Role of oxygen atoms in α martensite of Ti-20 at.% Nb alloy

SCRIPTA MATERIALIA

卷:112

Article

Tahara, Masaki¹  Inamura, Tomonari¹  Kim, Hee Young²  Miyazaki, Shuichi^2,3  Hosoda, Hideki¹ 

[1] Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] Univ Tsukuba, Div Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[3] Fdn Adv Int Sci, Tsukuba, Ibaraki 3050821, Japan

关键词: Martensitic phase transformation;    Titanium alloys;    Interstitials;    Nanodomains;   

DOI  :  10.1016/j.scriptamat.2015.08.033

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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