Fig. 6. Microstructural evolution of 316L+1.5Y by FIBCCI after annealing at (a)1000, (b)1100, and(c)1200 °C for 3h.
The average grain size increases dramatically above 1100 °C.
The white arrows indicate abnormally grown large grains in (b) and small grains among large grains in (c).
The dark circles show the holes in the observed sample.