Abstract
The effects of the middle heat treatment + aging (1273 K + 1083 K) on the precipitation mechanism and volume fraction of Ni-Cr-Al ternary alloy have been studied based on microscopic phase-field model. The results show that the precipitation mechanism is non-classical nucleation and growth for the alloy at middle heat treatment, and the congruent ordering and spinodal decomposition mechanism occur at single-stage aging. The larger precipitation strengthening phases γ' were obtained, the volume fraction of ordering phases and the averaged ordering parameter were higher, and the incubation period was prolonged after the middle heat treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 1461-1465 |
| Number of pages | 5 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 35 |
| Issue number | 9 |
| State | Published - Sep 2006 |
Keywords
- Microscope phase-field model
- Middle heat treatment
- Ni-Cr-Al
- Simulation
- Volume fraction