An Investigation of the Structure and High Temperature Mechanical Properties of Oxide Dispersion Strengthened Alloys.
Interim scientific rept. 1 Oct 81-30 Sep 82,
STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING
Pagination or Media Count:
The structure and high temperature mechanical properties of oxide dispersion strengthened alloys are being studied. We have observed and studied superplastic properties in fine grained MA 6000 and MA 754. These properties have been described by model which couples dislocation and diffusional creep. The creep properties of coarse grained MA 754 are also being studied. We have observed that cavitation contributes to the creep rate at low stresses and high temperatures and that grain boundary degradation occurs by diffusional processes. Work on the structure and properties of A1-Fe-Ce alloys is just starting.
- Metallurgy and Metallography