Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-11T07:44:27.518Z Has data issue: false hasContentIssue false

Guinier-Preston I Zones in AL-1.75 at.% Cu Single Crystals

Published online by Cambridge University Press:  28 February 2011

P.P. Mueller
Affiliation:
lnow at: Interkeller AG, CH-8306 Brittisellen, Switzerland
B. Schonfeldc
Affiliation:
Inst.f.Angewandte Physik, ETH Zürich, CH-8093 Zürich, Switzerland
G. Kostorz
Affiliation:
Inst.f.Angewandte Physik, ETH Zürich, CH-8093 Zürich, Switzerland
W. Buehrersc
Affiliation:
LNS/ETHZ, c/o PSI, CH-5303 Wirenlingen, Switzerland
Get access

Abstract

The elastic diffuse neutron scattering from two Al-1.75 at.% Cu single crystals with either the isotope Cu-63 or Cu-65, aged to contain type-I Guinier-Preston zones has been measured along a reciprocal lattice line and evaluated based on an expansion of the atomic displacement scattering up to terms of third order. It is shown that erroneous results for the short-range order term are obtained if the evaluation does not include data from the first Brillouin zone. The most reliable short-range order scattering extracted for both crystals is consistent with essentially single-layered Cu-rich zones.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Cohen, J.B., Solid State Phys. 39, 131 (1986).CrossRefGoogle Scholar
2. Gerold, V., Z. Metallkde. 45, 599 (1954).Google Scholar
3. Auvray, X., Georgopoulos, P., Cohen, J.B., Acta Metall. 29, 1061 (1981).CrossRefGoogle Scholar
4. Matsubara, E. and Cohen, J.B., Acta Metall. 33, 1945 (1985).Google Scholar
5. Georgopoulos, P. and Cohen, J.B., J. Phys. 12.C7, 191 (1977).Google Scholar
6. Gerold, V. and Bubeck, E., Scripta Metall. 16, 1101 (1982).CrossRefGoogle Scholar
7. Gerold, V., Scripta Metall. 22, 927 (1988) and subsequent papers.Google Scholar
8. Müller, P.P., Schbnfeld, B., Kostorz, G. and BUhrer, W., Scripta Metall. 22, 959 (1988).Google Scholar
9. Borie, B. and Sparks, C.J., Acta Cryst. A27, 198 (1971).CrossRefGoogle Scholar
10. Sears, V.F., Thermal-Neutron Scattering Lengths and Cross Sections for Condensed-Matter Research, Report Nr. AECL-8490 (Atomic Energy of Canada Ltd., Chalk River, Ont., 1984).Google Scholar