Uranium Niobium Alloys
DOWNLOAD
Download Uranium Niobium Alloys PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Uranium Niobium Alloys book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Preparation Of Ingots Of Uranium Niobium Alloys
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1956
Preparation Of Ingots Of Uranium Niobium Alloys written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Niobium alloys categories.
A study was made of the preparation of a uranium - 10 w/O niobium alloy by the bomb reduction of a suitable form of niobium and uranium tetrafluoride with calcium. A compound with a probable formula of Na2NbOF5 proved to be most satisfactory as the source of niobium. High yields and good metal-slag separations were obtained. Chemical analysis and density determinations showed the composition to be 10 ℗± 0.5 w/o niobium. Fifteen pounds of alloy were melted in BeO and cast into a graphite mold.
The Analysis Of Uranium Niobium Alloys
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1952
The Analysis Of Uranium Niobium Alloys written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.
A satisfactory procedure is described for the analysis of uranium-niobium alloys containing up to 25% niobium. It is based on the separation of the niobium from uranium by dissolving the cupferron complex of the former element into chloroform. After the evaporation of the solvent from the combined organic extracts, the niobium is ignited to the pentoxide. The uranium is afterwards precipitated from the remaining aqueous solution by the addition of ammonium hydroxide after the wet oxidation of organic matter. Absorptiometric procedures are included for the determination of the small amounts of uranium co-extracted with the niobium and the trace amounts of unextracted niobium. (auth).
Determination Of The Exact Composition Of Uranium Niobium Alloys
DOWNLOAD
Author : Branko Đurić
language : en
Publisher:
Release Date : 1968
Determination Of The Exact Composition Of Uranium Niobium Alloys written by Branko Đurić and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Niobium alloys categories.
Metallurgical Studies Of Niobium Uranium Alloys
DOWNLOAD
Author : John A. DeMastry
language : en
Publisher:
Release Date : 1959
Metallurgical Studies Of Niobium Uranium Alloys written by John A. DeMastry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Niobium alloys categories.
In a continuing program, fabrication characteristics, physical and mechanical properties, and corrosion behavior in air, CO2, NaK, water, and steam were studied for . binary niobium fuel alloys containing 10, 20, 30, 40, 50, and 60 wt.% uranium To evaluate the effects of two major impurities of niobium, oxygen, and zirconium, three niobium base stocks, differing according to the level of these impurities, were used for each alloy. The impurity combinations employed were 600 ppm oxygen and 0.74 wt.% zirconium, 700 ppm oxygen, and 0.17 wt.% zirconium, and 300 ppm oxygen and 0.02 wt.% zirconium, Representative specimens of these alloys retained their hardness up to 900 deg C The 10 and 20 wt.% uraniuin alloys were successfully rorged at 2500 deg F and rolled at 1800 deg F to sheet. Fabrication characteristics of the remaining alloys are under investigation. The 0.2% offset yield strength of the 10 wt.% uranium alloy was 57,200 psi at room temperature and 36,900 psi at 1600 deg F. For the 20 wt.% uranium alloy it was 93,200 psi at room temperature and 71.000 psi at 1600 deg F. The corrosion life of all of the alloys in air at 572 deg F and in CO2 at 600 deg F was superior to that of unalloyed niobium. In 1000- hr exposures to 600 deg F water most of the alloys exhibited corrosion rates only two or three times greater than that of Zircaloy-2. All oi the alloys appear compatible with NaK at 1600 deg F. The impurity combinations employed in the base niobium appeared to have no effect on the corrosion behavior and mechanical properties of the alloys. (auth).
The Analysis Of Uranium Niobium Alloys
DOWNLOAD
Author : G.W.C. Milner
language : en
Publisher:
Release Date : 1952
The Analysis Of Uranium Niobium Alloys written by G.W.C. Milner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.
Development Of Niobium Uranium Alloys For Elevated Temperature Fuel Applications
DOWNLOAD
Author : John A. DeMastry
language : en
Publisher:
Release Date : 1961
Development Of Niobium Uranium Alloys For Elevated Temperature Fuel Applications written by John A. DeMastry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Niobium alloys categories.
As a continuation of studies reported in BMI-1400, fabrication characteristics, physical and mechanical properties, and corrosion behavior in NaK, sodium, and water of niobium--uranium binary alloys containing up to 60 wt.% uranium were investigated. Alloys were cast by a skull melting and consumable and nonconsumable arc-melting methods. Fabrication difficulties with alloys containing greater than 25 wt.% uranium were related to coring-type microsegregation during casting. Tensile tests indicated 0.2% offset yield strengths of 16,880, 22,370 and 28,600 psi for niobium2000 deg F. Additional tensile data were obtained for alloys from 1600 to 2400 deg F. Stresses to produce minimum creep rates of 0.001, 0.01, and 0.1%/hr at 1600, 1800, and 2000 deg F were also determined. Both tensile and creep strengths were found to be sensitive to oxygen content. All alloys appeared compatible with NaK at 1600 deg F and with sodium at 1500 deg F. In 600 deg F water, most of the alloys tested exhibited negligible weight changes after 336 days' exposure. Weight changes were greater after 140 days' exposure to 680 deg F water, but corrosion rates were considered satisfactory for a clad fuel. The thermal and electrical conductivities of niobium are lowered by the addition of uranium, while the thermal-expansion characteristics are essentially unaffected. Recrystallization temperatures for 90% cold-reduced niobium-4.38, -14.3, -20, -25.0, and -30 wt.% uranium alloys are 2300, 2300, 2400, 2300, and 2200 deg F, respectively. No appreciable effect of oxygen contents ranging from 100 to 1000 ppm was observed on the composition limits of the gamma immiscibility gap in the niobium-- uranium system. (auth).
The Gravimetric Determination Of Niobium In Uranium Niobium Alloys
DOWNLOAD
Author : Owen H. Kriege
language : en
Publisher:
Release Date : 1956
The Gravimetric Determination Of Niobium In Uranium Niobium Alloys written by Owen H. Kriege and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Gravimetric analysis categories.
Analysis Of Uranium Tantalum And Uranium Niobium Alloys
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1952
Analysis Of Uranium Tantalum And Uranium Niobium Alloys written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.
A Model For High Strain Rate Deformation Of Uranium Niobium Alloys
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2003
A Model For High Strain Rate Deformation Of Uranium Niobium Alloys written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
A thermodynamic approach is used to develop a framework for modeling uranium-niobium alloys under the conditions of high strain rate. Using this framework, a three-dimensional phenomenological model, which includes nonlinear elasticity (equation of state), phase transformation, crystal reorientation, rate-dependent plasticity, and porosity growth is presented. An implicit numerical technique is used to solve the evolution equations for the material state. Comparisons are made between the model and data for low-strain-rate loading and unloading as well as for heating and cooling experiments. Comparisons of the model and data also are made for low- and high-strain-rate uniaxial stress and uniaxial strain experiments. A uranium-6 weight percent niobium alloy is used in the comparisons of model and experiment.
Analysis Of Uranium Tantalum And Uranium Niobium Alloys
DOWNLOAD
Author : Atomic Energy Research Establishment (Harwell, England)
language : en
Publisher:
Release Date : 1952
Analysis Of Uranium Tantalum And Uranium Niobium Alloys written by Atomic Energy Research Establishment (Harwell, England) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.