| Site occupations and ordering behaviour of O phase in Ti2AlNb—based intermetallics |
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| 引用本文： | 吴波,沈剑韵,张翥,孙军,商顺利,彭德林,柳松清. Site occupations and ordering behaviour of O phase in Ti2AlNb—based intermetallics[J]. 中国有色金属学会会刊, 2002, 12(4): 635-638 |
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| 作者姓名： | 吴波 沈剑韵 张翥 孙军 商顺利 彭德林 柳松清 |
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| 作者单位： | 1. General Research Institute for Non ferrous Metals，Beijing 100088，China; 2. State Key Laboratory for Precision Hot Processing of Metals，Harbin Institute of T |
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| 基金项目： | 国家自然科学基金，the National Defense Foundation of China |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｏｒｔｈｏｒｈｏｍｂｉｃａｌｌｏｙｓａｒｅｏｆｇｒｅａｔｔｅｃｈ ｎｏｌｏｇ ｉｃａｌｉｎｔｅｒｅｓｔｉｎｈｉｇｈｔｅｍｐｅｒａｔｕｒｅａｐｐｌｉｃａｔｉｏｎｓｓｉｎｃｅｔｈｅｙｈａｖｅａｇｏｏｄｂａｌａｎｃｅａｍｏｎｇｓｔ
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| 关 键 词： | TiAlNb基金属间化合物 正交晶相 有序化 |
Site occupations and ordering behaviour of O phase in Ti2AlNb-based intermetallics |
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| WU Bo,SHEN Jian yun,ZHANG Zhu,SUN Jun,SHANG Shun li,PENG De lin,LIU Song qing. Site occupations and ordering behaviour of O phase in Ti2AlNb-based intermetallics[J]. Transactions of Nonferrous Metals Society of China, 2002, 12(4): 635-638 |
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| Authors: | WU Bo SHEN Jian yun ZHANG Zhu SUN Jun SHANG Shun li PENG De lin LIU Song qing |
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| Abstract: | The site occupations of the alloying elements of O phase in Ti2AlNb-based intermetallics are clarified. The ordering behaviours of the O phase in Ti -yAl-zNb(y≥25%, mole fraction) orthorhombic alloys are also investigated with a Bragg-Williams model. In the temperature range where the O phases exist, the order parameters change with the alloy composition and temperature continuously, and the first-order transition character is very "weak" . |
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| Keywords: | Ti 2AlNb based intermetallics orthorhombic phase site occupation ordering behaviour |
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