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- W3126123354 endingPage "116682" @default.
- W3126123354 startingPage "116682" @default.
- W3126123354 abstract "The natural aging (NA) response of a commercial Al–Zn–Mg alloy has been tracked to investigate the effects of solute clusters on its mechanical properties. It has been observed that the increase of yield strength during NA is not accompanied by the degradation of uniform elongation due to the simultaneously enhanced strain hardening ability. As a consequence, the Al–Zn–Mg alloy with dense solute clusters shows a comparable yield strength, better strain hardening ability and uniform tensile strain relative to its artificially aged counterparts containing precipitates. This positive effect of solute clusters on strain hardening has been systematically studied by tracing the microstructure evolution during deformation through synchrotron X-ray diffraction and atom probe tomography. We found that the dislocation multiplication dominates over the entire deformation process until failure in NA alloys; however, no effect of solute clusters on the dislocation density evolution can be identified. On the other hand, solute clusters themselves dramatically evolve, showing a dissolution-to-coarsening transition during deformation, which can be understood on the basis of a kinetic model. The experimental evidence strongly suggest that the dislocation storage and strain-induced evolution of solute clusters are insufficient to account for the observed high strain hardening rate, and the contribution from other possible mechanisms are estimated in a semi-quantitative manner." @default.
- W3126123354 created "2021-02-01" @default.
- W3126123354 creator A5025938107 @default.
- W3126123354 creator A5029360035 @default.
- W3126123354 creator A5033077165 @default.
- W3126123354 creator A5063258989 @default.
- W3126123354 creator A5070724508 @default.
- W3126123354 creator A5072422702 @default.
- W3126123354 creator A5080113059 @default.
- W3126123354 creator A5083837714 @default.
- W3126123354 date "2021-04-01" @default.
- W3126123354 modified "2023-10-13" @default.
- W3126123354 title "Solute cluster evolution during deformation and high strain hardening capability in naturally aged Al–Zn–Mg alloy" @default.
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