Twin-like fault in Mg–9.8 wt%Sn alloy. (October 2018)

• Record Type: Journal Article
• Authors: Liu, Chaoqiang; Chen, Houwen; Wilson, Nick; Nie, Jian-Feng
• Is Part Of: Scripta materialia. Number 155(2018)
• Page Start: 89
• Page End: 93
• Publication Date: 2018-10
• Subjects: Magnesium alloys -- Stacking fault -- Segregation -- HAADF-STEM -- DFT; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.06.018
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T2 fault, has received little attention. In this study, we report for the first time the occurrence of T2 fault in Mg–9.8 wt%Sn alloy. The T2 fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T2 fault energy. Graphical abstract: Unlabelled Image