Abstract
Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). The origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.
Original language | English |
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Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Materials and Design |
Volume | 155 |
DOIs | |
Publication status | Published - 5 Oct 2018 |
Externally published | Yes |
Keywords
- High-entropy alloys
- Lattice distortion
- Pair distribution function
- Synchrotron X-ray diffraction