Strengthening in multi-principal element alloys with local-chemical-order roughened dislocation pathways

• Published in: Nature communications Vol. 10; no. 1; pp. 3563 - 11
• Main Authors: Li, Qing-Jie, Sheng, Howard, Ma, Evan
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 08.08.2019; Nature Publishing Group; Nature Portfolio
• Subjects: 119/118; 639/301/1023; 639/301/1034; 639/301/119; Alloying elements; Alloys; Dislocation; Dislocations; Entropy; Geological faults; High entropy alloys; High temperature; Humanities and Social Sciences; multidisciplinary; Organic chemistry; Plastic deformation; Ruggedness; Science; Science (multidisciplinary); Solid solutions; Solution strengthening; Twinning

High-entropy and medium-entropy alloys are presumed to have a configurational entropy as high as that of an ideally mixed solid solution (SS) of multiple elements in near-equal proportions. However, enthalpic interactions inevitably render such chemically disordered SSs rare and metastable, except a...