Research Article
Influence of Milling Time on Structural and Microstructural Parameters of Ni50Ti50 Prepared by Mechanical Alloying Using Rietveld Analysis
Table 1
Structural and microstructural properties of unmilled Ni and Ti using the Rietveld refinements.
| | Microstructural properties | Element | | Nickel (Ni) | Titanium (Ti) |
| | Crystal structure | FCC | HCP |
| | Space group | Fm-3m | P63/mmc |
| | Cell parameters (nm) | = 0.3524 | a = 0.2952 | | b = 0.4686 |
| | Atom positions | : 3.65141 10−4 | : 0.3333 | | : −8.8563 10−5 | : 0.6667 | | : −5.9118 10−5 | : 0.2500 |
| | Occupancy | 1.0001 | 1.0000 |
| | Crystallite size (nm) | 318.4175 | 241.2283 |
| | Microstrain | 3.1758 10−4 | 4.5954 10−4 |
| | Stacking faults probability (SFP) | 1.5832 10−4 | 0.1744 |
| | Dislocations density (×1016 ) | 0.0014 | 0.0027 |
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