Enhancing the intergranular corrosion resistance and mechanical properties of Al–Mg–xSi–Cu–Zn alloys by synergistic intergranular and intragranular precipitation behaviors

Enhancing the intergranular corrosion resistance and mechanical properties of Al–Mg–xSi–Cu–Zn alloys by synergistic intergranular and intragranular precipitation behaviors

Zhu, Liang (University of Science and Technology Beijing)
Guo, Mingxing (University of Science and Technology Beijing)
Li, G. (TU Delft Team Maria Santofimia Navarro)
Zhang, Jishan (University of Science and Technology Beijing)

2022

The intergranular corrosion (IGC) resistance of age-hardening Al–Mg–Si–Cu alloys is closely related to the precipitation behavior adjacent to grain boundaries. In this study, we proposed to regulate the interaction of solute atoms and solute partitioning of Zn-containing Al–Mg–xSi–Cu alloys by introducing dislocations, which can synergistically decorate the intergranular and intragranular precipitation behavior. Consequently, the continuity of grain boundary precipitates and width of solute-depleted precipitate-free zones are inhibited accompanied with high number density or coarse precipitate in the matrix. As a result, the IGC resistance is greatly improved without strength and ductility loss, and the related mechanism has been proposed.

http://resolver.tudelft.nl/uuid:17da4ee9-4023-4309-80ea-5e3366832a6b

https://doi.org/10.1007/s10853-022-07527-8

2023-07-01

0022-2461

Journal of Materials Science, 57 (30), 14490-14510

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

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© 2022 Liang Zhu, Mingxing Guo, G. Li, Jishan Zhang