössbauer Studies of Neutron Irradiated Reactor Pressure Vessel Steels

Author : Gerhard Brauer
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (876 download)

DOWNLOAD NOW!

Book Synopsis Positron Annihilation and Mössbauer Studies of Neutron Irradiated Reactor Pressure Vessel Steels by : Gerhard Brauer

Download or read book Positron Annihilation and Mössbauer Studies of Neutron Irradiated Reactor Pressure Vessel Steels written by Gerhard Brauer and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Gaseous Hydrogen Embrittlement of Materials in Energy Technologies

Author : Richard P Gangloff
Publisher : Elsevier
ISBN 13 : 0857095374
Total Pages : 521 pages
Book Rating : 4.8/5 (57 download)

DOWNLOAD NOW!

Book Synopsis Gaseous Hydrogen Embrittlement of Materials in Energy Technologies by : Richard P Gangloff

Download or read book Gaseous Hydrogen Embrittlement of Materials in Energy Technologies written by Richard P Gangloff and published by Elsevier. This book was released on 2012-01-19 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many modern energy systems are reliant on the production, transportation, storage, and use of gaseous hydrogen. The safety, durability, performance and economic operation of these systems is challenged by operating-cycle dependent degradation by hydrogen of otherwise high performance materials. This important two-volume work provides a comprehensive and authoritative overview of the latest research into managing hydrogen embrittlement in energy technologies. Volume 2 is divided into three parts, part one looks at the mechanisms of hydrogen interactions with metals including chapters on the adsorption and trap-sensitive diffusion of hydrogen and its impact on deformation and fracture processes. Part two investigates modern methods of modelling hydrogen damage so as to predict material-cracking properties. The book ends with suggested future directions in science and engineering to manage the hydrogen embrittlement of high-performance metals in energy systems. With its distinguished editors and international team of expert contributors, Volume 2 of Gaseous hydrogen embrittlement of materials in energy technologies is an invaluable reference tool for engineers, designers, materials scientists, and solid mechanicians working with safety-critical components fabricated from high performance materials required to operate in severe environments based on hydrogen. Impacted technologies include aerospace, petrochemical refining, gas transmission, power generation and transportation. Summarises the wealth of recent research on understanding and dealing with the safety, durability, performance and economic operation of using gaseous hydrogen at high pressure Chapters review mechanisms of hydrogen embrittlement including absorption, diffusion and trapping of hydrogen in metals Analyses ways of modelling hydrogen-induced damage and assessing service life