A Phase-Field Model for Phase Transformations in Glass-Forming Alloys
| Title | A Phase-Field Model for Phase Transformations in Glass-Forming Alloys |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Wang T, Napolitano RE |
| Journal Title | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science |
| Volume | 43A |
| Pages | 2662-2668 |
| Date Published | 08 |
| Type of Article | Article; Proceedings Paper |
| ISBN Number | 1073-5623 |
| Accession Number | WOS:000305732900018 |
| Keywords | ability, amorphous-alloys, bulk metallic glasses, computer-simulation, cu-zr alloys, dynamics, grain-growth, liquid, solidification, transition |
| Abstract | A phase-field model is proposed for phase transformations in glass-forming alloys. The glass transition is introduced as a structural relaxation, and the competition between the glass and crystalline phases is investigated. The simulations are performed for Cu-Zr alloys, employing thermodynamic and kinetic parameters derived from reported thermodynamic modeling and molecular dynamics simulation results,[1-3] respectively. Four distinct phase fields are treated with a multi-phase-field approach, representing the liquid/glass, Cu10Zr7, CuZr, and CuZr2 phases. In addition, a continuum-field method is applied to the liquid to accommodate the liquid-glass transformation. The combined phase-field approach is used to investigate the glass formation tendency, and critical cooling rates are estimated and compared with the reported experimental values. |
| URL | <Go to ISI>://WOS:000305732900018 |
| DOI | 10.1007/s11661-012-1136-2 |
| Alternate Journal | Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. |
