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arxiv 1907.01583 v2 pith:HUIKOZWZ submitted 2019-07-02 cond-mat.mtrl-sci

Could face-centered cubic titanium in cold-rolled commercially-pure titanium only be a Ti-hydride?

Yanhong Chang , Siyuan Zhang , Christian H. Liebscher , David Dye , Dirk Ponge , Christina Scheu , Gerhard Dehm , Dierk Raabe
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Baptiste Gault Wenjun Lu
This is my paper
classification cond-mat.mtrl-sci
keywords electronphasetitaniumcubicface-centeredhydridemicroscopytransmission
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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.

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