The temperature dependence of dislocation density and its relationship with the anomalous growth of the flow stress were presented. A pronounced density increase of about an order of magnitude in a temperature range below the peak of anomalous flow stress growth was clearly established experimentally (table 33). The correlation with different components of the applied stress was examined and it was shown that the dislocation density was related to the stress required for dislocation multiplication.

Dislocation Density in Ni3(Al,Hf). Kruml, T., Paidara, V., Martina, J.L.: Intermetallics, 2000, 8[7], 729–36

Table 33

Dislocation densities in Ni74.8Al21.9Hf3.3