Improved radiation resistance in metals via adaptive martensitic transformation.

ABSTRACT: Materials typically experience serious microstructure and performance degradations under irradiation in nuclear reactors. To explore radiation-resistant metals with high design flexibility is urgently requested for the safe application of nuclear energy. In this work, we discover an anti-radiation mechanism for this purpose in a gradient nanostructured nuclear grade austenitic stainless steel prepared by a flexible surface nano-crystallization approach. A special 3-dimensional microstructure network, consisting of low-energy grain boundaries, stacking faults, and dislocation networks, is introduced in the nanostructure, so that a large-scale adaptive martensitic transformation mechanism is activated under irradiation even at extremely high radiation doses and high temperatures. Consequentl

SUBMITTER: Zhang S 

PROVIDER: S-EPMC12698717 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature