Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Plutonium, thermally cycled through the low-temperature allotropic transformations, exhibited extensive physical damage. The physical damage was greater than that reported for any other metal or alloy. The extent of physical damage was determined by measurements of fluid displacement and the dimensional changes. The internal porosity was examined metallographically. Physical damage varied considerably, depending on the cycling conditions and the characteristics of the metal (particularly inclusions and casting imperfections). Observations showed that increasing the specimen size produced a greater decrease in density as a function of the number of cycles. The degree of void formation was directly proportional to volume change associated with the phase transformation. Other variables such as the length-diameter ratio (constant diameter) had little or no influence on the amount of physical damage. The dimensional growth was both radial and longitudinal. The tensile strength and the yield strength of tensile specimens cycled ten times between the gamnna and alpha phases were decreased to an average of 30,000 and 26,000 psi, respectively. (auth).
Thermal Cycling of Plutonium. Part I. Observations of the Physical Damage Resulting from Thermal Cycling Plutonium Through Its Low Temperature Phase Transformations
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Plutonium, thermally cycled through the low-temperature allotropic transformations, exhibited extensive physical damage. The physical damage was greater than that reported for any other metal or alloy. The extent of physical damage was determined by measurements of fluid displacement and the dimensional changes. The internal porosity was examined metallographically. Physical damage varied considerably, depending on the cycling conditions and the characteristics of the metal (particularly inclusions and casting imperfections). Observations showed that increasing the specimen size produced a greater decrease in density as a function of the number of cycles. The degree of void formation was directly proportional to volume change associated with the phase transformation. Other variables such as the length-diameter ratio (constant diameter) had little or no influence on the amount of physical damage. The dimensional growth was both radial and longitudinal. The tensile strength and the yield strength of tensile specimens cycled ten times between the gamnna and alpha phases were decreased to an average of 30,000 and 26,000 psi, respectively. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Plutonium, thermally cycled through the low-temperature allotropic transformations, exhibited extensive physical damage. The physical damage was greater than that reported for any other metal or alloy. The extent of physical damage was determined by measurements of fluid displacement and the dimensional changes. The internal porosity was examined metallographically. Physical damage varied considerably, depending on the cycling conditions and the characteristics of the metal (particularly inclusions and casting imperfections). Observations showed that increasing the specimen size produced a greater decrease in density as a function of the number of cycles. The degree of void formation was directly proportional to volume change associated with the phase transformation. Other variables such as the length-diameter ratio (constant diameter) had little or no influence on the amount of physical damage. The dimensional growth was both radial and longitudinal. The tensile strength and the yield strength of tensile specimens cycled ten times between the gamnna and alpha phases were decreased to an average of 30,000 and 26,000 psi, respectively. (auth).
Thermal Cycling of Plutonium
Author: R. D. Nelson
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 72
Book Description
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 72
Book Description
Physical Damage in Plutonium
Reactor Core Materials
Transformation Kinetics of Plutonium
Author: R. D. Nelson
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 126
Book Description
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 126
Book Description
Nuclear Reactor Fuel Elements
Author: Albert R. Kaufmann
Publisher:
ISBN:
Category : Nuclear fuels
Languages : en
Pages : 760
Book Description
Publisher:
ISBN:
Category : Nuclear fuels
Languages : en
Pages : 760
Book Description
Nuclear Science Abstracts
Isotopic Power Sources ...
Preliminary Investigation of the Transformation Rates of Plutonium-uranium Alloys
Journal
Author: British Nuclear Energy Society
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 480
Book Description
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 480
Book Description