1：Experimental Design and Method Selection:

The study involved fabricating differently structured nanocomposite materials based on Cu-Fe-Ag using a novel solid-state route, combining severe plastic deformation with thermal and electrochemical treatments. The influence of different interface types and spacings on radiation effects was investigated using nanoindentation.

2：Sample Selection and Data Sources:

The materials were fabricated from copper, iron, and silver powders mixed together at a ratio of 50 at.% Cu, 25 at.% Fe, and 25 at.% Ag. The mixture was compacted using hot-isostatic pressing (HIP) and subsequently deformed via high-pressure torsion (HPT).

3：List of Experimental Equipment and Materials:

Equipment included a high-pressure torsion (HPT) tool, a muffle furnace for heat treatments, a potentiostat for potentiostatic dealloying, a field emission scanning electron microscope (SEM), a dual beam Focused Ion Beam (FIB)-SEM, a transmission electron microscope (TEM), and energy dispersive X-ray spectroscopy (EDX) for material composition characterization.

4：Experimental Procedures and Operational Workflow:

The process involved HIP, HPT deformation, heat treatments at different temperatures to achieve nanocrystalline (NC) and ultra-fine grained (UFG) materials, and potentiostatic dealloying to create nanoporous (NP) materials. The materials were then irradiated with 1 MeV protons and analyzed using nanoindentation.

5：Data Analysis Methods:

Nanoindentation results were analyzed following the method of Oliver and Pharr. The Gibson-Ashby equations were applied to estimate the porosity under each indent for NP materials.