Site occupations and ordering behaviour of O phase in Ti2AlNb-based intermetallics
来源期刊：中国有色金属学报(英文版)2002年第4期
论文作者：吴波 沈剑韵 张翥 孙军 商顺利 彭德林 柳松清
文章页码：635 - 638
Key words：Ti2AlNb-based intermetallics；orthorhombic phase；site occupation；ordering behaviour
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” .
