fig4

Figure 4. Microstructure of the C3 alloy: (A) macroscopic morphology; (B) enlarged view within the blue box in (A); (C) and (D) grain size distributions within the FG and the CG regions corresponding to (A). The yellow arrows in (B) indicate the band-like distribution of precipitates within or traversing grains. FG: Fine-grained; CG: coarse-grained.