Search: onr:"swepub:oai:lup.lub.lu.se:9ea9edf6-0f4f-4596-9c55-29a35983622c" >
GP-zones in Al-Zn-M...
GP-zones in Al-Zn-Mg alloys and their role in artificial aging
-
- Berg, LK (author)
- University of Oslo
-
- Gjonnes, J (author)
- University of Oslo
-
- Hansen, V (author)
- University of Oslo
-
show more...
-
- Li, XZ (author)
- University of Oslo
-
- Knutson-Wedel, M (author)
- Chalmers University of Technology
-
- Waterloo, G (author)
- Norsk Hydro ASA
-
- Schryvers, D (author)
- University of Antwerp
-
- Wallenberg, LR (author)
- Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
-
show less...
-
(creator_code:org_t)
- 2001
- 2001
- English 9 s.
-
In: Acta Materialia. - 1359-6454. ; 49:17, s. 3443-3451
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The structure of GP-zones in an industrial, 7xxx-series Al–Zn–Mg alloy has been investigated by transmission electron microscopy methods: selected area diffraction, conventional and high-resolution imaging. Two types of GP-zones, GP(I) and (II) are characterized by their electron diffraction patterns. GP(I)-zones are formed over a wide temperature range, from room temperature to 140–150°C, independently of quenching temperature. The GP(I)-zones are coherent with the aluminum matrix, with internal ordering of Zn and Al/Mg on the matrix lattice, suggested to be based on AuCu(I)-type sub-unit, and anti-phase boundaries. GP(II) are formed after quenching from temperatures above 450°C, by aging at temperatures above 70°C. The GP(II)-zones are described as zinc-rich layers on {111}-planes, with internal order in the form of elongated domains. The structural relation to the η′-precipitate is discussed.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- aluminum alloys
- transmission electron microscopy (TEM)
- electron diffraction
- nucleation growth
- Guinier-Preston zones
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database