Fracture at Elevated Temperature in Dispersion Strengthened Alloys.
Final technical rept. 1 Oct 75-30 Sep 79,
CORNELL UNIV ITHACA N Y DEPT OF MATERIALS SCIENCE AND ENGINEERING
Pagination or Media Count:
This report describes important new findings in the understanding of intergranular cavitation and fracture in alloys which derive their creep strength from the presence of hard second phase particles, such as the nickel base superalloys. The work is primarily theoretical but is supported in most instances, by simple experiments on model alloys. Criteria for the nucleation of cavities at high temperature are developed and it is shown that cavities are most likely to nucleate at particles in the grain boundaries.
- Properties of Metals and Alloys