Supplement to "Studies on the Equilibrium Temperature for the Plutonium Alpha-Beta Transformation." PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
The cited paper presents data which establishes the equilibrium temperature for the alpha-beta transformation of Pu at 117.0 ±0.5°C. This was observed by following the electrical resistance change in thin, high purity, mixed-phase specimens as they were thermally cycled near the transformation temperature. As expected the time required for small phase changes near the equilibrium temperature was long. Data regarding the mechanisms of the alpha-beta and beta-alpha transformations or rates as a function of temperature were not presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
The cited paper presents data which establishes the equilibrium temperature for the alpha-beta transformation of Pu at 117.0 ±0.5°C. This was observed by following the electrical resistance change in thin, high purity, mixed-phase specimens as they were thermally cycled near the transformation temperature. As expected the time required for small phase changes near the equilibrium temperature was long. Data regarding the mechanisms of the alpha-beta and beta-alpha transformations or rates as a function of temperature were not presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The metastability of alpha plutonium above the [alpha] [r-equilibrium] [beta] equilibrim transformation temperature (112 C) was studied by metallographic techniques. The purpose of this study was to extend the previous work on the [alpha] [yields] [beta] transformation which was accomplished using fluid displacement techniques[sup 1] and to obtain a basis for determining the length of time the alpha phase is stable at high temperatures. Approximate isothermal reaction curves were determined experimentally and an [alpha] [yields] [beta] time- temperature-transformation (T-T-T) curve was derived.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The kinetics of the gamma deg C was con- beta deg C was con- alpha, beta deg C was con- gamma, and alpha deg C was con- beta deg C was con- gamma transformations were determined with a fiuid displacement technique. The rates of formation of the alpha and beta phases from the gamma phase were determined after gamma heat treating and allowing a sample to traasform isothermally in the alpha and beta ramges. Isothermal reaction curves were obtained from 160 C to -78C. The time-temperature-transformation curve of the gamma deg C was con- beta deg C was con- alpha transformation was plotted. The effect of the gamma heat treating time and temperature on the rate of transformation was examined. Isothermal reaction curves and time-temperature- transformation curves of the beta deg C was con- gamma, and alpha deg C was con- beta deg C was con- gamma transformations were plotted. Photomicrographs of specimens having transformed from the gamma range at different rates of transformation are presented. (auth).
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Author: J. W. Anderson
Author: ![The Thermodynamic Equilibrium Temperatures of the [alpha]-[beta] and [beta]-[gamma] Transformations in Plutonium PDF](https://books.google.com/books/content/images/frontcover/iT4WrgEACAAJ?fife=w80-h100)
Author: J.D. Hill
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Author: R. D. Nelson
Author: R. D. Nelson
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