Figure 2: PSDs for γ′ precipitates.
From: Mapping the evolution of hierarchical microstructures in a Ni-based superalloy

The scaled PSDs for γ′ are compared with the prediction of the LSW coarsening theory by Lifshitz and Slyozov18 and Wagner19 (dashed line). The probability density is g(u) and u=R/<R> is the scaled particle radius, where R is the equivalent radius of a γ′ precipitate and <R> is the average equivalent radius of 100 γ′ precipitates. This is shown after ageing at (a) 1,548 K/4 h+1,213 K/0.75 h and subsequently at 1,023 K for (b) 6 h, (c) 24 h, (d) 96 h, (e) 192 h and (f) 384 h.