First-Principles Study of Phase Stability and Mechanical Property of Co-3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys
Yao, Q; Su, XM; Yan, Y; Zhao, LW; Sun, J
| HERO ID | 4797580 |
|---|---|
| In Press | No |
| Year | 2009 |
| Title | First-Principles Study of Phase Stability and Mechanical Property of Co-3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys |
| Authors | Yao, Q; Su, XM; Yan, Y; Zhao, LW; Sun, J |
| Volume | 38 |
| Page Numbers | 1-4 |
| Abstract | The energetics, electronic structure and mechanical property Of Co-3(Al,W) precipitates with different ratio of Al to W in Co base alloys were investigated by the method of supercell and augmented plane waves plus local orbitals within generalized gradient approximation. The calculated results show that the L1(2) Co-3(Al,W) precipitate is the most stable when the ratio of Al to W is equal to 1. When the content of W is higher than 18.5 at%, the L1(2) and hexagonal structures co-exist in Co-3(Al,W) precipitates at 1173 K. It is also shown that the L1(2) ordered Co-3(Al,W) precipitates have an obvious strengthening effect in the disordered fcc cobalt matrix. |
| Wosid | WOS:000273469300001 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:RARE METAL MATERIALS AND ENGINEERING 1002-185X |
| Is Public | Yes |
| Keyword | phase stability; mechanical property; first-principles; Co base alloy |