Phase transformations in commercial alloys 1424, V-1469, and 1441 during long-term low-temperature exposures

Лукина, Е. А.; Алексеев, А. А.; Антипов, В.В.; Khokhlatova, L. B.; Zhuravlev, P. L.

doi:10.1134/s0031918x11030240

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…However, the amount of Cu in this alloy can be ignored, meaning the absence of Cu containing GP zones. The principal strengthening δ' phase may contain magnesium along with lithium [10]. The magnesium concentrations in the solid solution leads to the formation of GP zones flanked by the lenticular δ' phase.…”

Section: Resultsmentioning

confidence: 99%

Grain Structure and Precipitates in Squeeze Casting Al-Li-Mg-Zr Alloy

Chen

Hao

2014

AMR

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Grain structure and precipitates in squeeze casting Al-Li-Mg-Zr alloy for aircraft industry were investigated in heat treated condition, using X-ray diffraction, optical microscopy and transmission electron microscopy. An ultra fine grained structure in sub-micrometer size was obtained, having fine nanograins in it with polycrystalline diffraction rings that are different from the single-crystal patterns in the matrix. Ultra fine grain areas are generally located on the grain boundaries and sub-grain boundaries. In addition, TEM observations indicates the presence of lenticular δ' (Al3Li) phases that symmetrical distributed around the GP zones. The alloy also contains spherical β' (Al3Zr) dispersoids, and S1 (Al2MgLi) phases.

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Section: Resultsmentioning

confidence: 99%

Grain Structure and Precipitates in Squeeze Casting Al-Li-Mg-Zr Alloy

Chen

Hao

2014

AMR

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“…Many commercially important alloys exhibit microstructural and phase changes that occur over time scales that may extend from months to years. These include topologically closepacked phase formation in the nickel-base superalloys used in gas turbine engines (Simonetti & Caron, 1998;Tin & Pollock, 2003;Acharya & Fuchs, 2004;Yang et al, 2007), phase separation and intermetallic precipitation in iron-based alloys used in power generation (Chung & Leax, 1990;Murayama et al, 1999;Danoix & Auger, 2000;Sourmail, 2001), and microstructural evolution in aluminium alloys (Braun, 2006;Katsikis et al, 2008;Lukina et al, 2011). Traditionally, these phenomena have been studied by ex situ examination of preexposed samples.…”

Section: Introductionmentioning

confidence: 99%