GUINIER-PRESTON ZONES IN AL-RICH AL-CU AND AL-AG SINGLE-CRYSTALS

Authors
SCHONFELD B MALIK A KOSTORZ G BUHRER W PEDERSEN JS
Citation
B. Schonfeld et al., GUINIER-PRESTON ZONES IN AL-RICH AL-CU AND AL-AG SINGLE-CRYSTALS, Physica. B, Condensed matter, 234, 1997, pp. 983-985
Citations number
9
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
234
Year of publication
1997
Pages
983 - 985
Database
ISI
SICI code
0921-4526(1997)234:<983:GZIAAA>2.0.ZU;2-B
Abstract
Guinier-Preston zones in <(Al)under bar>-Ag and <(Al)under bar>-Cu wer e investigated by diffuse X-ray and neutron scattering. In Al-3 at% Ag no differences are found between zones formed above and below 500 K ( epsilon- and eta-zones, respectively). Their average Ag concentration is (80 +/- 10) at%, and the Ag concentration decreases by 10-15% from shell to core of the zones. In Al-1.75 at% Cu, Guinier-Preston I zones are dominantly monolayers with a Cu fraction of (84 +/- 2) at%.