Achieving high strength and high ductility in Al0.3CoCrNi medium-entropy alloy through multi-phase hierarchical microstructure

• Published in: Materialia Vol. 8; p. 100442
• Main Authors: Sathiyamoorthi, Praveen, Park, Jeong Min, Moon, Jongun, Bae, Jae Wung, Asghari-Rad, Peyman, Zargaran, Alireza, Seop Kim, Hyoung
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2019
• Subjects: Back stress; Bimodal grain size; Deformation twinning; Heterogeneous microstructure; Precipitates; Deformation twinning; Bimodal grain size; Heterogeneous microstructure; Precipitates; Back stress

The enhancement of strength in materials by conventional strengthening mechanism is always accompanied by loss of ductility due to the reduced strain hardenability, leading to a strength–ductility trade-off. In this paper, we engineered Al0.3CoCrNi medium-entropy alloy to contain multi-phase hierarc...