Influence of small additions of zinc on the nature of the grain boundary precipitates in an AA 8090 alloy
Journal Article
·
· Scripta Materialia
- Defence Metallurgical Research Lab., Hyderabad (India)
In this paper results using transmission electron microscopy (TEM), electron diffraction and energy dispersive x-ray spectroscopy on the influence of small additions of Zn({approximately}0.25 at%) on the nature of the grain boundary precipitates in an AA 8090 alloy are presented to show that Zn is indeed detected in enhanced concentrations in association with both {delta} (AlLi) and T{sub 2}(Al{sub 6}CuLi{sub 3}) precipitates formed at the grain boundary. An addition of 0.6 wt% of Zn to an al-2.2Li-1.2Cu-0.8Mg-0.10Zr alloy does not either change the type of the coarse grain boundary precipitates, i.e., {delta} (AlLi) and T{sub 2} (Al{sub 6}CuLi{sub 3}) or reduce the width of the precipitate free zones (PFZs) adjacent to the grain boundary, while, it does change the chemistry of both {delta} and T{sub 2} via incorporation of Zn into these phases.
- OSTI ID:
- 554055
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 10 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
Similar Records
[delta] precipitation in an Al-Li-Cu-Mg-Zr alloy
Grain boundary precipitation in Al-Li-Cu alloys. [Al-3%Cu-2%Li and Al-1%Cu-2. 6%Li]
A quantitative interpretation of DSC experiments on quenched and aged SiC{sub P} reinforced 8090 alloys
Journal Article
·
Sun May 15 00:00:00 EDT 1994
· Scripta Metallurgica et Materialia; (United States)
·
OSTI ID:7236606
Grain boundary precipitation in Al-Li-Cu alloys. [Al-3%Cu-2%Li and Al-1%Cu-2. 6%Li]
Conference
·
· TMS (The Metallurgical Society) Paper Selection; (USA)
·
OSTI ID:5310477
A quantitative interpretation of DSC experiments on quenched and aged SiC{sub P} reinforced 8090 alloys
Journal Article
·
Fri Sep 15 00:00:00 EDT 1995
· Scripta Metallurgica et Materialia
·
OSTI ID:237848