摘要
The site occupations of the alloying elements of O phase in Ti 2AlNb based intermetallics are clarified. The ordering behaviours of the O phase in Ti y Al z Nb( 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 "
The site occupations of the alloying elements of O phase in Ti 2AlNb based intermetallics are clarified. The ordering behaviours of the O phase in Ti y Al z Nb( 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
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2002年第4期635-638,共4页
Transactions of Nonferrous Metals Society of China
基金
Project ( 5 0 0 710 11)supportedbytheNationalNaturalScienceFoundationofChina
project( 99JS6 1.6 .1QT10 01)supportedbytheNationalDefenseFoundationofChina
关键词
TiAlNb基金属间化合物
正交晶相
有序化
Ti 2AlNb based intermetallics
orthorhombic phase
site occupation
ordering behaviour
