Published in Acta Materialia: Laser powder bed fusion (LPBF)-induced heterostructures in Ti2AlNb alloy—an aerospace high-temperature lightweight structural material—achieve simultaneous strength and ductility improvement over a wide temperature range. This approach offers new insights for the additive manufacturing and property tuning of high-temperature titanium alloy powders, with direct reference value for users of aerospace and aero-engine high-temperature components.