Precipitation of T<sub>1</sub> phase in 2198 Al–Li alloy studied by atomic-resolution HAADF-STEM

Lv, Kexin; Zhu, Chenyang; Zheng, Jianting; Wang, Xiaodong; Chen, Bin

doi:10.1557/jmr.2019.136

Cited by 21 publications

(9 citation statements)

References 15 publications

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“…The nanometric T1 phase presents a thin needle morphology (Figure 2a) and its presence was confirmed by SAED pattern (Figure 2b), as reported in literature of similar Al-Cu-Li alloy 58 . It is formed during aging and precipitates at dislocations, subgrain/grain boundaries, and slip bands 59 . Besides, in a previous work 60 DSC analyses showed that natural aging causes minor precipitation of T1 phase in Al-Li alloys when compared with artificial aging.…”

Section: Resultsmentioning

confidence: 99%

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

et al. 2020

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In the present work, the microstructure, electrochemical behavior and localized corrosion of the AA2198-T851 Al-Cu-Li alloy were studied. The microstructure was correlated with corrosion results obtained by immersion, gel visualization and scanning electrochemical microscopy (SECM) tests. Immersion and gel visualization tests showed high kinetics of corrosion attack during the first hours of immersion. SECM analyzes by means of surface generation/tip collection (SG/TC) mode detected hydrogen evolution generated during spontaneous corrosion from severe localized corrosion (SLC) sites on the metal surface. SECM results revealed sites of intense hydrogen evolution after 2 h of immersion and increased amounts of corrosion products after 4 h of immersion. Hydrogen evolution sites detected by SECM were associated with severe localized corrosion (SLC).

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Section: Resultsmentioning

confidence: 99%

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

et al. 2020

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“…1 which indicate the presence of d 0 . In the case of the technical alloy, the microstructure is also known to be complex consisting of structurally different T1 precipitates in the same alloy [62,63]. In a similarly aged alloy for example, Ha ¨usler et al [62] could identify (at least) two different T1 states.…”

Section: X-ray Raman Spectroscopymentioning

confidence: 99%

The Li stance on precipitation in Al–Li-based alloys: an investigation by X-ray Raman spectroscopy

et al. 2022

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Decomposition and precipitation processes in a binary Al–Li alloy and a technical Al–Li–Cu–Mg alloy were investigated using differential scanning calorimetry and X-ray Raman spectroscopy (XRS). The formation of $$\delta $$ δ ’ and T1 precipitates in the Al–Li and the T8 heat-treated Al–Li–Cu–Mg alloy, respectively, was confirmed using DSC. The XRS measurements complemented by simulated spectra allowed for probing specifically Li and its environment within the Al matrix. Based on linear combination fits of the XRS spectra, the relative contributions of $$\delta '$$ δ ′ and T1 precipitates were quantified. These results are in agreement with estimates of the relative amount of Li taking part in the precipitation process. Difficulties and limitations of the application of XRS to Al alloy systems are also discussed.

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“…However, AA2198 consists of an elongated grain structure. The microstructure of the base metals was detailed in Zhu et al [28] and Lv et al [29].…”

Section: Base Materialsmentioning

confidence: 99%

Effect of heat treatments on microstructural and mechanical characteristics of dissimilar friction stir welded 2198/2024 aluminum alloys

Khalilabad

Zedan

Texier

et al. 2021

Journal of Adhesion Science and Technology

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Precipitation of T₁ phase in 2198 Al–Li alloy studied by atomic-resolution HAADF-STEM

Abstract: Abstract

Cited by 21 publications

References 15 publications

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

The Li stance on precipitation in Al–Li-based alloys: an investigation by X-ray Raman spectroscopy

Effect of heat treatments on microstructural and mechanical characteristics of dissimilar friction stir welded 2198/2024 aluminum alloys

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Precipitation of T1 phase in 2198 Al–Li alloy studied by atomic-resolution HAADF-STEM

Abstract: Abstract

Cited by 21 publications

References 15 publications

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

Microstructural, Electrochemical and Localized Corrosion Characterization of the AA2198-T851 Alloy

The Li stance on precipitation in Al–Li-based alloys: an investigation by X-ray Raman spectroscopy

Effect of heat treatments on microstructural and mechanical characteristics of dissimilar friction stir welded 2198/2024 aluminum alloys

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Precipitation of T₁ phase in 2198 Al–Li alloy studied by atomic-resolution HAADF-STEM