材料期刊网

ELECTRONIC STRUCTURE OF γ'-PHASE IN SUPERALLOY CONTAINING Mg AND W

ZHU Kai University of Science and Technology of China , Hefei , China WANG Chongyu Central Iron and Steel Research Institute , Ministry of Metallurgical Industry , Beijing , China Central Iron and Steel Research Institute , No.13 , Taipingzhuang , Beijing , China

金属学报(英文版)

The calculation of electronic structure of γ'-Ni_3Al phase with or without Mg and W by the Recursion and LCAO methods clarified that Mg and W atoms lose their outer electrons par- tially after they entered γ'-Ni_3Al.It causes the reduction of the radii of the atoms.So it is preferable for Mg atom to enter γ'-phase by the substitution.The interaction between Mg and γ'-phase matrix may be strengthened and a more stable structure of γ'-phase may be formed while Mg and W entered γ'-Ni_3Al simultaneously.

关键词: superalloy , null , null , null