Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7988817 | Intermetallics | 2013 | 4 Pages |
Abstract
An efficient atomic packing-chemistry coupled model has been described for ternary Al-based metallic glasses based upon efficient atomic packing and electrochemical potential equalization principle. For Al-TM (transition metal)-RE (rare earth) system, RE-centered clusters are arranged in a mode of spherical periodic order, and TM atoms locate at the interstitial sites between RE-centered clusters to form an efficient atomic packing. The equalization of electrochemical potential between the RE-centered clusters and the TM-centered clusters accounts for the stability of amorphous structure. Further, complementary inverse structure is utilized to select efficient clusters and solute elements for the best glass-forming ability. The validity of this model was testified in the Al-Ni-RE (Y, Ce, La, Gd) systems. A new Al-Ni-Ho glass with a wedge thickness of about 718 μm has been discovered at the predicted composition.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
N.C. Wu, D. Kan, L. Zuo, J.Q. Wang,