Advances in Microstructural Understanding of Wrought Aluminum Alloys

Robson, James; Engler, Olaf; Sigli, Christophe; Deschamps, A.; Poole, Warren J.

doi:10.1007/s11661-020-05908-9

Cited by 28 publications

(7 citation statements)

References 137 publications

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“…Alloying elements such as Cu, Mg, Si, Zn, Li, Sc are added into Al to allow Al2Cu, Al2CuLi, Mg5Si4Al2, Mg2Si, MgZn2, Al3Sc intermetallics to precipitate through suitable heat treatment [31,33]. Further, some transition elements, e.g., Cr, Mn or Zr, can be added to form Al12Mg2Cr, Al20CuMn3, Al12Mn3Si and Al3Zr dispersoid particles to allow control of grain structure during thermo-mechanical processing [52]. The coherency, volume fraction and distribution of these particles plays a key role in strengthening.…”

Section: Aluminium Alloys and Their Applicationsmentioning

confidence: 99%

A review of Laser Powder Bed Fusion Additive Manufacturing of aluminium alloys: Microstructure and properties

Kotadia

Gibbons

Das

et al. 2021

Additive Manufacturing

142

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Section: Aluminium Alloys and Their Applicationsmentioning

confidence: 99%

A review of Laser Powder Bed Fusion Additive Manufacturing of aluminium alloys: Microstructure and properties

Kotadia

Gibbons

Das

et al. 2021

Additive Manufacturing

142

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“…In recent years, microalloying has become a popular and effective strategy for strengthening the high-temperature properties of aluminum alloys [27,28]. On the one hand, microalloying elements can make solute atoms in Al-Cu alloys polarize at the θ ′ interface, causing solute resistance and lowering the interfacial energy to regulate the nucleation and growth of the Al 2 Cu phase, thus improving the high-temperature stability of the θ ′ precipitated phase [23,29].…”

Section: Introductionmentioning

confidence: 99%

Influence of Zr Microalloying on the Microstructure and Room-/High-Temperature Mechanical Properties of an Al–Cu–Mn–Fe Alloy

Liu,

Hu,

et al. 2024

Materials

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Here, 0.3 wt.%Zr was introduced in an Al-4 wt.%Cu-0.5 wt.%Mn-0.1 wt.%Fe alloy to investigate its influence on the microstructure and mechanical properties of the alloy. The microstructures of both as-cast and T6-treated Al–Cu–Mn–Fe (ACMF) and Al–Cu–Mn–Fe–Zr (ACMFZ) alloys were analyzed. The intermetallic compounds formed through the casting procedure include Al2Cu and Al7Cu2Fe, and the Al2Cu phase dissolves into the matrix and re-precipitates as θ′ phase during the T6 process. The introduction of Zr results in the precipitation of L12-Al3Zr nanometric precipitates after T6, while the θ′ precipitates in ACMFZ alloy are much finer than those in ACMF alloy. The L12-Al3Zr precipitates were found coherently located with θ′, which was assumed beneficial for stabilizing the θ′ precipitates during the high-temperature tensile process. The tensile properties of ACMF and ACMFZ alloys at room temperature and elevated temperatures (200, 300, and 400 °C) were tested. Especially, the yield strength of ACMFZ alloys can reach 128 MPa and 65 MPa at 300 °C and 400 °C, respectively, which are 31% and 33% higher than those of ACMF alloys. The strengthening mechanisms of grain size, L12-Al3Zr, and θ′ precipitates on the tensile properties were discussed. This work may be referred to for designing Al–Cu alloys for application in high-temperature fields.

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“…The small-angle scattering (SAS) of X-rays (SAXS) or neutrons (SANS) is an alternative technique that provides information about the size, size distribution, volume fraction, and morphology of precipitates from a considerably larger sampling volume [ 18 , 19 ]. Although these techniques cannot uniquely distinguish between different types of precipitates in multi-phase alloys, they have their strengths, particularly for binary systems [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Zr-Containing Dispersoids in Al–Zn–Mg–Cu Alloys by Small-Angle Scattering

Honaramooz

Morak²,

Pogatscher

et al. 2023

Materials

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The characterization of Zr-containing dispersoids in aluminum alloys is challenging due to their broad size distribution, low volume fraction, and heterogeneous distribution within the grains. In this work, small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) were compared to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) regarding their capability to characterize Zr-containing dispersoids in aluminum alloys. It was demonstrated that both scattering techniques are suitable tools to characterize dispersoids in a multi-phase industrial 7xxx series aluminum alloy. While SAXS is more sensitive than SANS due to the high electron density of Zr-containing dispersoids, SANS has the advantage of being able to probe a much larger sample volume. The combination of both scattering techniques allows for the verification that the contribution from dispersoids can be separated from that of other precipitate phases such as the S-phase or GP-zones. The size distributions obtained from SAXS, SANS and TEM showed good agreement. The SEM-derived size distributions were, however, found to significantly deviate from those of the other techniques, which can be explained by considering the resolution-limited restrictions of the different techniques.

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Advances in Microstructural Understanding of Wrought Aluminum Alloys

Cited by 28 publications

References 137 publications

A review of Laser Powder Bed Fusion Additive Manufacturing of aluminium alloys: Microstructure and properties

A review of Laser Powder Bed Fusion Additive Manufacturing of aluminium alloys: Microstructure and properties

Influence of Zr Microalloying on the Microstructure and Room-/High-Temperature Mechanical Properties of an Al–Cu–Mn–Fe Alloy

Characterization of Zr-Containing Dispersoids in Al–Zn–Mg–Cu Alloys by Small-Angle Scattering

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