Sanyal, Suchismita ; Waghmare, Umesh V. ; Subramanian, P. R. ; Gigliotti, Michael F. X. (2008) Effect of dopants on grain boundary decohesion of Ni: a first-principles study Applied Physics Letters, 93 (22). 223113 _1-223113 _3. ISSN 0003-6951
Full text not available from this repository.
Official URL: http://apl.aip.org/resource/1/applab/v93/i22/p2231...
Related URL: http://dx.doi.org/10.1063/1.3042211
Abstract
First-principles density functional theory (DFT) calculations were used to determine decohesion properties of Σ5(012) grain boundary of Ni with dopants B, C, S, Cr, and Hf. The relative stability of sites was evaluated and cleavage energies were calculated. Electronic structure was used to understand these properties in terms of changes in bonding with addition of dopants. It was found that strengthening of the Ni grain boundary results from Hf, B, and Cr doping. In contrast, the grain boundary weakens with S and C doping. These results should be useful in the design of next-generation nanostructured Ni-based alloys with improved mechanical behavior.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Ab Initio Calculations; Boron; Carbon; Chromium; Density Functional Theory; Doping; Electronic Structure; Grain Boundaries; Hafnium; Nickel; Sulphur |
| ID Code: | 59381 |
| Deposited On: | 06 Sep 2011 05:32 |
| Last Modified: | 06 Sep 2011 05:32 |
Repository Staff Only: item control page
