Enhanced strength and ductility in a high-entropy alloy via ordered oxygen complexes

• Published in: Nature (London) Vol. 563; no. 7732; pp. 546 - 550
• Main Authors: Lei, Zhifeng, Liu, Xiongjun, Wu, Yuan, Wang, Hui, Jiang, Suihe, Wang, Shudao, Hui, Xidong, Wu, Yidong, Gault, Baptiste, Kontis, Paraskevas, Raabe, Dierk, Gu, Lin, Zhang, Qinghua, Chen, Houwen, Wang, Hongtao, Liu, Jiabin, An, Ke, Zeng, Qiaoshi, Nieh, Tai-Gang, Lu, Zhaoping
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.11.2018; Nature Publishing Group
• Subjects: 119/118; 639/301/1023/1026; 639/301/1023/303; Alloying elements; Alloys; Carbon; Chemical properties; Cross slip; Cubic lattice; Deformation mechanisms; Dislocation; Dislocations; Doping; Ductility; Entropy; Hafnium base alloys; Heavy metals; High entropy alloys; Humanities and Social Sciences; Interstitial impurities; Interstitials; Letter; Mechanical properties; Metals (Materials); multidisciplinary; Nitrogen; Nuclear facilities; Organic chemistry; Oxides; Oxygen; Science; Science (multidisciplinary); Single crystals; Solid solutions; Specialty metals industry; Stacking fault energy; Strain hardening; Strength; Titanium; Zirconium; New York; United States > US; Chemical Short-range Order; Wavy Slip; Interstitial Strengthening; Double Cross Slip; High-entropy Alloys (HEA)

Oxygen, one of the most abundant elements on Earth, often forms an undesired interstitial impurity or ceramic phase (such as an oxide particle) in metallic materials. Even when it adds strength, oxygen doping renders metals brittle 1 – 3 . Here we show that oxygen can take the form of ordered oxygen...