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Determination of orientation relationships between FCC-hydride and HCP-titanium and their correlation with hydrides distribution

Abstract : Since the crystallographic orientation relationships (ORs) play an important role in the hydrides precipitation as well as in the deformation behavior of α-titanium alloys containing hydrides, the present work aimed at exploring thoroughly the ORs and their interface planes between the fcc-hydride and the α-titanium using the stereographic projections of the corresponding OR plane and OR direction and a trace analysis. In addition to the general reported two ORs in the α-titanium, a new OR closely related to the texture component of the rolled Ti-sheet is also determined in the present work. The overall identified ORs and their interface planes are accounted for by edge-to-edge matching model. Furthermore, a quantitative analysis using the high-angular resolution SEM-EBSD highlighted the dependency of hydride distribution on the ORs and the parent grain orientation.
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https://hal.univ-lorraine.fr/hal-02534639
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Submitted on : Tuesday, April 7, 2020 - 11:03:13 AM
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Jing Wen, Nathalie Allain, Eric Fleury. Determination of orientation relationships between FCC-hydride and HCP-titanium and their correlation with hydrides distribution. Journal of Alloys and Compounds, Elsevier, 2020, 817, pp.153297. ⟨10.1016/j.jallcom.2019.153297⟩. ⟨hal-02534639⟩

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