Novel Co-rich high entropy alloys with superior tensile properties

• Published in: Materials research letters Vol. 7; no. 2; pp. 82 - 88
• Main Authors: Wei, Daixiu, Li, Xiaoqing, Heng, Weicheng, Koizumi, Yuichiro, He, Feng, Choi, Won-Mi, Lee, Byeong-Joo, Kim, Hyoung Seop, Kato, Hidemi, Chiba, Akihiko
• Format: Journal Article
• Language: English
• Published: Taylor & Francis Group 01.02.2019
• Subjects: deformation twinning; High entropy alloy; martensitic transformation; metastable; stacking fault energy

We developed a series of Co-rich CoxCr25(FeNi)(75-x) (x = 35, 45, 55, 65) high entropy alloys with improved strength and/or ductility, derived from lowering the stacking fault energy (SFE) and reducing the fcc phase stability of the equiatomic CoCrFeNi alloy. Thermodynamics and ab initio calculation...