A Transmission Electron Microscope Study of Fusion Environment Radiation Damage in Iron and Iron-chromium Alloys PDF Download
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Author: Linda Louise Schiestle Horton
Publisher:
ISBN:
Category : Chromium-iron alloys
Languages : en
Pages : 528
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Author: Linda Louise Schiestle Horton
Publisher:
ISBN:
Category : Chromium-iron alloys
Languages : en
Pages : 528
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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A transmission electron microscopy study of radiation damage microstructures in iron and iron-chromium alloys has been performed. This study consisted of both qualitative and quantitative characterization of the dislocation and cavity microstructures, including determination of vacancy/interstitial character and Burgers vectors for dislocation loops and analysis of the cavity morphology. The effects of irradiation temperature, fluence, helium implantation, and chromium content were investigated. Neutron irradiation (iron specimens, 1 dpa, 455 to 1000 K) and triple-beam ion irradiation (Fe-10% Cr specimens, 10 dpa, 725 to 950 K; Fe-10% Cr specimens, 850 K, 0.3 to 100 dpa; and Fe, Fe-5% Cr, Fe-10% Cr specimens, 850 K, 10 dpa) were employed. In the triple-beam ion irradiation procedure, simultaneous bombardment with 4 MeV Fe/sup + +/ ions and energetic He/sup +/ and D2/sup +/ ions was used to simulate the fusion environment (10 at. ppM He/dpa and 41 at. ppM D/dpa). In addition, single-beam 4 MeV Fe/sup + +/ ion irradiations of Fe-10% Cr both with and without pre-injection of helium and deuterium were performed.
Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 872
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Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 944
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Author: N. H. Packan
Publisher: ASTM International
ISBN: 0803112661
Category : Materials
Languages : en
Pages : 679
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Book Description
Annotation Effects of Radiation on Materials: Fourteenth International Symposium was presented at Andover, MA, June 1988. The symposium was sponsored by ASTM Committee E-10 on Nuclear Technology and Applications. The papers from the first three days of the symposium appear in the two volumes of this publication. Volume I encompasses radiation damage- induced microstructures; point defect, solute, and gas atom effects; atomic-level measurement techniques; and applications of theory. Volume II includes mechanical behavior, all papers dealing with pressure-vessel steels, breeder reactor components, dosimetry, and nuclear fuels. The fourth day of the symposium was devoted to the single topic of reduced-activation materials (see TK9204). The two volumes are separately sold at $127 and $128 respectively; each is independently indexed. Annotation copyrighted by Book News, Inc., Portland, OR.
Author: F. A. Garner
Publisher: ASTM International
ISBN: 9780803104501
Category : Technology & Engineering
Languages : en
Pages : 537
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Author: R. K. Nanstad
Publisher: ASTM International
ISBN: 080312614X
Category : Materials
Languages : en
Pages : 1135
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Author: Carolyn A. Tomchik
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Iron-chromium alloys are used as a model to study the microstructural evolution of defects in irradiated structural steel components of a nuclear reactor. We examine the effects of temperature and chromium concentration on the defect evolution and segregation behavior in the early stages of damage. In situ irradiations are conducted in a transmission electron microscope (TEM) at 300°C and 450°C with 150keV iron ions in single crystal Fe14Cr and Fe19Cr bicrystal to doses of 2E15 ions/cm^2. The microstructures resulting from annealing and irradiation of the alloy are characterized by analysis of TEM micrographs and diffraction patterns and compared with those of irradiated pure iron. We found the irradiation temperature to have little effect on the microstructural development. We also found that the presence of chromium in the sample leads to defect populations with small average loop size and no extended or nested loop structures, in contrast to the populations of large extended loops seen in irradiated pure iron. A very weak dependence was found on the specific chromium content of the alloy. Chromium was shown to suppress defect growth by inhibiting defect mobility in the alloy. While defects in pure iron are highly mobile and able to grow, those in the FeCr alloys remained small and relatively motionless due to the pinning effect of the chromium.
Author: F. A. Garner
Publisher: ASTM International
ISBN: 0803109628
Category : Conferences
Languages : en
Pages : 919
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 640
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