Figure 9

Microstructure of the creep ruptured specimen at 550°C for 140 MPa (tr = 594 h): (a) aberrant ferritic matrix observed by BSD, (b) higher magnification image of (a), (c,d) typical structure of subgrain, dislocation, M₂₃C₆, MX and Laves observed by TEM; corresponding EDS and SAED are indicated in the right insets.