The present application relates to the field of high-end equipment manufacturing fusion nuclear energy
material hardness detection, and discloses a kind of nanohardness evaluation method of fusion energy material, comprising: obtaining the nanoin dentation
test data of material to be measured after no
irradiation and
ion irradiation;
Radiation induced defect
density distribution model is constructed, wherein x is material depth;Based on the
distribution model and
dislocation hardening theory, the evaluation model of the
hardness of material after
irradiation changes with the depth of indentation h is established;Based on the nanoin dentation
test data, the material parameters in the evaluation model are determined using piecewise fitting strategy to calculate and evaluate the nanohardness of material at different depths.The present application uses polynomial fitting defect
density distribution, which can more accurately describe the actual
ion irradiation damage gradient compared to power-law distribution.