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

Publication date: 15 March 2020Source: Journal of Alloys and Compounds, Volume 817Author(s): Jing Wen, Nathalie Allain, Eric FleuryAbstractSince 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.

Source: Journal of Alloys and Compounds - December 12, 2019 Category: Chemistry Source Type: research