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X-ray topography of uranium alloys; Topographie aux rayons X d'alliages d'uranium

Abstract

A description of the structure of uranium alloys has been made using the data obtained by X-ray diffraction techniques derived from the Berg-Barrette method. In the first.stage the use of a monochromatic beam of X-rays having a very low divergence makes it possible to obtain very reproducible and exact numerical data concerning the grain and sub-grain sizes, and also the distribution of the sizes. It is thereby possible to detect any disorientation greater than 30 seconds of arc.The results obtained have been completed using a variable incidence device which- gives simultaneously an overall picture of a grain and an idea of the importance of internal disorientations; a more rigorous measurement of this latter parameter is then deduced from the Debye-Scherrer diagrams obtained using a fine-focus equipment. Observations are carried out on various one-phase or two phase uranium alloys which are compared successively to technical and to high-purity uranium. It is shown that the use of X-ray topographies, although limited in certain respects, allows a quantitative characterization of the structure. (author) [French] Une description des structures d'alliages d'uranium a ete faite a partir des donnees fournies par des techniques de diffraction de rayons X derivees de la methode de BERG--BARRETT. Dans  More>>
Authors:
Le Naour, L [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1968
Product Type:
Technical Report
Report Number:
CEA-R-3494
Resource Relation:
Other Information: PBD: 1968
Subject:
36 MATERIALS SCIENCE; DEBYE-SCHERRER METHOD; TOPOGRAPHY; URANIUM; URANIUM ALLOYS; X RADIATION
OSTI ID:
20547179
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR04R3494002786
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[56] pages
Announcement Date:

Citation Formats

Le Naour, L. X-ray topography of uranium alloys; Topographie aux rayons X d'alliages d'uranium. France: N. p., 1968. Web.
Le Naour, L. X-ray topography of uranium alloys; Topographie aux rayons X d'alliages d'uranium. France.
Le Naour, L. 1968. "X-ray topography of uranium alloys; Topographie aux rayons X d'alliages d'uranium." France.
@misc{etde_20547179,
title = {X-ray topography of uranium alloys; Topographie aux rayons X d'alliages d'uranium}
author = {Le Naour, L}
abstractNote = {A description of the structure of uranium alloys has been made using the data obtained by X-ray diffraction techniques derived from the Berg-Barrette method. In the first.stage the use of a monochromatic beam of X-rays having a very low divergence makes it possible to obtain very reproducible and exact numerical data concerning the grain and sub-grain sizes, and also the distribution of the sizes. It is thereby possible to detect any disorientation greater than 30 seconds of arc.The results obtained have been completed using a variable incidence device which- gives simultaneously an overall picture of a grain and an idea of the importance of internal disorientations; a more rigorous measurement of this latter parameter is then deduced from the Debye-Scherrer diagrams obtained using a fine-focus equipment. Observations are carried out on various one-phase or two phase uranium alloys which are compared successively to technical and to high-purity uranium. It is shown that the use of X-ray topographies, although limited in certain respects, allows a quantitative characterization of the structure. (author) [French] Une description des structures d'alliages d'uranium a ete faite a partir des donnees fournies par des techniques de diffraction de rayons X derivees de la methode de BERG--BARRETT. Dans une premiere etape, l'utilisation d'un faisceau de rayons X monochromatique et de tres faible divergence permet d'obtenir des donnees numeriques precises et tres reproductibles, relatives aux dimensions des grains, des sous-grains et a la distribution de ces grandeurs. Toute desorientation superieure a 30 secondes d'arc peut ainsi etre decelee. Les resultats obtenus ont ete completes en utilisant un montage a incidence variable, qui fournit simultanement l'image globale d'un grain et l'ordre de grandeur des desorientations internes; une mesure plus rigoureuse de ce dernier parametre se deduit ensuite de diagrammes DEBYE SHERRER realises avec un montage a foyer fin. Des observations sont effectuees sur differents alliages d'uranium, monophases ou biphases, que l'on compare successivement a l'uranium technique et a l'uranium de haute purete. On montre que l'usage des topographies aux rayons X, bien que comportant certaines limitations, permet une caracterisation quantitative des elements de la structure. (auteur)}
place = {France}
year = {1968}
month = {Jul}
}