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Observations of G-P Zone Reversion in Al-Zn-Mg Alloys by Small-Angle X-Ray Scattering and Transmission Electron Microscopy

Published online by Cambridge University Press:  06 March 2019

R. W. Gould  and
E. A. Starke Jr.
R. W. Gould
Affiliation:
University of Florida, Gainsville, Florida
E. A. Starke Jr.
Affiliation:
University of Florida, Gainsville, Florida
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Abstract

A study of the reversion process in Al-Zn-Mg alloys has been made using small-angle X-ray scattering and transmission electron microscopy techniques. The rate and mode of Guinier-Preston zone dissolutions was investigated as a function of magnesium content, prior zone radius, and reversion temperature. Results indicate that in this system the reversion process is characterized by the preferential dissolution of the smallest G-P zones present after cold aging with a corresponding decrease in the volume fraction of zones. The amount of reversion at a specific temperature is dependent on magnesium content, however, the rate of reversion is independent of magnesium content.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 9: Fourteenth Annual Conference on Applications of X-ray Analysis, August 25-27, 1965 , 1965 , pp. 59 - 73
Copyright
Copyright © International Centre for Diffraction Data 1965

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