Phase Transformations in Ti-V-Cr-H Composition
Occurrence of phase transitions in TixVyCrz-H systems was analyzed versus temperature. Hydrogen evacuates from the hydrogenated compounds via two main steps. The 1st step corresponds to the destabilization of the fcc hydrogenated lattice leading to a fcc → bcc martensitic type transformation. The 2nd step occurs according to the decomposition of the resulting hydride via evacuation of hydrogen from the bcc lattice. Both the kinetics and temperature of 1st and 2nd step transformations depend on the composition of the starting TixVyCrz alloys.
J.-L. Bobet, B. Chevalier and D. Fruchart
N.E. Skryabina et al., "Phase Transformations in Ti-V-Cr-H Composition", Solid State Phenomena, Vol. 170, pp. 302-306, 2011