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231224s2016 xx ||||| 00| ||eng c |
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|a pubmed25n0870.xml
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|a (DE-627)NLM261173235
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|a (NLM)27275139
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Säubert, Steffen
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Neutron and hard X-ray diffraction studies of the isothermal transformation kinetics in the research reactor fuel candidate U-8 wt%Mo
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Revised 29.09.2020
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a Exposing uranium-molybdenum alloys (UMo) retained in the γ phase to elevated temperatures leads to transformation reactions during which the γ-UMo phase decomposes into the thermal equilibrium phases, i.e. U2Mo and α-U. Since α-U is not suitable for a nuclear fuel exposed to high burn-up, it is necessary to retain the γ-UMo phase during the production process of the fuel elements for modern high-performance research reactors. The present work deals with the isothermal transformation kinetics in U-8 wt%Mo alloys for temperatures between 673 and 798 K and annealing durations of up to 48 h. Annealed samples were examined at room temperature using either X-ray or neutron diffraction to determine the phase composition after thermal treatment, and in situ annealing studies disclosed the onset of phase decomposition. While for temperatures of 698 and 673 K the start of decomposition is delayed, for higher temperatures the first signs of transformation are already observable within 3 h of annealing. The typical C-shaped curves in a time-temperature-transformation (TTT) diagram for both the start and the end of phase decomposition could be determined in the observed temperature regime. Therefore, a revised TTT diagram for U-8 wt%Mo between 673 and 798 K and annealing durations of up to 48 h is proposed
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|a Journal Article
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|a X-ray diffraction
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|a isothermal transformation kinetics
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|a neutron diffraction
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| 650 |
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|a nuclear fuels
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|a uranium
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| 650 |
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|a uranium–molybdenum alloys
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1 |
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|a Jungwirth, Rainer
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zweifel, Tobias
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hofmann, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoelzel, Markus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Petry, Winfried
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 49(2016), Pt 3 vom: 01. Juni, Seite 923-933
|w (DE-627)NLM098121561
|x 0021-8898
|7 nnns
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| 773 |
1 |
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|g volume:49
|g year:2016
|g number:Pt 3
|g day:01
|g month:06
|g pages:923-933
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_NLM
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|a GBV_ILN_350
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|a AR
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|d 49
|j 2016
|e Pt 3
|b 01
|c 06
|h 923-933
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