HRTEM image contrast and atomistic microstructures of long-period ordered Al-rich TiAl alloys
書誌事項
- 公開日
- 2004-03-01
- DOI
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- 10.1093/jmicro/53.1.1
- 公開者
- Oxford University Press (OUP)
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説明
Long-period superstructures formed in off-stoichiometric L 1(0)-TiAl alloys were investigated by high-resolution transmission electron microscopy (HRTEM). The HRTEM analysis combined with multislice simulation and image processing was carried out to clarify atomistic microstructures of Al5Ti3 and h-Al2Ti ordered states and a short-range ordered (SRO) state in Ti-62.5 at.% Al alloys. Aluminium atoms in the (002) Ti layers form square-, lean rhombus- and fat rhombus-type ordered clusters in the SRO state. The ordered clusters are in contact with each other and form microdomains of various long-period superstructures. The ordered clusters are tiled periodically in a long range to form Al5Ti3 or h-Al2Ti domains and characteristic antiphase boundary structures.
収録刊行物
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- Journal of Electron Microscopy
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Journal of Electron Microscopy 53 (1), 1-9, 2004-03-01
Oxford University Press (OUP)
