Transformation of Al–Ni–(Si) decagonal quasicrystals to 1–D quasicrystal and crystalline approximants

Journal of Materials Research - Tập 8 Số 10 - Trang 2499-2503 - 1993
X.Z. Li1, K. H. Kuo1
1Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, Beijing, People's Republic of China

Tóm tắt

Rapidly quenched Al86-xNi14Six (x = 0, 2, 6, and 10) alloys have been studied by means of transmission electron microscopy. Two-dimensional (2-D) decagonal quasicrystal with a periodicity of 1.6 nm along its tenfold axis was found in the rapidly quenched Al86Ni14 binary alloy. With the addition of some silicon, such as AlgoNi14Si6, the 2-D decagonal quasicrystal first transforms to a one-dimensional (1-D) quasicrystal that inherits the periodicity along the tenfold axis and has, in addition, translation periodicity in one of the twofold axes of the decagonal phase, and finally transforms to a new orthorhombic crystalline phase (a = 0.78, b = 1.62, and c = 1.48 nm). In the Al76Ni14Si10 ternary alloy, a 2-D decagonal quasicrystal with a periodicity of 0.4 nm and a coexisting crystalline phase with the “Al3Ni2” structure were found, and their orientational relationship has been determined.

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Tài liệu tham khảo

10.1107/S0567739474000933

10.1103/PhysRevB.41.3482

10.1098/rspa.1937.0056

Fitzgerald, 1988, Philos. Mag. B, 63, 687

10.1080/09500838708210436

10.1080/09500838808214749

10.1103/PhysRevB.33.7917

10.1088/0305-4608/17/9/001

Chattopadhyay, 1985, Current Science, 54, 895

10.1007/BF00719959

10.1080/13642819208223050

10.1016/0022-5088(90)90084-W

10.1080/13642819208207647

10.1103/PhysRevB.34.6924

10.1103/PhysRevB.42.8907

10.1103/PhysRevLett.61.1116

10.1103/PhysRevLett.56.2060

Tsai, 1989, Trans. Jpn. Inst. Met., 30, 308

10.1103/PhysRevLett.55.1461

10.1107/S0365110X61000346

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Thông tin xuất bản

Journal of Materials Research

Tập 8 Số 10

2499-2503

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