Stabilizing Supersaturation with Extreme Grain Refinement in Spinodal Aluminum Alloys

© 2023 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 17 vom: 01. Apr., Seite e2303650
1. Verfasser: Xu, Wei (VerfasserIn)
Weitere Verfasser: Zhong, Yiming, Li, Xiuyan, Lu, K
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Schwarz crystal structure aluminum alloys grain boundary relaxation grain refinement spinodal decomposition
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520 |a Supersaturated solid solutions can be formed in alloys from various non-equilibrium processes, but stabilizing the metastable phases against decomposition is challenging, particularly the spinodal decomposition that occurs via chemical fluctuations without energy barriers to nucleation. In this work, it is found that spinodal decomposition in supersaturated Al(Zn) solid solutions can be inhibited with straining-induced extreme grain refinement. For the refined supersaturated grains at the nanoscale, their spinodal decomposition is obviously resisted by the relaxed grain boundaries and reduced lattice defects. As grains are refined below 10 nm the decomposition is completely inhibited, in which atomic diffusion is blocked by the stable Schwarz crystal structure with vacancy-free grains. Extreme grain refinement offers a general approach to stabilize supersaturated phases with broadened compositional windows for property modulation of alloys 
650 4 |a Journal Article 
650 4 |a Schwarz crystal structure 
650 4 |a aluminum alloys 
650 4 |a grain boundary relaxation 
650 4 |a grain refinement 
650 4 |a spinodal decomposition 
700 1 |a Zhong, Yiming  |e verfasserin  |4 aut 
700 1 |a Li, Xiuyan  |e verfasserin  |4 aut 
700 1 |a Lu, K  |e verfasserin  |4 aut 
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773 1 8 |g volume:36  |g year:2024  |g number:17  |g day:01  |g month:04  |g pages:e2303650 
856 4 0 |u http://dx.doi.org/10.1002/adma.202303650  |3 Volltext 
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