The defects which were generated in the lattice were observed, by means of transmission electron microscopy, after H absorption and desorption at increasing H concentrations. Two basic types of dislocation, ripple-like facile dislocations and misfit super-dislocations, with Burgers vectors of <hkl> and (hk0), respectively, were observed. Following the full absorption and desorption of H, the generation and dynamic recovery of these dislocations resulted in the creation of well-developed dislocation walls and slip-band structures. Structural disorder and micro-twins were also sometimes observed. Macroscopic effects, such as solubility enhancement in the -phase, anisotropic X-ray peak broadening and large amounts of stored energy in the activated material, were attributed to dislocations and anti-structural defects.

G.H.Kim, S.G.Lee, K.Y.Lee, C.H.Chun, J.Y.Lee: Acta Metallurgica et Materialia, 1995, 43[6], 2233-40