fig13
Figure 13. (A-D) Microstructure of as-cast samples without solid solution and ageing treatment; (E-H) and (I-L) Microstructure of extruded and rolled alloys after solid solution treatment, respectively. (A, E, and I) A1, (B, F, and J) A2, (C, G, and K) A3, (D, H, and L) A4.
