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Author : B. B. Glasgow
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (354 download)
Download or read book Helium Bubble Formation and Swelling in Metals written by B. B. Glasgow and published by . This book was released on 1981 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. M. Bond
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Helium-bubble formation and void swelling in nimonic PE16 alloy under dual-ion (He+, Ni+) irradiation written by G. M. Bond and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The English Pilot, Describing the Sea Coasts, Capis, Headlands, Bays, Roads, Harbours, Rivers, and Ports ... in the Whole Mediterranean Sea, Likewise the Courses and Distances ... written by and published by . This book was released on 1763 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : AG. Pieper
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)
Download or read book Helium Mobility and Bubble Formation in Type 316 Stainless Steel, Aluminum, and Vanadium written by AG. Pieper and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helium mobility and bubble formation have been studied in Type 316 stainless steel, aluminum, and vanadium by implanting helium with the Naval Research Laboratory (NRL) cyclotron and studying its motion during subsequent annealing experiments. A newly developed ?-? elastic scattering technique was used to determine helium concentration profiles in the metals, and quantitative transmission electron microscopy was used to characterize the bubble populations. Bubbles reached visible size at about 0.65 Tm and continued to grow by a surface diffusion controlled process of bubble migration. Helium loss from cold-worked material was found to be much greater than in annealed material.
Author : Yongqiang Wang
Publisher : MDPI
ISBN 13 : 303936362X
Total Pages : 196 pages
Book Rating : 4.0/5 (393 download)
Download or read book Radiation Damage in Materials written by Yongqiang Wang and published by MDPI. This book was released on 2020-12-28 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complexity of radiation damage effects in materials that are used in various irradiation environments stems from the fundamental particle–solid interactions and the subsequent damage recovery dynamics after the collision cascades, which involves multiple length and time scales. Adding to this complexity are the transmuted impurities that are unavoidable from accompanying nuclear processes. Helium is one such impurity that plays an important and unique role in controlling the microstructure and properties of materials used in fast fission reactors, plasma-facing and structural materials in fusion devices, spallation neutron target designs, actinides, tritium-containing materials, and nuclear waste. Their ultra-low solubility in virtually all solids forces He atoms to self-precipitate into small bubbles that become nucleation sites for further void growth under radiation-induced vacancy supersaturations, resulting in material swelling and high-temperature He embrittlement, as well as surface blistering under low-energy and high-flux He bombardment. This Special Issue, “Radiation Damage in Materials—Helium Effects”, contains review articles and full-length papers on new irradiation material research activities and novel material ideas using experimental and/or modeling approaches. These studies elucidate the interactions of helium with various extreme environments and tailored nanostructures, as well as their impact on microstructural evolution and material properties.
Author :
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fusion Energy Update written by and published by . This book was released on 1979 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 522 pages
Book Rating : 4.3/5 (91 download)
Download or read book Los Alamos Science written by and published by . This book was released on 2000 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Martin L. Grossbeck
Publisher : ASTM International
ISBN 13 : 0803134770
Total Pages : 767 pages
Book Rating : 4.8/5 (31 download)
Download or read book Effects of Radiation on Materials written by Martin L. Grossbeck and published by ASTM International. This book was released on 2004 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan A. Zimmerman
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (316 download)
Download or read book Computer Simulation of Boundary Effects on Bubble Growth in Metals Due to He written by Jonathan A. Zimmerman and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomistic simulation methods were used to investigate and identify the relevant physical mechanisms necessary to describe the growth of helium gas bubbles within a metal lattice. Specifically, molecular dynamics simulations were performed to examine the material defects that originate from growing spherical He bubbles in a palladium crystal. These simulations consist of a model system containing bubbles within a metal and near a free surface. The simulation code employed was ParaDyn using the Embedded Atom Method to model the constitutive properties of Pd atoms in a FCC lattice. The results of these simulations are compared with previously run calculations of He bubbles in a bulk lattice [l]. These simulations show the influence of the free surface on defect creation and evolution. Features compared include the formation of inter-bubble dislocations, bubble pressure and swelling as functions of He to metal (He/M) concentration.
Author :
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (3 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zenji Nishiyama
Publisher : Elsevier
ISBN 13 : 0323148816
Total Pages : 480 pages
Book Rating : 4.3/5 (231 download)
Download or read book Martensitic Transformation written by Zenji Nishiyama and published by Elsevier. This book was released on 2012-12-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Martensitic Transformation examines martensitic transformation based on the known crystallographical data. Topics covered range from the crystallography of martensite to the transformation temperature and rate of martensite formation. The conditions for martensite formation and stabilization of austenite are also discussed, along with the crystallographic theory of martensitic transformations. Comprised of six chapters, this book begins with an introduction to martensite and martensitic transformation, with emphasis on the basic properties of martensite in steels such as carbon steels. The next two chapters deal with the crystallography of martensite and discuss the martensitic transformation behavior of the second-order transition; lattice imperfections in martensite; and close-packed layer structures of martensites produced from ? phase in noble-metal-base alloys. Thermodynamical problems and kinetics are also analysed, together with conditions for the nucleation of martensite and problems concerning stabilization of austenite. The last chapter discusses the theory of the mechanism underlying martensitic transformation. This monograph will be of interest to metallurgists and materials scientists.
Author : WG. Wolfe
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Kinetics of Helium Bubble Formation in Nuclear and Structural Materials written by WG. Wolfe and published by . This book was released on 2004 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron activation of most materials results in some generation of both helium and/or hydrogen. Other cases of helium generation are encountered in materials containing tritium, and in materials which are radioactive and undergo alpha-decay. Finally, materials in accelerators, spallation neutron sources, and nuclear fusion devices are subjected to energetic beams of protons or helium ions. In all these cases, helium may be retained within the materials employed, and helium bubbles form and grow. With the exception of tritium decay, radiation damage usually accompanies the helium formation. The rates of helium formation and radiation damage are traditionally stated in terms of the ratio of appm He to dpa (displacement per atom). When this ratio approaches or exceeds about 10 appm He/dpa, a profuse population of helium clusters and bubbles appears in the material when the temperature is high enough for helium migration to occur, with or without a concomitant formation of voids.
Author : S.E. Donnelly
Publisher : Springer
ISBN 13 : 1489936807
Total Pages : 458 pages
Book Rating : 4.4/5 (899 download)
Download or read book Fundamental Aspects of Inert Gases in Solids written by S.E. Donnelly and published by Springer. This book was released on 2013-12-20 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO Advanced Research Workshop on Fundamental Aspects of Inert Gases in Solids, held at Bonas, France from 16-22 September 1990, was the fifth in a series of meetings that have been held in this topic area since 1979. The Consultants' Meeting in that year at Harwell on Rare Gas Behaviour in Metals and Ionic Solids was followed in 1982 by the Jiilich Inter national Symposium on Fundamental Aspects of Helium in Metals. Two smaller meetings have followed-a CECAM organised workshop on Helium Bubbles in Metals was held at Orsay, France in 1986 while in February 1989, a Topical Symposium on Noble Gases in Metals was held in Las Vegas as part of the large TMS/AIME Spring Meeting. As is well known, the dominating feature of inert gas atoms in most solids is their high heat of solution, leading in most situations to an essentially zero solubility and gas-atom precipita tion. In organising the workshop, one particular aim was to target the researchers in the field of inert-gas/solid interactions from three different areas--namely metals, tritides and nuclear fuels-in order to encourage and foster the cross-fertilisation of approaches and ideas. In these three material classes, the behaviour of inert gases in metals has probably been most studied, partly from technological considerations-the effects of helium production via (n, a) reac tions during neutron irradiation are of importance, particularly in a fusion reactor environ ment-and partly from a more fundamental viewpoint.
Author :
Publisher :
ISBN 13 :
Total Pages : 876 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annual Report written by and published by . This book was released on with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 718 pages
Book Rating : 4.:/5 (318 download)
Download or read book Review written by and published by . This book was released on 1973 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. J. Baroch
Publisher : ASTM International
ISBN 13 : 9780803105393
Total Pages : 640 pages
Book Rating : 4.1/5 (53 download)
Download or read book Properties of Reactor Structural Alloys After Neutron Or Particle Irradiation written by C. J. Baroch and published by ASTM International. This book was released on 1975 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : WG. Wolfer
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (125 download)
Download or read book High-Density Equation of State for Helium and Its Application to Bubbles in Solids written by WG. Wolfer and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helium, produced by transmutations or injected, causes bubble formation in solids at elevated temperatures. For small bubbles, the gas pressure required to balance the surface tension reaches values which far exceed those obtainable in experiments to measure the equation of state for helium gas. Therefore, empirical gas laws cannot be considered applicable to the fluid-like densities existing in small bubbles. In order to remedy this situation, an equation of state for helium was developed from the theory of the liquid state. At very low densities, this theoretically derived equation of state agrees with experimental results. For high densities, however, gas pressures are predicted which are significantly higher than those derived from the ideal gas law, but also significantly lower than pressures obtained with the van der Waals law. When applied to equilibrium bubbles in solids, it is found that the high-density equation of state leads to less bubble swelling than the van der Waals law, but more than the ideal gas law. Furthermore, the number of helium atoms in equilibrium bubbles is nearly independent of temperature.
