Creep Controlled Crack Growth

Subcritical Crack Growth Creep-Controlled Crack Growth... 

Creep-Controlled Crack Growth Experimental Support... 

Companion data on steady-state creep, over the same temperature range, are shown in Figs. 6.5-6.S and are in good agreement with those of crack growth. The direct linkage between creep and creep-controlled crack growth is summarized in the next sections. 

The occurrence of creep-controlled crack growth, in an inert environment, has been demonstrated. It can occur even at modest temperatures, and has been linked to localized creep deformation and rupture of ligaments isolated by the growth of inclusion-nucleated voids ahead of the crack tip. Landes and Wei [2] and Yin et al. [3] have made a formal connection between the two processes, and provided a modeling framework and experimental data to link the kinetics of creep to creep-controlled crack growth. Further work is needed to develop, validate, and extend this understanding. In particular, its extension to high-temperature applications needs to be explored. 

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