Transmission Electron Microscopy Study In-situ of Radiation-induced Defects in Copper at Elevated Temperatures

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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Transmission Electron Microscopy Study In-situ of Radiation-induced Defects in Copper at Elevated Temperatures by :

Download or read book Transmission Electron Microscopy Study In-situ of Radiation-induced Defects in Copper at Elevated Temperatures written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrons and high-energy ions incident upon a solid can initiate a displacement collision cascade of lattice atoms resulting in localized regions within the solid containing a high concentration of interstitial and vacancy point defects. These point defects can collapse into various types of dislocation loops and stacking fault tetrahedra (SFT) large enough that their lattice strain fields are visible under diffraction-contrast imaging using a Transmission Electron Microscope (TEM). The basic mechanisms driving the collapse of point defects produced in collision cascades is investigated in situ with TEM for fcc-Cu irradiated with heavy (100 keV Kr) ions at elevated temperature. The isothermal stability of these clusters is also examined in situ. Areal defect yields were observed to decrease abruptly for temperatures greater than 300 C. This decrease in defect yield is attributed to a proportional decrease in the probability of collapse of point defects into clusters. The evolution of the defect density under isothermal conditions appears to be influenced by three different rate processes active in the decline of the total defect density. These rate constants can be attributed to differences in the stability of various types of defect clusters and to different loss mechanisms. Based upon observed stabilities, estimations for the average binding enthalpies of vacancies to SFT are calculated for copper.

Transmission Electron Microscopy Study of Cascade Collapse in Copper During In-situ Ion-irradiation at Elevated Temperatures

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ISBN 13 :
Total Pages : 7 pages
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Book Synopsis Transmission Electron Microscopy Study of Cascade Collapse in Copper During In-situ Ion-irradiation at Elevated Temperatures by :

Download or read book Transmission Electron Microscopy Study of Cascade Collapse in Copper During In-situ Ion-irradiation at Elevated Temperatures written by and published by . This book was released on 1998 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic mechanisms driving the collapse of point defects produced in collision cascades are investigated by transmission electron microscope (TEM) characterization of defect microstructure produced in fcc-Cu irradiated with low-fluences of heavy (100 keV Kr) ions at elevated temperature (23--600 C). Areal defect yields are determined from direct TEM observation of the total defect production integrated over the duration of the in-situ ion-irradiation. They are unequivocally demonstrated to decrease with increasing lattice temperature. This decrease in defect yield indicates a proportional decrease in the probability of collapse of cascade regions into defects of size where visible contrast is produced in a TEM.

In-situ Transmission Electron Microscopy Study of Ion-irradiated Copper

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ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis In-situ Transmission Electron Microscopy Study of Ion-irradiated Copper by :

Download or read book In-situ Transmission Electron Microscopy Study of Ion-irradiated Copper written by and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics which drive cascade formation and subsequent collapse into point-defect clusters is investigated by analyzing the microstructure produced in situ by low fluence 100 keV Kr ion irradiations of fcc-Cu over a wide temperature range (18-873 K). The yield of collapsed point-defect clusters is demonstrated unequivocally to be temperature dependent, remaining approximately constant up to lattice temperatures of 573 K and then abruptly decreasing with increasing temperature. This drop in yield is not caused by defect loss during or following ion irradiation. This temperature dependence can be explained by a thermal spike effect. These in-situ yield measurements are compared to previous ex-situ yield measurements in fcc-Ni and bcc-Mo.

Transmission Electron Microscopy Study of Radiation Induced Defects in the High Temperature Superconductor YBa2Cu3O---{delta}

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ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.:/5 (636 download)

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Book Synopsis Transmission Electron Microscopy Study of Radiation Induced Defects in the High Temperature Superconductor YBa2Cu3O---{delta} by : Marcus Frischherz

Download or read book Transmission Electron Microscopy Study of Radiation Induced Defects in the High Temperature Superconductor YBa2Cu3O---{delta} written by Marcus Frischherz and published by . This book was released on 1992 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterisation of Radiation Damage by Transmission Electron Microscopy

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Publisher : CRC Press
ISBN 13 : 1420034642
Total Pages : 233 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Characterisation of Radiation Damage by Transmission Electron Microscopy by : M.L Jenkins

Download or read book Characterisation of Radiation Damage by Transmission Electron Microscopy written by M.L Jenkins and published by CRC Press. This book was released on 2000-11-21 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Characterization of Radiation Damage by Transmission Electron Microscopy details the electron microscopy methods used to investigate complex and fine-scale microstructures, such as those produced by fast-particle irradiation of metals or ion implantation of semiconductors. The book focuses on the methods used to characterize small point-defect clus

ERDA Energy Research Abstracts

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ISBN 13 :
Total Pages : 646 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ERDA Energy Research Abstracts

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ISBN 13 :
Total Pages : 962 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Radiation-induced Changes in Microstructure

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Publisher : ASTM International
ISBN 13 : 0803109628
Total Pages : 919 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Radiation-induced Changes in Microstructure by : F. A. Garner

Download or read book Radiation-induced Changes in Microstructure written by F. A. Garner and published by ASTM International. This book was released on 1987 with total page 919 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microstructure Evolution During Irradiation: Volume 439

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ISBN 13 :
Total Pages : 770 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Microstructure Evolution During Irradiation: Volume 439 by : Ian M. Robertson

Download or read book Microstructure Evolution During Irradiation: Volume 439 written by Ian M. Robertson and published by . This book was released on 1997-06-25 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book from MRS discusses the evolution of a material's microstructure as a result of its interaction with energetic particles such as ions, neutrons or electrons. The book is inter-disciplinary and emphasizes all classes of materials including metals, intermetallic compounds, ceramics, polymers, superconductors, semiconductors and insulators. A strong focus is placed on experimental techniques for measuring and quantifying damage and microstructure changes, and on computer simulation techniques for predicting and understanding this phenomena. Topics include: ion-implantation damage in semiconductors; radiation damage in metals; radiation damage in ceramics; radiation effects in polymers and beam-induced effects.

Scientific and Technical Aerospace Reports

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ISBN 13 :
Total Pages : 836 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nuclear Science Abstracts

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ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy Research Abstracts

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ISBN 13 :
Total Pages : 782 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comprehensive Nuclear Materials

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Publisher : Elsevier
ISBN 13 : 0081028660
Total Pages : 4871 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Comprehensive Nuclear Materials by :

Download or read book Comprehensive Nuclear Materials written by and published by Elsevier. This book was released on 2020-07-22 with total page 4871 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials in a nuclear environment are exposed to extreme conditions of radiation, temperature and/or corrosion, and in many cases the combination of these makes the material behavior very different from conventional materials. This is evident for the four major technological challenges the nuclear technology domain is facing currently: (i) long-term operation of existing Generation II nuclear power plants, (ii) the design of the next generation reactors (Generation IV), (iii) the construction of the ITER fusion reactor in Cadarache (France), (iv) and the intermediate and final disposal of nuclear waste. In order to address these challenges, engineers and designers need to know the properties of a wide variety of materials under these conditions and to understand the underlying processes affecting changes in their behavior, in order to assess their performance and to determine the limits of operation. Comprehensive Nuclear Materials, Second Edition, Seven Volume Set provides broad ranging, validated summaries of all the major topics in the field of nuclear material research for fission as well as fusion reactor systems. Attention is given to the fundamental scientific aspects of nuclear materials: fuel and structural materials for fission reactors, waste materials, and materials for fusion reactors. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with a ready reference resource of information. Most of the chapters from the first Edition have been revised and updated and a significant number of new topics are covered in completely new material. During the ten years between the two editions, the challenge for applications of nuclear materials has been significantly impacted by world events, public awareness, and technological innovation. Materials play a key role as enablers of new technologies, and we trust that this new edition of Comprehensive Nuclear Materials has captured the key recent developments. Critically reviews the major classes and functions of materials, supporting the selection, assessment, validation and engineering of materials in extreme nuclear environments Comprehensive resource for up-to-date and authoritative information which is not always available elsewhere, even in journals Provides an in-depth treatment of materials modeling and simulation, with a specific focus on nuclear issues Serves as an excellent entry point for students and researchers new to the field

The Influence of Radiation-induced Lattice Defects on the Fatigue Properties of Copper Single Crystals

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ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis The Influence of Radiation-induced Lattice Defects on the Fatigue Properties of Copper Single Crystals by : R. B. Adamson

Download or read book The Influence of Radiation-induced Lattice Defects on the Fatigue Properties of Copper Single Crystals written by R. B. Adamson and published by . This book was released on 1994 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ERDA Research Abstracts

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ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis ERDA Research Abstracts by : United States. Energy Research and Development Administration

Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

An in Situ Transmission Electron Microscopy Study of the Thermalstability of Near-surface Microstructures Induced by Deep Rolling Andlaser-shock Peening

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis An in Situ Transmission Electron Microscopy Study of the Thermalstability of Near-surface Microstructures Induced by Deep Rolling Andlaser-shock Peening by :

Download or read book An in Situ Transmission Electron Microscopy Study of the Thermalstability of Near-surface Microstructures Induced by Deep Rolling Andlaser-shock Peening written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical surface treatments are known to be effective at improving the fatigue resistance of metallic alloys at elevated temperatures ((almost equal to)550-600 C), even though the near-surface compressive residual stress fields have been annealed out. We have investigated the thermal stability of near-surface microstructures induced by deep rolling and laser-shock peening in an austentic stainless steel (AISI 304) and a titanium alloy (Ti-6Al-4V) using in situ hot-stage transmission electron microscopy. It is found that the improvements in fatigue resistance at elevated temperature are related to the high-temperature stability of the work-hardened near-surface microstructure in each case.

Physics Briefs

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ISBN 13 :
Total Pages : 1332 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Physics Briefs by :

Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt: