On the role of Sm in solidification of Al-Sm metallic glasses
arXiv:1608.01226 · doi:10.1016/j.scriptamat.2016.06.045
Abstract
During the solidification of Al-Sm metallic glasses the evolution of the supercooled liquid atomic structure has been identified with an increasing population of icosahedral-like clusters with increasing Sm concentration. These clusters exhibit slower kinetics compared to the remaining clusters in the liquid leading to enhanced amorphous phase stability and glass forming ability (GFA). Maximum icosahedral-ordering and atomic packing density have been found for the Al90Sm10 and Al85Sm15 alloys, respectively, whereas minimum cohesive energy has been found for the Al93Sm7 which is consistent with the range of compositions (from Al92Sm8 to Al84Sm16) found experimentally with high GFA.
Cited by in corpus (7)
- Amorphous shear bands in crystalline materials as drivers of plasticity
- Increased stability of CuZrAl metallic glasses prepared by physical vapor deposition
- Nucleation Kinetics in Al-Sm Metallic Glasses
- Effects of minor alloying on the mechanical properties of Al based metallic glasses
- Molecular simulation-derived features for machine learning predictions of metal glass forming ability
- Microalloying effect in ternary Al-Sm-X (X=Ag, Au, Cu) metallic glasses studied by ab initio molecular dynamics
- Machine learning metallic glass critical cooling rates through elemental and molecular simulation based featurization