Non-stoichiometric μ-phase MEA

Guangsheng, Cheng; Shi, Yunzhu; Wang, Yihan; Zhang, Fei; Li, Rui; Zhou, Yu H.; Wu, Zhenggang; Ma, Chao; Lei, Zhifeng; Lü, Zhaoping

Non-stoichiometric μ-phase MEA

3× yield strength

Substituting Cr with W introduces planar defects in TCP-phase particles, lowering nucleation barrier, refining grains, and enhancing precipitation strengthening, raising yield strength from 427 to 1356 MPa.

Guangsheng, Cheng · Shi, Yunzhu · Wang, Yihan · Zhang, Fei · Li, Rui · Zhou, Yu H. · Wu, Zhenggang · Ma, Chao · Lei, Zhifeng · Lü, Zhaoping

Acta Materialia 2024

Specifications

MPa W Cr: {'zh': '427', 'en': '7'} CoNi

Advantages

Effectively restrains the growth of FCC matrix grains