Journal
SCRIPTA MATERIALIA
Volume 130, Issue -, Pages 27-31Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.10.036
Keywords
Phase transformations; Titanium alloys; Transmission electron microscopy; Tensile deformation
Categories
Funding
- Industrial Technology Research Grant Program from the New Energy and Industrial Technology Development Organization (NEDO) [09A19020a]
- JSPS KAKENHI [JP24246111, JP25702027, JP16K20918]
- Grants-in-Aid for Scientific Research [16K20918, 16K06771, 17K06071] Funding Source: KAKEN
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Deformation-induced co-phase transformation during tensile deformation was investigated in the developed spinal-support alloy, Ti-9Cr-0.2O. Both preferential single-variant omega transformation along its [0001] direction and growth and/or assembling of uniformly distributed omega particles undergo in the alloy during tensile deformation. It is confirmed that this deformation-induced omega-phase transformation can be triggered by elastic strain or stress without plastic deformation. Furthermore, a re-orientation process works for this transformation; that is, the omega(1) variant may re-orientate into the omega(2) variant via {001} (110) twinning-type mechanism probably related to the external loading condition and the orientations of omega and beta phases. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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