Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al–Mg alloys

Locking structure to high temperature Because of atomic diffusion, metal alloys with nanometer-sized crystal grains do not retain their structure at high temperature. Xu et al . found that a minimum-interface structure allows a supersaturated aluminum-magnesium alloy to be retained at temperatures higher than the melting point. This system is known for high atomic diffusivity, highlighting the importance of the underlying interface structure. These observations have implications for designing structural alloys for high-temperature applications. —BG