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The effect or iron on the creep properties of NiAl

Fig. 2 The dislocation substructure of N150AI50 crept at 750°C, 75MPa. (a) 1 hour. Notice the jogged dislocations and prismatic vacancy loops with residual contrast (Burgers vector = [001]). g =110, B ~ [001]. (b) 96 hours (ε~7%). Well developed subgrain boundaries are formed.