Reprecipitation behavior in Al–Cu binary alloy after severe plastic deformation-induced dissolution of θ′ particles

Huang, Wenjie; Liu, Zhiyi; Lin, Michael; Zhou, Xuanwei; Zhao, Lei; Ning, Angang; Su-min, Zeng

doi:10.1016/j.msea.2012.03.010

Cited by 67 publications

(26 citation statements)

References 23 publications

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“…zones through DSC curve and Vickers hardness in artificial aged Al-4 wt.% Cu alloy subjected to SPD-induced redissolution of y' particle. This paper extends our previous work [25] and directly observes the formation of G.P. zones during nature aging using a modern three-dimensional atom probe.…”

Section: Introductionsupporting

confidence: 79%

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Severe plastic deformation-induced dissolution of θ" particles in Al–Cu binary alloy and subsequent nature aging behavior

Huang

Liu

Xia

et al. 2012

Materials Science and Engineering: A

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Section: Introductionsupporting

confidence: 79%

“…In previous works [25], the present authors have verified the existence of G.P. zones through DSC curve and Vickers hardness in artificial aged Al-4 wt.% Cu alloy subjected to SPD-induced redissolution of y' particle.…”

Section: Introductionsupporting

confidence: 65%

Severe plastic deformation-induced dissolution of θ" particles in Al–Cu binary alloy and subsequent nature aging behavior

Huang

Liu

Xia

et al. 2012

Materials Science and Engineering: A

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“…These investigations have shown that pre-existing precipitates can be fragmented and partially dissolved (i.e. in Al-Cu [30][31][32][33], Al-Cu-Mg [34]), whilst solute atoms can be redistributed and segregated to grain boundaries/dislocations (e.g. in AA7075…”

Section: Introductionmentioning

confidence: 99%

Strengthening of an Al–Cu–Mg alloy processed by high-pressure torsion due to clusters, defects and defect–cluster complexes

Chen

Gao

Sha

et al. 2015

Materials Science and Engineering: A

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A physically-based model is established to predict the strength of cluster strengthened ultrafine-grained ternary alloys processed by severe plastic deformation. The model incorporates strengthening due to dislocations, grain refinement, co-clusters (due to short range order and modulus strengthening) and solute segregation. The model is applied to predict strengthening in an Al-Cu-Mg alloy processed by high-pressure torsion (HPT). The microstructure was investigated using transmission electron microscopy (TEM), atom probe tomography (APT), and X-ray diffraction (XRD). Analysis of XRD line profile broadening shows that the dislocation density increases significantly due to severe plastic deformation, which contributes to the increase of strength. APT reveals the presence of nanoscale coclusters and defect-solute clustering. The concepts of the multiple local interaction energies between solutes and dislocations were used to quantitatively explain the strengthening 2 mechanisms. The model shows a good correspondence with measured microstructure data and measured strength.

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“…With the increase of pre-aging time, both the volume fraction and the size of the precipitation phase increase. These precipitates (GPB/S /S) would (partially) dissolve in the rolling process and the dissolution of these deformable precipitates is attributed to the release of the strain energy and the interfacial energy accumulated in the precipitate during rolling, as well as the release of the interfacial energy of the S phase/matrix [17].…”

Section: Precipitation Evolutionmentioning

confidence: 99%

Effect of Precipitate Embryo Induced by Strain on Natural Aging and Corrosion Behavior of 2024 Al Alloy

Zhang

Luo

et al. 2018

Coatings

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Pre-aging precipitates in 2024 Al alloy re-dissolved during rolling, and Mg and Cu atoms were enriched in the dislocation structure to form "precipitate embryo", which is beneficial for the formation of second phase during the subsequent natural aging process. Due to the solubility of the large precipitate particles during deformation, the precipitates in the natural aging 2024 Al alloy were consist of two parts: The undissolved pre-precipitates and the natural aging precipitates derived from the embryos. The electrochemical corrosion behavior and passive film of the samples with different pre-aging time and strain were investigated by electrochemical tests and SEM. The results showed that the corrosion resistance and the passive film performance were deteriorated with the increase of pre-aging time due to the simultaneous increase of the quantity of the two-parts precipitates. The corrosion resistance can be improved by the increase of strain, because there will be smaller grain size and the existence of large undissolved precipitates in smaller strain samples.

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Reprecipitation behavior in Al–Cu binary alloy after severe plastic deformation-induced dissolution of θ′ particles

Cited by 67 publications

References 23 publications

Severe plastic deformation-induced dissolution of θ" particles in Al–Cu binary alloy and subsequent nature aging behavior

Severe plastic deformation-induced dissolution of θ" particles in Al–Cu binary alloy and subsequent nature aging behavior

Strengthening of an Al–Cu–Mg alloy processed by high-pressure torsion due to clusters, defects and defect–cluster complexes

Effect of Precipitate Embryo Induced by Strain on Natural Aging and Corrosion Behavior of 2024 Al Alloy

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