In August 2026, the journal Additive Manufacturing — a leading publication in the field of additive manufacturing — published a paper by the research team from the Institute of Metal Research, Chinese Academy of Sciences, titled "Mesoscale Microstructure-Dependent Stress Rupture Behavior and Service Adaptation Mechanism of L-PBF Additively Manufactured Nickel-Based Superalloy" (DOI: 10.1016/j.addma.2026.105348). The first author is Peng Wang, with co-authors including Jingjing Liang, Jinguo Li, Yizhou Zhou, and others. The study focuses on the stress rupture behavior of nickel-based superalloys produced by laser powder bed fusion (L-PBF) under high-temperature service conditions. It reveals how mesoscale microstructural features — such as grain orientation, sub-grain boundaries, and stray grains — govern stress rupture life and fracture modes, establishing a microstructure–property–service adaptation linkage. This provides a theoretical basis for evaluating the creep/rupture performance of additively manufactured superalloys used in hot-section components such as turbine disks and blades. Superalloy powders are the highest-value and most technically challenging category in metal additive manufacturing. Their creep and rupture performance directly determines whether hot-section components in aero engines and gas turbines can be put into service. This research on mesoscale microstructure–rupture property correlations offers a theoretical anchor for optimizing the entire "powder–process–post-treatment" chain. For powder purchasers, the key takeaways are: (1) Quality evaluation of L-PBF superalloy powders (e.g., Inconel 718, GH3536, K477) will place greater emphasis on batch-to-batch mesoscale microstructure consistency; the effects of particle size distribution, oxygen content, and sphericity on stray grain and sub-grain boundary formation become key procurement technical indicators. (2) The process–microstructure control approach in this paper can be leveraged to co-develop specialized powder grades with suppliers that offer enhanced crack resistance and high creep/rupture performance. (3) It is recommended to track the process validation and data accumulation efforts of leading domestic superalloy powder suppliers in this direction.