Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-27T02:37:53.263Z Has data issue: false hasContentIssue false
  • English
  • Français

Diffuse Neutron Scattering and Short-Range Order in Alloys – Contrast Variation and Contrast Enhancement by Isotopic Replacement

Published online by Cambridge University Press:  26 February 2011

P.P. Mueller ,
L. Reinhard ,
B. Schoenfeld ,
G. Kostorz ,
W. Buehrer  and
O. Schaerpf
P.P. Mueller
Affiliation:
Institut für Angewandte Physik, Eidgenossische Technische Hochschule, CH-8093 Zürich
L. Reinhard
Affiliation:
Institut für Angewandte Physik, Eidgenossische Technische Hochschule, CH-8093 Zürich
B. Schoenfeld
Affiliation:
Institut für Angewandte Physik, Eidgenossische Technische Hochschule, CH-8093 Zürich
G. Kostorz
Affiliation:
Institut für Angewandte Physik, Eidgenossische Technische Hochschule, CH-8093 Zürich
W. Buehrer
Affiliation:
Lab. für Neutronenstreuung der ETHZ, c/o EIR, CH-5303 Würenlingen
O. Schaerpf
Affiliation:
Institut Laue-Langevin, F-38042 Grenoble-Cedex
Get access

Abstract

In Al-Cu alloys containing Guinier-Preston zones, the scattering contributions due to short-range order and atomic displacements vary differently when the scattering contrast between Al and Cu is changed. The diffuse neutron scattering of Al-Cu single crystals containing 63Cu or 65Cu is compared and evaluated to test the current methods of separating the two scattering contributions. - The nature of a sugggtted ordered state in α-brass is also studied by neutron scattering, using Cu to enhance the scattering contrast in a Cu-30 at.% Zn alloy. A broad diffuse peak is found in powdered, appropriately aged samples, confirming that the first Warren-Cowley short-range order parameter is negative.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 82: Symposium I – Characterization of Defects in Materials , 1986 , 85
Copyright
Copyright © Materials Research Society 1987

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

REFERENCES

1. Gerold, V. and Bubeck, E., Scripta Metall. 16, 1101 (1982).Google Scholar
2. Cohen, J.B. and Georgopoulos, P., Scripta Metall. 16, 1107 (1982).Google Scholar
3. Matsubara, E. and Cohen, J.B., Acta Metall. 33, 1945 (1985).Google Scholar
4. Trattner, D. and Pfeiler, W., J. Phys. F: Met. Phys. 13, 739 (1983).Google Scholar
5. Kussmann, A. and Wollenberger, H., Z. Metallkde. 50, 94 (1959).Google Scholar
6. tieFontaine, D., Acta Metall. 23, 553 (1975).CrossRefGoogle Scholar