Journal
SCRIPTA MATERIALIA
Volume 112, Issue -, Pages 15-18Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.08.033
Keywords
Martensitic phase transformation; Titanium alloys; Interstitials; Nanodomains
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Funding
- Japan Society for the Promotion of Science [26220907, 26870194, 15H04143]
- Advanced Low Carbon Technology Research and Development Program of the Japan Science and Technology Agency [JY240121]
- Grants-in-Aid for Scientific Research [15H04143, 26220907, 26870194] Funding Source: KAKEN
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The role of oxygen atoms in the alpha '' martensite phase was investigated in the Ti-20 at.% Nb alloy by X-ray diffractometry and differential scanning calorimetry. The axial ratio b/a of alpha '' martensite and reverse martensitic transformation temperature increased with increasing oxygen content. These results imply that the alpha '' martensite was stabilized by oxygen atoms, owing to the relaxation of the strain field introduced by the oxygen atoms. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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