Thermodynamic limits of crystallization and the prediction of glass formation tendency
| Title | Thermodynamic limits of crystallization and the prediction of glass formation tendency |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Yao YX, Napolitano R, Wang CZ, Ho KM |
| Journal Title | Physical Review B |
| Volume | 81 |
| Pages | 212202 |
| Date Published | 06/24 |
| ISBN Number | 1098-0121 |
| Accession Number | ISI:000279146200001 |
| Keywords | amorphous phase, binary, forming ability, free-volume model, metallic-glass, NI-FE, silicon alloys, temperature, ternary-systems, transition |
| Abstract | We have calculated the T-0 curves for several Al-rare-earth binary alloys to assess the importance of the transport-based resistance to crystallization in the overall glass formation process and the general effectiveness of thermodynamic prediction of glass-forming ability. Our results show that the experimentally observed glass-forming compositions for Al-(Ce, Gd, Ho, Nd, Y, Dy) alloys strongly correlate with the composition range bounded by the T-0 curves associated with the relevant crystalline phases. This indicates that sluggish material transport, together with the tendency for clustering and other types of ordering at medium-range scale, is a key factor governing glass formation in these systems. |
| URL | <Go to ISI>://000279146200001 |
| DOI | 10.1103/Physrevb.81.212202 |
