"Quantifying geometrically necessary dislocation with surface roughness" by Weng Mei Kok, Hun Guan Chuah et al.
The present study investigated the geometrically necessary dislocation (GND) with the influence of the surface roughness by establishing the relation of roughness in GND for indentation. The single crystal copper with (111) oriented surface plane was chosen and polished to various roughness levels ranging from 32.7 to 224 nm and subjected to indentation. The increase in surface roughness revealed to increase in the GND and statistically stored dislocation density. As the indentation force decrea...
Copper 111 Eometrically Necessary Dislocation Lastic Strain Gradient Size Effect Tatistically Stored Dislocation Surface Roughness
Source: uow.edu.au