PARTIAL REVERSION OF SMALL GP ZONES IN AN AL-ZN BINARY ALLOY

Authors
OKUDA H TANAKA M OSAMURA K AMEMIYA Y
Citation
H. Okuda et al., PARTIAL REVERSION OF SMALL GP ZONES IN AN AL-ZN BINARY ALLOY, Journal of applied crystallography, 30(2), 1997, pp. 592-596
Citations number
15
Journal title
Journal of applied crystallography → ACNP
ISSN journal
00218898
Volume
30
Issue
2
Year of publication
1997
Part
5
Pages
592 - 596
Database
ISI
SICI code
0021-8898(1997)30:2<592:PROSGZ>2.0.ZU;2-#
Abstract
The reversion process of very small Guinier-Preston (GP) zones in Al-Z n binary alloys has been studied by time-resolved synchrotron-radiatio n small-angle X-ray scattering (SR-SAXS) measurements. Al-15 at.% Zn a lloys with GP zones of 1.0 to 1.3 nm in radius formed by aging at 274 K were up-quenched up to 463 K. During reversion, the Guinier radius i ncreased rapidly while the integrated intensity decreased. This rapid increase of the radius was completely different from what was found du ring the reversion of larger GP zones above the miscibility gap. It is concluded that a process of simultaneous dissolution and coarsening h as been observed.