Spatiotemporal mapping of alloy mesostructure dynamics via multimodal coherent X-ray diffraction imaging.

ABSTRACT: Understanding mesoscale structural dynamics of precipitation-strengthened alloys is essential for optimizing the mechanical performances of these alloys. Herein, we establish a multimodal coherent X-ray diffraction imaging framework for spatiotemporal mapping of mesoscale structural dynamics in precipitation-strengthened alloys. As a demonstrative application, we visualized the structural evolution in Mg₉₇Zn₁Gd₂ during isothermal annealing at 700 K, revealing real-time dynamics of nucleation, growth, and coarsening. Ptychographic reconstruction enabled imaging of microstructural transformations across a wide field of view (~100 μm²) with temporal resolution spanning several hours. We observed decomposition of (Mg, Zn)₃Gd and concurrent

SUBMITTER: Takazawa S 

PROVIDER: S-EPMC12478095 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature