Exceptional strength-ductility synergy at room and liquid nitrogen temperatures of Al7.5Co20.5Fe24Ni24Cr24 high-entropy alloy with hierarchical precipitate heterogeneous structure

• Published in: International journal of plasticity Vol. 175; p. 103939
• Main Authors: Chu, Chenliang, Chen, Weiping, Huang, Liran, Wang, Hao, Chen, Ling, Fu, Zhiqiang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2024
• Subjects: Deformation mechanism; Heterogeneous structure; High-entropy alloy; Strength-ductility synergy; Thermo-mechanical processing; Thermo-mechanical processing; Heterogeneous structure; High-entropy alloy; Strength-ductility synergy; Deformation mechanism

•Hierarchically precipitated heterostructure was obtained by thermo-mechanical treatment.•Exceptional strength-ductility synergies were achieved at both 293 K and 77 K.•Hetero-deformation-induced hardening stress fosters deformation twins formation as plastic strain increase.•The interplay of disloc...