A gradient dislocation-cell structure (GDS) was controllably introduced into a Al0.1CoCrFeNi high-entropy alloy (HEA) via cyclic-torsion, which activated a novel stacking-fault-induced plasticity (SFIP) mechanism and significantly improved the strength and ductility.
Significance and Impact
The GDS can be used for a wide variety of alloys to achieve superior properties for advanced engineering applications.
Q. Pan, L. Zhang, R. Feng, Q. Lu, K. An, A. C. Chuang, J. D. Poplawsky, P. K. Liaw, and L. Lu, "Gradient-Cell-Structured High-Entropy Alloy with Exceptional Strength and Ductility," Science (2021). DOI: 10.1126/science.abj8114