Abstract
1. The creep failure of Cr-Mo-V steels occurrs when the metal obtains a critical amount of damage — mean pore size in the fracture of 3±1.4 μm and a distribution density of from 0.03 to 0.06 μm−2. 2. The creep fracture surface of Cr-Mo-V steels is primarily a combination of intergranular facets with a brittle (undeformed) and ductile (cuplike with ridge tears) relief. 3. As the creep longevity increases, the fraction of brittle intergranular facets on the fracture surface increases, the shape of the subgrains close to the fracture surface changes from extended to equiaxial and in the substructure there is a noticeable increase in the number of "in situ" recrystallization sites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
