Guinier-Preston zones

Guinier-Preston zones

[gēn′yā ′pres·tən ‚zōnz]
(metallurgy)
The initially formed zones of a precipitate as it comes out of solid solution.
References in periodicals archive ?
In precipitation-hardened aluminum alloys, the key manifestation of this phenomenon is the development of dispersoids, tiny clumps of metal oxides called Guinier-Preston zones.