| Autor: |
Donnadieu, Patricia, Harmelin, Mireille, Su, Huang-Lung, Seifert, Hans-Jürgen, Effenberg, Günter, Aldinger, Fritz |
| Zdroj: |
International Journal of Materials Research: Zeitschrift fuer Metallkunde; November 2021, Vol. 88 Issue: 1 p33-37, 5p |
| Abstrakt: |
A new quasicrystal with no forbidden symmetry axes has been identified in a rapidly solidified Mg– 61 at.% Al alloy. Its structure is characterized by a cubic point group and aperiodic electron diffraction patterns showing inflation symmetry. Therefore this new structural state of matter stands as a cubic quasicrystal. The ratios between inflated motifsare frequentlyp close to irrationalvalues related to 3(i.e. 1+3,3and (1+3)/2).$\sqrt{3}\text{ (i}\text{.e}\text{. }1+\sqrt{3},\sqrt{3}\text{ and }(1+\sqrt{3})/2).$This quasicrystal is metastable and transforms on annealing into the equilibrium fcc β phase (a = 2.83 nm). |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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