Effect of plastic deformation on the formation and dissolution of transition phases in Al-12wt.% Mg alloy

Hamana, D.; Bouchear, M.; Derafa, A.

doi:10.1016/s0254-0584(98)00191-6

Cited by 35 publications

(15 citation statements)

References 11 publications

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“…In our study, cold deformation leads to an early aging peak time compared with the specimen without cold deformation. In other words, it accelerates the aging response, which is consistent with the previous findings (Ref 1,2,4,5,14). However, no precipitation hardening occurred in aging Specimen D, and conversely the monotonic drop in hardness with aging time indicates a temperature-dependent recovery softening effect.…”

Section: Aging Responsesupporting

confidence: 91%

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Liao

Cai

Jing

et al. 2011

J. of Materi Eng and Perform

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Effect of multi-pass cold-rolling on the mechanical properties and microstructure of a near-eutectic Al-12%Si-0.2%Mg casting alloy was investigated. Optical microscopy, SEM, and TEM were employed to resolve the as-rolled microstructure, and the microstructure of samples after aging treatment. It has been found that Brinell hardness increases considerably with rolling reduction ratio; and further annealing leads to a remarkable drop in hardness. Two mechanisms, namely precipitation hardening and recovery softening, were found to develop simultaneously in the subsequent aging treatment following cold rolling. In contrast, recovery softening dominated the aging of cold-rolled specimen with prior intermediate annealing.Tensile properties were also performed to measure the effect of cold rolling and subsequent aging treatment.

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Section: Aging Responsesupporting

confidence: 91%

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Liao

Cai

Jing

et al. 2011

J. of Materi Eng and Perform

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“…This was attributed to the heterogeneous precipitation of ␤ 1 (FCC) phase by the authors [10]. Such a thermomechanical processing with predeformation between solution treatment and artificial aging is extensively used in aluminum alloys [11][12][13][14], but rarely in magnesium alloys. Therefore, it should be meaningful to introduce pre-deformation practice into magnesium alloys, especially the newly developed high strength Mg-RE alloys, and perform further study on the structure-property relationships.…”

Section: Introductionmentioning

confidence: 99%

Effect of pre-deformation on aging characteristics and mechanical properties of a Mg–Gd–Nd–Zr alloy

Zheng

Dong

Zeng

et al. 2008

Materials Science and Engineering: A

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“…By contrast, a variety of experimental techniques suggest that 0 (approximate composition Al 3 Mg 2 ) and (-Mn Al 3 Mg 2 ) particles precipitate preferentially along grain boundaries [5], independently of GP zones and 00 particles [6]. Although the precipitate sequence does not change, plastic deformation does increase the number of particles formed [7]. The addition of different atomic species further complicates the precipitate behaviour [8].…”

Section: Introductionmentioning

confidence: 99%

Prediction of dislocation nucleation during nanoindentation of Al₃Mg by the orbital-free density functional theory local quasicontinuum method

Hayes

Ortiz

et al. 2006

Philosophical Magazine

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The first-principles prediction of dislocation nucleation in metallic systems subject to realistically sized indenters requires a multiscale approach due to the prohibitive computational expense. The largest empirical atomistic simulations include at most a billion atoms, at the same time requiring the parameterization of new interactions whenever an additional species or crystal structure is added. The multiscale orbital-free density functional theory-local quasicontinuum (OFDFT-LQC) method overcomes these problems by using first-principles OFDFT to capture the atomic interactions while relying upon LQC to evolve the macroscopic system. We use this method to indent the (111) surface of a 2 Â 2 Â 1 mm piece of L1 2 Al 3 Mg. Using a localization criterion, the first dislocation is predicted to form off-axis on the ð111Þ slip plane in the ½011 direction after the indenter has penetrated 70 nm. Other popular dislocation nucleation criteria give different predictions. These results are strikingly similar to those for indentation into the (111) surface of Al, indicating that the underlying crystal structure, not the atomic identity, is the most important factor in determining the onset of plasticity.

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Effect of plastic deformation on the formation and dissolution of transition phases in Al-12wt.% Mg alloy

Cited by 35 publications

References 11 publications

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Effect of pre-deformation on aging characteristics and mechanical properties of a Mg–Gd–Nd–Zr alloy

Prediction of dislocation nucleation during nanoindentation of Al₃Mg by the orbital-free density functional theory local quasicontinuum method

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Effect of plastic deformation on the formation and dissolution of transition phases in Al-12wt.% Mg alloy

Cited by 35 publications

References 11 publications

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

Effect of pre-deformation on aging characteristics and mechanical properties of a Mg–Gd–Nd–Zr alloy

Prediction of dislocation nucleation during nanoindentation of Al3Mg by the orbital-free density functional theory local quasicontinuum method

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Prediction of dislocation nucleation during nanoindentation of Al₃Mg by the orbital-free density functional theory local quasicontinuum method