Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1626011 | Journal of Alloys and Compounds | 2007 | 5 Pages |
Abstract
Combining molecular dynamic (MD) simulation with modified analytic embedded-atom method (MAEAM) potential, the formation, migration and activation energies of Ni self-diffusion in intermetallic compound NiAl have been calculated for five diffusion mechanisms, NNN jump, [1 1 0] 6JC, straight [1 0 0] 6JC, bent [1 0 0] 6JC and triple-defect diffusion. The results show that the Ni self-diffusion is dominated by the triple-defect diffusion mechanism since it requires essentially the lowest migration or activation energy (Q = 2.769 eV) in the five diffusion mechanisms. This is consistent with the conclusion of Frank et al.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Guo-Xiang Chen, Jian-Min Zhang, Ke-Wei Xu,