Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
MICROSCOPIC OBSERVATIONS OF HIGH PURITY URANIUM SUBJECTED TO THERMAL CYCLING. Final Report--Metallurgy Program 5.1.14. Work Completed
Author: Microscopic Observations of High Purity Uranium Subjected to Thermal Cycling
Author: R. M. MayfieldPublisher:
ISBN:
Category : Deformations (Mechanics)
Languages : en
Pages : 72
Book Description
The deformation of uranium upon thermal cycling produced results in microstructure very similar to those obtained in aluminum under creep conditions. The macroscopic elongation of uranium upon cycling may therefore be closely associated with creep relaxation phenomena; however, further work of a more quantitative nature will be required to more clearly define the mechanism producing actual macroscopic dimensional change.
The Transformation Temperatures of High-Purity Uranium. Work Completed
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The transformation temperatures of high-purity uranium were determined by thermal analysis and dilatometry. Thermal analysis methods used include one in which the rates of heating and cooling were controlled by a differential thermocouple, and another in which repeated thermal analyses were made at independently controlled rates. The solid-state transformation temperatures and the logarithm of the heating or cooling rates at relatively low rates are related linearly. The extrapolated functions intersect at a point where the disturbing effects of hysteresis, superheating and undercooling disappear, i.e., at the equilibrium temperature. The mean transformation temperatures are 667 deg C for alpha in equilibrium beta and 775 deg C for beta in equilibrium gamma . The mean temperature for melting and freezing is 1132 deg C. (auth).
Growth Rates and Microstructural Characteristics of 300 C Rolled Uranium Rods on Thermal Cycling. Final Report on Part of Metallurgy Program 5.1.9
Author: Effects of Preferred Orientation and Grain Size on Dimensional Stability of Uranium on Thermal Cycling and Irradiation. Final Report-Metallurgy Program 5.1.7
Author: EFFECTS OF ALLOYING ELEMENT ADDITIONS OF MOLYBDENUM, SILICON, ALUMINUM, TITANIUM, VANADIUM, AND NIOBIUM ON THE THERMAL CYCLING STABILITY OF URANIUM. Final Report of Programs 5.1.3 and 5.1.5. Work Completed
Author: Annual Report, 1985
Author: United States. Presidential Advisory Committee on Small and Minority Business OwnershipPublisher:
ISBN:
Category : Small business
Languages : en
Pages : 32
Book Description
Materials Issues for Generation IV Systems
Author: Véronique GhettaPublisher: Springer Science & Business Media
ISBN: 1402084226
Category : Technology & Engineering
Languages : en
Pages : 596
Book Description
Global warming, shortage of low-cost oil resources and the increasing demand for energy are currently controlling the world's economic expansion while often opposing desires for sustainable and peaceful development. In this context, atomic energy satisfactorily fulfills the criteria of low carbon gas production and high overall yield. However, in the absence of industrial fast-breeders the use of nuclear fuel is not optimal, and the production of high activity waste materials is at a maximum. These are the principal reasons for the development of a new, fourth generation of nuclear reactors, minimizing the undesirable side-effects of current nuclear energy production technology while increasing yields by increasing operation temperatures and opening the way for the industrial production of hydrogen through the decomposition of water. The construction and use of such reactors is hindered by several factors, including performance limitations of known structural materials, particularly if the life of the projected systems had to extend over the periods necessary to achieve low costs (at least 60 years). This book collects lectures and seminars presented at the homonymous NATO ASI held in autumn 2007 at the Institut d’Etudes Scientifiques in Cargèse, France. The adopted approach aims at improving and coordinating basic knowledge in materials science and engineering with specific areas of condensed matter physics, the physics of particle/matter interaction and of radiation damage. It is our belief that this methodology is crucially conditioning the development and the industrial production of new structural materials capable of coping with the requirements of these future reactors.
Selected Topics on Hydrogen Fuel
Author: William Rutledge ParrishPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Heat Treatment
Author: Gregory J. BonamiPublisher:
ISBN: 9781617283482
Category : Metals
Languages : en
Pages : 0
Book Description
Heat treatment is a method used to alter the physical, and sometimes chemical, properties of a material. Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. Techniques in heat treatment include annealing, case hardening, precipitation strengthening, tempering and quenching. This book reviews current research in the study of heat treatments including the heat treatment of vitrified grinding wheels; fog-quenching after heat treatments for big cylindrical parts in rolling mills; an analysis of the yield strength and of the ageing and quenching heating temperature in aluminium alloys; heat treatment of 18% nickel maraging steels and the thermal treatment of wood at high temperatures as an alternative environment friendly wood modification technology.