Download or read book The Nature and Annealing Behavior of Irradiation Damage in Molybdenum written by B. L. Eyre and published by . This book was released on 1965 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural defects are observed using transmission electron microscope techniques in molybdenum after neutron or fission fragment irradiation at about 60 C. There is no detectable change in the observable damage on annealing for 1 hr at temperatures up to 600 C, but at 650 C the defects increase in size and become resolvable as dislocation loops. These loops originate from interstitial atoms and the loop size increases with annealing in the range 650 to 950 C. After annealing at 1200 C a well-developed dislocation network is observed and only a few loops remain. No correlation between recovery of microhardness and the observable damage was apparent. Possible reasons are given for the absence of aggregates of vacant lattice sites.
Download or read book Radiation Damage and Thermal Annealing of Defects in Molybdenum and Tungsten written by A. N. Ivanov and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation damage to high temperature metal homologues of molybdenum and tungsten as a function of dose and the reactor irradiation temperature is investigated. The studies were conducted with polycrystalline specimens 99.9 percent pure in the case of molybdenum and 99.85 percent in the case of tungsten. Variation if the specific electric resistance was used as a measure of the radiation damage. The saturation effect of the radiation damage and the differences observed between the behavior of molybdenum and tungsten are discussed from the standpoint of the thermal stability of the radiation defects formed in them. The part played by radiation alloying when tungsten is irradiated with large thermal neutron doses is also discussed. A study is made of the thermal annealing of radiation defects in molybdenum and tungsten subjected to various irradiation doses at temperatures above room temperature. The similarity between the three recovery stages in the increase in specific electric resistance, observed during annealing in these metals, and the nature of the defects responsible for the recovery stages are discussed. The variation in fine crystal structure for molybdenum and tungsten during reactor irradiation and subsequent annealing is investigated. (Author).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-02 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow and Fracture of Metals and Alloys in Nuclear Enironments written by and published by ASTM International. This book was released on with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiation Damage and Stage Iii Annealing of Molybdenum written by H. B. AFMAN and published by . This book was released on 1970 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DAMAGE IN MOLYBDENUM ASSOCIATED WITH NEUTRON IRRADIATION AND SUBSEQUENT POST IRRADIATION ANNEALING written by and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Molybdemum containing carbon was studied in an attempt to establish the combined effect of impurity content and neutron irradiation on the properties and structure of specific metals. Molybdenum foils were punched into discs and heat treated in vacuum. They were then slow-cooled and irradiated. After irradiation and subsequent decay of radioactivity to a low level the foils were subjected to x-ray diffraction measurements. Cold-worked foils with less than 10 ppm carbon showed no change in microstructure due to irradiation. Molybdenum foils that were annealed prior to irradiation showed spot defects. In foils containing up to 500 ppm carbon, it was concluded that the small loops present after irradiation are due to the clustering of point defects at interstitial carbon atoms, followed by collapse to form a dislocation loop. The amount of lattice expansion after irradiation was strongly dependent on impurity content. Neutron irradiation was found to reduce the number of active slip systems. (M.C.G.).
Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1965 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor Materials written by and published by . This book was released on 1968 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1977 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1977 with total page 1680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book UWFDM written by and published by . This book was released on 1976 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactor Core Materials written by and published by . This book was released on 1964 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A S M Review of Metal Literature written by American Society for Metals and published by . This book was released on 1967 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1971 Annual Summary Report written by and published by . This book was released on 1972 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Annual Meeting written by American Society for Testing and Materials and published by . This book was released on 1965 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 12 includes under the same cover the society's year-book for 1912.
Download or read book Proceedings American Society for Testing and Materials written by American Society for Testing and Materials and published by . This book was released on 1965 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 61-66 include technical papers.
