Constructing heterogeneous grain structure in Al–La–Sc alloy to overcome high-temperature softening

Key Points

• Improved high-temperature softening resistance is achieved through heterogeneous grain structures, enhancing alloy performance.
• Key evidence shows a significant reduction in softening at elevated temperatures, enhancing durability and application range.
• Analysis of grain structure diversity reveals its critical role in reducing softening at high temperatures, using Al–La–Sc alloys as a model.
• Highlights the potential of heterogeneous structures in Al–La–Sc alloys, paving the way for high-performance materials in extreme conditions.