Author: Chinhong ChenPublisher:
ISBN:
Category : Uranium
Languages : en
Pages : 78
Book Description
Stress-corrosion Cracking Behavior of Uranium- 7.5%Nb- 2.5%Zr
Author: Chinhong ChenPublisher:
ISBN:
Category : Uranium
Languages : en
Pages : 78
Book Description
A Survey of Factors which Influence Stress Corrosion Crack Initiation in Several Uranium Base Alloys
Author: L. L. StephensonPublisher:
ISBN:
Category : Stress corrosion
Languages : en
Pages : 30
Book Description
Stress Corrosion Cracking of Uranium--niobium Alloys
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The stress corrosion cracking behavior of U-21/4, 41/2, 6 and 8 wt % Nb alloys was evaluated in laboratory air and in aqueous Cl− solutions. Thresholds for crack propagation were obtained in these environments. The data showed that Cl− solutions are more deleterious than air environments. Tests were also conducted in pure gases to identify the species in the air responsible for cracking. These data showed the primary stress corrodent is water vapor for the most reactive alloy, U-21/4% Nb, while O2 is primarily responsible for cracking in the more corrosion resistant alloys, U-6 and 8% Nb. The 41/2% alloy was found to be susceptible in both H2O and O2 environments.
Stress Corrosion and Corrosion Susceptibility of Depleted Uranium -6 W/o Nb
Author: R. W. BaconPublisher:
ISBN: 9780855181642
Category : Metallurgy
Languages : en
Pages : 40
Book Description
Stress Corrosion Cracking of Uranium Alloys
Author: Walter F. CzyrklisPublisher:
ISBN:
Category :
Languages : en
Pages : 17
Book Description
The study was carried out to determine the critical threshold intensity for stress corrosion cracking of several uranium alloys which are candidates for ballistic penetrator and nuclear shell applications. The data reported here are for alloys in the as-extruded condition only and will serve as base-line data for future studies involving the solution-treated-and-aged alloys.
STRESS CORROSION CRACKING IN URANIUM-MOLYBDENUM ALLOYS.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An investigation was conducted to determine the cause of cracking, during tension, on the surface of tensile specimens of U--Mo alloys. The cracking was observed in alloys that were water quenched from a temperature range in which the body-centered cubic gamma phase was stable and, subsequently, stressed in tension. The investigation was carried out on alloys of U--Mo containing 5 and 4 wt% Mo. It was discovered early in the study that the cracking could be eliminated by testing tensile specimens in a He atmosphere. Because of this result, tensile tests were performed in vacuum O22, impure N2, and purified N2. Additional experiments were done to establish the relation of stress state, temperature, strain rate, O2 pressure, stress magnitude, and grain size to the cracking phenomenon. U--4 wt% Mo and U--5 wt% Mo were compared with respect to microstructure and crystal structure, since both alloys cracked during the tensile test. The origin and propagation of cracks in the microstructure were studied, using motion pictures and metallography. The results of the various experiments showed that the cracking occurred only in tension and was caused by stress-corrosion cracking due to the presence of O/sub 2/ in the atmosphere. The rate of cracking increased as the temperature was increased above 25 deg C. Below 10 deg C cracking was not observed in the U-5 wt% Mo alloy. Cracking was not associated with just one metastable phase. since it was observed in both the U-5 wt% Mo and U-4 wt% Mo alloys, which have different crystal structures when rendered metastable by water quenching from the gamma phase field. The path of fracture was transgranular and was not associated with deformation markings in the grains. (auth).
Stress Corrosion Cracking Analysis on Machined Pure Uranium Utilizing Thermoelectric Power and Low Frequency Induced Impedance Advanced Nondestructive Tools
Author: Craig Allen VanHornPublisher:
ISBN:
Category : Metals
Languages : en
Pages : 358
Book Description
ELECTROCHEMICAL AND OTHER STUDIES OF A URANIUM ALLOY EXHIBITING STRESS- CORROSION CRACKING.
Author: Variables which Influence the Stress-corrosion Cracking of Uranium--7.5 Niobium--2.5 Zirconium Alloy
Author: Sensitization and Stress Corrosion Cracking Behavior of Alloy 800
Author: Jonathan S. JanssenPublisher:
ISBN:
Category : Materials science and engineering
Languages : en
Pages : 218
Book Description