Figure 7
From: Effects of precipitates and dislocation loops on the yield stress of irradiated iron
Close-up view of the 3D structure of a dislocation system with glissile dislocation loops and strong precipitates at a strain of ε = 0.74%. Different Burgers vectors are indicated with different colors as follows: dark blue \(b=\frac{1}{2}\langle 111\rangle \), cyan \(b=\frac{1}{2}\langle 11\bar{1}\rangle \), green \(b=\frac{1}{2}\langle \bar{1}11\rangle \), and red \(b=\frac{1}{2}\langle 1\bar{1}1\rangle \). Dislocations (lines) evolve into a complex network where they pin to each other. Overcoming the precipitates (red spheres) has left Orowan loops around some of the obstacles. Both loops and precipitates act as obstacles for dislocation motion. Precipitate size parameter is R p  = 5 nm and the loop radius is r l  = 5 nm.
