Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10620858 | Acta Materialia | 2007 | 7 Pages |
Abstract
The cluster/site approximation (CSA) has been used to model the face-centered cubic (fcc) phases (disordered γ with the A1 structure and ordered γⲠwith the L12 structure) in the Ni-Al-Cr-Re quaternary system. The CSA takes into account short-range order (SRO), which is vital for describing order/disorder transitions. The approximation possesses computational advantages over the cluster variation method while offering comparable accuracy in the calculation of multi-component phase diagrams. The CSA-calculated phase diagrams are in good accord with the experimental data. In addition, the fcc metastable phase diagrams calculated by using the CSA show the expected ordering/disordering behavior and phase relationships.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Zhu, W. Cao, Y. Yang, F. Zhang, S. Chen, W.A. Oates, Y.A. Chang,