作者：
Guan-Cheng Gu;Zhao-Jing Han;Ze-Yu Chen;Zhao-Xuan Li;Sheng-Bao Xia;...
通讯作者：
Hua Jin;Wei-Wei Xu
作者机构：
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
Institute of Materials Genome and Big Data, Harbin Institute of Technology, Shenzhen, China
通讯机构：
Shenzhen Research Institute of Xiamen University, School of Aerospace Engineering, Xiamen University, Xiamen, China
语种：
英文
关键词：
Co–Al–Nb-base superalloys,dual-phase,Phase stability,Mechanical properties,First-principle methods
期刊：
金属学报(英文版)
ISSN：
1006-7191
年：
2024
基金类别：
National Natural Science Foundation of China [52371014, U22B20132]; Shenzhen Science and Technology Program [JCYJ20230807091401004]; Fundamental Research Funds for the Central Universities [20720230036]; Guided Subject of Dean's Fund [YZJJ-YDL-0004
摘要：
The new developed γ/γʹ Co–Al–Nb-base alloys show great potentials as high-temperature materials. However, finding appropriate compositions to improve performance of alloys still poses a great challenge to the development of Co–Al–Nb-base alloys. Motivated by the lack of alloying effects on fundamental properties of critical γʹ phase, we systematically performed a theoretical investigation on the effect of alloying elements TM (TM: Ti, V, Cr, Zr, Mo, Ta, W, Re, and Ru) on phase stabilities and mechanical properties of L12-type γʹ (Co, Ni)3(Al, Nb). By analyzing the stability of γʹ phase with respect to its competitive B2 and D019 phases, the results shown that...
