Could face-centered cubic titanium in cold-rolled commercially-pure titanium only be a Ti-hydride?. (15th March 2020)

• Record Type: Journal Article
• Authors: Chang, Yanhong; Zhang, Siyuan; Liebscher, Christian H.; Dye, David; Ponge, Dirk; Scheu, Christina; Dehm, Gerhard; Raabe, Dierk; Gault, Baptiste; Lu, Wenjun
• Is Part Of: Scripta materialia. Number 178(2020)
• Page Start: 39
• Page End: 43
• Publication Date: 2020-03-15
• Subjects: Cold-rolled pure Ti -- Electropolishing -- FCC phase -- Scanning transmission electron microscopy (STEM) -- Electron energy loss spectroscopy (EELS), Atom probe tomography (APT); Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.11.010
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A face-centered cubic (FCC) phase in electro-polished specimens for transmission electron microscopy of commercially pure titanium has sometimes been reported. Here, a combination of atom-probe tomography, scanning transmission electron microscopy and low-loss electron energy loss spectroscopy is employed to study both the crystal structural and chemical composition of this FCC phase. Our results prove that the FCC phase is actually a TiHx ( x ≥ 1) hydride, and not a new allotrope of Ti, in agreement with previous reports. The formation of the hydride is discussed. Graphical abstract: Image, graphical abstract