241 research outputs found
Complementary use of TEM and APT for the investigation of steels nanostructured by severe plastic deformation
The properties of bulk nanostructured materials are often controlled by
atomic scale features like segregation along defects or composition gradients.
Here we discuss about the complimentary use of TEM and APT to obtain a full
description of nanostructures. The advantages and limitations of both
techniques are highlighted on the basis of experimental data collected in
severely deformed steels with a special emphasis on carbon spatial
distribution
Complex Precipitation Pathways in Multi-Component Alloys
One usual way to strengthen a metal is to add alloying elements and to
control the size and the density of the precipitates obtained. However,
precipitation in multicomponent alloys can take complex pathways depending on
the relative diffusivity of solute atoms and on the relative driving forces
involved. In Al-Zr-Sc alloys, atomic simulations based on first-principle
calculations combined with various complementary experimental approaches
working at different scales reveal a strongly inhomogeneous structure of the
precipitates: owing to the much faster diffusivity of Sc compared with Zr in
the solid solution, and to the absence of Zr and Sc diffusion inside the
precipitates, the precipitate core is mostly Sc-rich, whereas the external
shell is Zr-rich. This explains previous observations of an enhanced nucleation
rate in Al-Zr-Sc alloys compared with binary Al-Sc alloys, along with much
higher resistance to Ostwald ripening, two features of the utmost importance in
the field of light high-strength materials
II. De quelques ouvrages anglais relatifs Ă la Gascogne
Bémont Charles. II. De quelques ouvrages anglais relatifs à la Gascogne. In: Annales du Midi : revue archéologique, historique et philologique de la France méridionale, Tome 33, N°131-132, 1921. pp. 166-169
Chronique de céramologie de la Gaule
Bémont Colette. Chronique de céramologie de la Gaule. In: Revue des Études Anciennes. Tome 97, 1995, n°3-4. pp. 633-643
Chronique de céramologie de la Gaule
Bémont Colette. Chronique de céramologie de la Gaule. In: Revue des Études Anciennes. Tome 83, 1981, n°3-4. pp. 319-329
Chronique de céramologie de la Gaule
Bémont Colette. Chronique de céramologie de la Gaule. In: Revue des Études Anciennes. Tome 85, 1983, n°1-2. pp. 89-98
Décors à colonnettes sur des bols de sigillée claire B
Bémont Colette. Décors à colonnettes sur des bols de sigillée claire B. In: Gallia, tome 28, fascicule 2, 1970. pp. 214-234
Vases à parois fines de Glanum : formes et décors
Bémont Colette. Vases à parois fines de Glanum : formes et décors. In: Gallia, tome 34, fascicule 1, 1976. pp. 237-278
CĂ©ramologie de la Gaule romaine
Bémont Colette. Céramologie de la Gaule romaine. In: École pratique des hautes études. 4e section, sciences historiques et philologiques. Livret 5. Rapports sur les conférences des années 1987-1988 & 1988-1989. 1994. pp. 52-53
La mairie et la jurade dans les villes de la Guyenne anglaise : La RĂ©ole
Bémont Charles. La mairie et la jurade dans les villes de la Guyenne anglaise : La Réole. In: Annales du Midi : revue archéologique, historique et philologique de la France méridionale, Tome 31, N°121-122, 1919. pp. 1-34
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