Chang, HJ Fleury, E Lee, YH Kim, WT Kim, DH 2024-01-21T07:09:46Z 2024-01-21T07:09:46Z 2021-09-01 2004-05 0950-0839 https://pubs.kist.re.kr/handle/201004/137660 The precipitation behaviour of a hexagonal two-dimensional aperiodic phase in Al-rich Al-Mn-Be alloy has been investigated. Upon heat treatment at temperatures above 450degreesC, the icosahedral phase formed in a conventionally cast Al-2.5 at.% Mn-3 at.% Be alloy transforms into the stable hexagonal H1 phase. The solute partitioning during transformation leads to the precipitation of a hexagonal two-dimensional aperiodic approximant phase (H' phase). The precipitates have an orientation relationship with the alpha-Al matrix. The similarity of the diffraction features indicates that the hexagonal two-dimensional aperiodic structure of the H' phase is an intermediate structure between the true sixfold quasiperiodic structure and the hexagonal structure of the crystalline counterpart H1 phase. English TAYLOR & FRANCIS LTD QUASI-CRYSTALLINE SYSTEM QUASICRYSTALS DIFFRACTION Precipitation of a two-dimensional aperiodic approximant phase in Al-rich Al-Mn-Be alloy Article 10.1080/09500830410001675678 1 PHILOSOPHICAL MAGAZINE LETTERS, v.84, no.5, pp.311 - 319 PHILOSOPHICAL MAGAZINE LETTERS 84 5 311 319 scie scopus 000222178500004 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Materials Science Metallurgy & Metallurgical Engineering Physics Article QUASI-CRYSTALLINE SYSTEM QUASICRYSTALS DIFFRACTION 2D aperiodic precipitation quasicrystal Al-based