Transformation pathway from alpha to omega and texture evolution in Zr via high-pressure torsion

Using high energy X-ray diffraction, we study the phase transition from α to ω in Zr via high-pressure torsion. We examine the evolution of the texture and establish the crystallographic orientation relationship between the α and ω phases. The orientation relationship supports the Silcock/Rabinkim d...

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Bibliographic Details
Published in:Applied physics letters 2019-02, Vol.114 (6)
Main Authors: Wang, H., Dmowski, W., Wang, Z., Qiang, J., Tsuchiya, K., Yokoyama, Y., Bei, H., Egami, T.
Format: Article
Language:English
Subjects:
Applied physics
Beta phase
Crystallography
Evolution
Martensitic transformations
MATERIALS SCIENCE
Orientation
Phase transitions
Texture
Torsion
X-ray diffraction
Zirconium
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Summary:Using high energy X-ray diffraction, we study the phase transition from α to ω in Zr via high-pressure torsion. We examine the evolution of the texture and establish the crystallographic orientation relationship between the α and ω phases. The orientation relationship supports the Silcock/Rabinkim direct transformation pathway and excludes the possibility of transition through the intermediate β phase, the Usikov/Zilbershtein pathway. The texture development in both α and ω phases of Zr during high-pressure torsion is quantified and explained in terms of the dominant slip system and the orientation relationship during martensitic transformation.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5087721