Coherent orientation relationship between an icosahedral phase and a cubicαphase in melt-spun Al-Si-Mn
- 15 April 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 33 (8) , 5328-5332
- https://doi.org/10.1103/physrevb.33.5328
Abstract
We report what we believe to be the first observation of definite coherent directional relationship between a cubic α phase and an icosahedral phase in rapidly quenched Al-Si-Mn. Electron-microscopic studies reveal that the set of three cubic orthogonal [001]-type directions are parallel, respectively, to three icosahedral twofold axes, and all cubic [111] directions are parallel to threefold icosahedral axes, while the fivefold icosahedral directions are very close to [530]-type cubic directions. Structural models of the quasicrystal as a disordered α phase are consistent with the present results.Keywords
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