Structural evolution and mechanical properties of metallic disordered materials influenced by the Bragg effect of ion irradiation

This project gives detailed research and simulation guidance for studying how metallic disordered materials change their structure and mechanical properties when they are hit by ions, with special attention to the Bragg‑peak effect. Disordered metals—such as amorphous alloys and metallic glasses—show unusual relaxation and deformation behavior in high‑energy radiation fields. The study uses computational tools like SRIM/TRIM to model ion‑solid interactions and Molecular Dynamics (MD) simulations to track atomic movements. The work examines how the concentrated energy deposited near the Bragg peak modifies short‑ and medium‑range atomic order. The research plan organizes a step‑by‑step analysis of: – radiation‑induced defects, – free‑volume distribution, – resulting changes in mechanical behavior, including hardness,

shear‑band formation, and resistance to crack propagation. By linking ion penetration depth and the profiles of electronic and nuclear energy loss to structural rejuvenation, the project helps develop amorphous materials that can tolerate radiation. The evaluation method provides a clear way to model displacement damage and thermal spikes, giving deeper insight into phase stability, mechanical degradation, and fracture toughness in harsh nuclear or aerospace environments.

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