| Autor: |
Hata, Satoshi, Higuchi, Kiyoshi, Mitate, Toshitsugu, Itakura, Masaru, Tomokiyo, Yoshitsugu, Kuwano, Noriyuki, Nakano, Takayoshi, Nagasawa, Yosuke, Umakoshi, Yukichi |
| Zdroj: |
Journal of Electron Microscopy; March 2004, Vol. 53 Issue: 1 p1-9, 9p |
| Abstrakt: |
Long-period superstructures formed in off-stoichiometric L10-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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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