Simultaneous gettering of oxygen and chlorine and homogenization of the β phase by rare earth hydride additions to a powder metallurgy Ti–2.25Mo–1.5Fe alloy

Yan, M., Liu, Y., Liu, Y. B., Kong, C., Schaffer, G. B. and Qian, M. (2012) Simultaneous gettering of oxygen and chlorine and homogenization of the β phase by rare earth hydride additions to a powder metallurgy Ti–2.25Mo–1.5Fe alloy. Scripta Materialia, 67 5: 491-494. doi:10.1016/j.scriptamat.2012.06.009


Author Yan, M.
Liu, Y.
Liu, Y. B.
Kong, C.
Schaffer, G. B.
Qian, M.
Title Simultaneous gettering of oxygen and chlorine and homogenization of the β phase by rare earth hydride additions to a powder metallurgy Ti–2.25Mo–1.5Fe alloy
Journal name Scripta Materialia   Check publisher's open access policy
ISSN 1359-6462
1872-8456
Publication date 2012-09
Sub-type Article (original research)
DOI 10.1016/j.scriptamat.2012.06.009
Volume 67
Issue 5
Start page 491
End page 494
Total pages 4
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Abstract A detailed transmission electron microscopy analysis has revealed that small additions of yttrium hydride to a powder metallurgy Ti–2.25Mo–1.5Fe alloy resulted in the formation of both chlorine-free yttrium oxides and essentially oxygen-free yttrium chlorides. The oxides and chlorides showed distinctly different morphologies and spatial distribution. Yttrium acted as a potent getter for both oxygen and chlorine. Additionally, the β-Ti phase was free of nanoscaled α-Ti in the presence of yttrium. These microstructural changes contribute to the substantially increased ductility (∼90%).
Keyword Titanium alloy
Powder metallurgy
Rare earth
Chlorine
Ductility
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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