Abstract
This paper reports three-dimensional atom probe tomography results from a γ/γ' based Co-Al-W alloy and two quaternary variants of this alloy highlighting the following salient features: (i) sub-nanometer-scale solute partitioning across the γ/γ' interface as well as solute pile-up at this interface; (ii) the site preference of quaternary elements in γ' precipitates, Co 3(Al, W); and (iii) formation of multiple generations of γ' precipitates in one of the alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 850-853 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 67 |
| Issue number | 10 |
| DOIs | |
| State | Published - Nov 2012 |
| Externally published | Yes |
Funding
D. D. and H. -Y. Y. acknowledge funding from Rolls-Royce plc and EPSRC (EP/H004882/1). R. B., S. N. and S. M. would like to acknowledge the US Air Force Research Laboratory (AFRL Contract FA8650-08-C-5226) for providing financial support for this study.
| Funders | Funder number |
|---|---|
| Air Force Research Laboratory | FA8650-08-C-5226 |
| Engineering and Physical Sciences Research Council | EP/H004882/1 |
| Rolls-Royce |
Keywords
- Atom probe tomography
- Cobalt-base superalloy
- Site occupancy
- Solute partitioning
- γ' Generations