Download or read book Dislocation Loops and Irradiation Growth in Alpha Uranium written by B. Hudson and published by . This book was released on 1961 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Rolling and Heat Treatment on Anisotropic Irradiation Growth of Uranium written by J. H. Kittel and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made to determine the effect of rolling temperature, roll pass design, amount of reduction, and heat treatment before and after rolling on the anisotropic growth rate of uranium under irradiation. The growth rate was found to increase with decreasing rolling temperature and with increasing reduction of area at 300 deg C. The rate of elongation was proportional to the amount of (010) component present or, where shortening occurred, to the amount of (100) component. Oval-edge-oval roll passes resulted in somewhat higher irradiation growth rates than did round roll passes. Recrystallization after rolling effectively reduced the irradiation growth rate of uranium rolled at temperatures of 500 deg C and lower. Irradiation caused length shortening in uranium which was beta quenched after being round-rolled at temperatures of 400 deg C and above, and which was beta quenched after being oval- rolled at temperatures of 300 deg C and above.
Download or read book The Growth of Alpha Uranium Under Irradiation written by and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Relations between tensile or compressive yield strength of alpha uranium and crystallographic direction have been predicted by R.W. Cahn from the observed slip and twin systems reported in M/R-740. These relations are used in conjunction with a development of the model proposed by Wyatt and described in M/R-772 to provide a theory of the mechanism of growth of alpha uranium under irradiation. The growth behavior of rods having various types of preferred orientation can be deduced from this theory, which also explains why growth is observed in the direction of high tensile yield stress. The theory predicts absence of growth in uranium irradiated at temperatures above those at which deformation occurs by twinning, and has been used by Jones to predict the role of alloying additions in preventing irradiation damage. (auth).
Download or read book Quantitative Correlation of Irradiation Growth with Preferred Orientation in Uranium written by William R. McDonell and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dimensional Instability of Uranium written by Robert Resnick and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1971-05 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Inversion of Pole Figures for Materials Having Orthorhombic Symmetry written by Peter R. Morris and published by . This book was released on 1964 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructure of Radiation Damage in the Uranium Film and Its Backing Materials Irradiated with 136 MeV 136Xe26 written by Supriyadi Sadi and published by . This book was released on 2012 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructure changes in uranium and uranium/metal alloys due to radiation damage are of great interest in nuclear science and engineering. Titanium has attracted attention because of its similarity to Zr. It has been proposed for use in the second generation of fusion reactors due to its resistance to radiation-induced swelling. Aluminum can be regarded as a standard absorbing material or backing material for irradiation targets. Initial study of thin aluminum films irradiation by 252Cf fission fragments and alpha particles from source has been conducted in the Radiation Center, Oregon State University. Initial study of thin aluminum films irradiation by 252Cf fission fragments and alpha particles from source has been conducted in the Radiation Center, Oregon State University. Aluminum can be regarded as a standard absorbing material or backing material for irradiation targets. The AFM investigation of microstructure damages of thin aluminum surfaces revealed that the voids, dislocation loops and dislocation lines, formed in the thin aluminum films after bombardment by 252Cf fission fragments and alpha particles, depends on the irradiation dose. The void swelling and diameter and depth of voids increase linearly with the fluence of particles and dose; however, the areal density of voids decreased when formation of dislocation loops began. Study of deposition of uranium on titanium backing material by molecular plating and characterization of produced U/Ti film has been performed. The U/Ti film has smooth and uniform surfaces but the composition of the deposits is complex and does not include water molecules which probably involve the presence of U (VI). A possible structure for the deposits has been suggested. X-ray diffraction pattern of U/Ti films showed that The U/Ti film has an amorphous structure. Uranium films (0.500 mg/cm2) and stack of titanium foils (thickness 0.904 mg/cm2) were used to study the microstructural damage of the uranium film and its backing material. Irradiation of U/Ti film and Ti foils with 1 MeV/u (136 MeV) 136Xe26 ions in was performed in the Positive Ion Injector (PII) unit at the Argonne Tandem Linear Accelerator System (ATLAS) Facility at Argonne National Laboratory, IL. Pre- and post- irradiation of samples was analyzed by X-ray diffraction, Scanning Electron Microscopy/Energy Dispersive Spectroscopy (SEM/EDS) and Atomic Force Microscopy (AFM). The irradiation of U/Ti films results in the formation of a crystalline U4O9 phase and polycrystalline Ti phase. Annealing of the thin uranium deposit on a titanium backing at 800°C in the air atmosphere condition for an hour produced a mixture of UO3, U3O, Ti, TiO and TiO2 (rutile) phases; meanwhile, annealing at 800°C for an hour in the argon environment produced a mixture of [beta]-U3O--, Ti and TiO2 (rutile) phases. These phenomena indicate that the damage during irradiation was not due to foil heating. Microstructural damage of irradiated uranium film was dominated by void and bubble formation. The microstructure of irradiated titanium foils is characterized by hillocks, voids, polygonal ridge networks, dislocation lines and dislocation networks. Theory predicts that titanium undergoes an allotropic phase transformation at 882.5 °C, changing from a closed-packed hexagonal crystal structure ([alpha]-phase) into a body-centered cubic crystal structure ([beta]-phase). When the titanium foils were irradiated with 136MeV 136Xe26 at beam intensity of 3 pnA corresponding to 966°C, it was expected that its structure can change from hexagonal-close packed (hcp) to body-centered cubic (bcc). However, in contrast to the theory, transformation from [alpha]-Ti (hcp) phase to fcc-Ti phase was observed. This phenomenon indicates that during irradiation with high energy and elevated temperature, the fcc-Ti phase more stable than the hcp-Ti Phase.
Download or read book GROWTH OF CONSTRAINED ALPHA ROLLED URANIUM UNDER IRRADIATION written by and published by . This book was released on 1954 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tear Formation and Growth in Irradiated uranium written by Kei An Lee and published by . This book was released on 1976 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electron Microscopic Observation of Dislocation Networks and Radiation Damage in Alpha uranium written by Severin Amelinckx and published by . This book was released on 1964 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Crystallography and Burgers Vectors of Dislocation Loops in alpha uranium written by B. Hudson and published by . This book was released on 1964 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irradiation Damage and Swelling in Alpha Uranium written by Brian Hudson and published by . This book was released on 1974 with total page 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 1963 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irradiation Growth in Uranium written by S.N. Buckley and published by . This book was released on 1966 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Rolling and Heat Treatment on Anisotropic Irradiation Growth of Uranium Final Report Metallurgy Program 6 1 15 written by and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made to determine the effect of rolling temperature, roll pass design, amount of reduction, and heat treatment before and after rolling on the anisotropic growth rate of uranium under irradiation. The growth rate was found to increase with decreasing rolling temperature and with increasing reduction of area at 300 deg C. The rate of elongation was proportional to the amount of (0l0) component present or, where shortening occurred, to the amount of (l00) component. Oval-edgeoval roll passes resulted in somewhat higher irradiation growth rates than did round roll passes. Recrystallization after rolling effectively reduced the irradiation growth rate of uranium rolled at temperatures of 500 deg C and lower. Irradiation caused length shortening in uranium which was beta quenched after being round-rolled at temperatures of 400 deg C and above, and which was beta quenched after being oval- rolled at temperatures of 300 deg C and above. (auth).
