Abstract
The recrystallization behavior of a mechanically alloyed oxide dispersion strengthened Ni-base superalloy MA760 (Ni-19.51%Cr-6%Al-3.41%W-1.19%Fe-1.02%Y2O3(wt%)) has been investigated by using a combination of microscopy, calorimetry and hardness measurement techniques. It has been found that recrystallization occurs at very high temperatures and has a very fast kinetics. Recrystallization onset temperature increases with increasing heating rate, while recrystallized grain size decreases. The effects of pre-anneal have been found to be reducing the stored energy for recrystallization and the subsequent recrystallized grain size. To explain all these experimental observations, a model has been proposed considering grain boundary junction pinning during the initial stage of recrystallization process.
| Original language | English |
|---|---|
| Pages (from-to) | 87-94 |
| Number of pages | 8 |
| Journal | Rare Metals |
| Volume | 15 |
| Issue number | 2 |
| Publication status | Published - 01 Apr 1996 |
ASJC Scopus subject areas
- General Materials Science
- Metals and Alloys