Dislocation configurations, and their interactions with γ-hydrides, were investigated in cyclically-strained samples which contained 77ppm of H. It was noted that at least 3 sets of dislocations could be activated in hydride precipitates. In order to accommodate the inhomogeneous strain between the matrix and the hydrides, a crystal rotation about the [001]γ//[00▪1]α axis occurred in both of them. Thus, cell structures with misorientations of up to 10° about the same [00▪1]α axis formed, in the matrix, near to the interface. Hydride dissolution and strain-induced hydrides were observed at the intersections of slip bands with hydrides. This was considered to be a process which was controlled by the H-transport effect of slipping dislocations.

Dislocation Interaction with Hydrides in Titanium Containing a Low Hydrogen Concentration. C.Q.Chen, S.X.Li, K.Lu: Philosophical Magazine, 2004, 84[1], 29-43