کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
674022 | 1459537 | 2012 | 7 صفحه PDF | دانلود رایگان |

A number of DSC studies have determined the onset temperature and the enthalpy change for the β → γ phase transformation in plutonium but these have all been conducted by measuring the phase transformation parameters immediately following the α → β phase transformation which will have a considerable impact on the reaction kinetics.The thermal history and condition of a specimen will have a significant effect on the reaction parameters of a solid phase transformation. The current study examines the influence of the specimen condition and more specifically the impact of a previous phase transformation and the mode of formation of the β-phase from both the α-phase and from the γ-phase on the β → γ phase transformation parameters and reaction kinetics.The impact of the β-phase condition on the transformation parameters of the β → α phase transformation is also examined.
► Significant impact of thermal history on β → γ phase transformation parameters.
► Stability of the parent β-phase on the kinetics of the β → γ phase transformation.
► Comparison of β → γ transformation parameters for β-phase formed from α-phase and from γ-phase.
► Comparison of β → γ reaction kinetics for β-phase formed from α-phase and from γ-phase.
► Impact of β-phase condition on the reaction parameters for the β → α phase transformation.
Journal: Thermochimica Acta - Volume 547, 10 November 2012, Pages 99–105