OKMC cascade simulation movie. In this movie both C15 and cascade overlap were considered and the relax- ation time between cascades is 100 ns. Green, blue, yellow, pink, orange, black and purple represent vacancies, interstitials, vacancy clus- ters, interstitial clusters (with size 2–4), C15 clusters, 1∕2 ⟨111 ⟩loops and ⟨100 ⟩loops, respec- tively. The side length of the box is 20 nm