High strength-ductility Co23Cr23Ni23Mn31 medium-entropy alloy achieved via defect engineering

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:796

Article

Wang, Jianying¹  Yang, Hailin¹  Huang, Hua¹  Zou, Jianpeng¹  Ji, Shouxun²  Liu, Zhilin³ 

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Brunel Univ London, BCAST, Uxbridge UB8 3PH, Middx, England

[3] Cent South Univ, Coll Mech & Elect Engn, Light Alloy Res Inst, Changsha 410083, Peoples R China

关键词: Medium-entropy alloys;    Defect engineering;    Tensile properties;    Deformation microstructure;    Strengthening mechanisms;   

DOI  :  10.1016/j.msea.2020.139974

来源: Elsevier

【 摘 要 】

We employed 'defect engineering' to achieve high strength-ductility in a new Co23Cr23Ni23Mn31 medium-entropy alloy. Using rolling and annealing, various defects were introduced, including nanoparticles, dislocations, stacking faults, nanotwins, Lomer-Cottrell locks, h.c.p lamellaes and amorphous bands. Engineering these defects facilitated to tailor mechanical response at different temperatures and applied strains.

【 授权许可】

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