The thermodynamic possibility of interaction between products of LaNi5, TiFe, Ti2Ni, TiNi, Ti2Cu, TiCu, Ti3Al, TiAl, Mg2Ni, Mg2Cu, and ZrMn2.8 destructive hydrogenation and their interaction with gases (nitrogen, ammonia, methane, water vapor, carbon dioxide and oxide) is studied. The recombination of intermetallics from hydride phases and metals is thermodynamically favored in the temperature range suitable for inverse hydrogen accumulation. The minimum temperature for the recombination of intermetallics in hydrogen is directly proportional to the titanium content of an intermetallic and products of its destructive hydrogenation. The recombination of Ti3Al proceeds in hydrogen at 1.0 MPa and 1073 K from products of its destructive hydrogenation. The thermodynamic possibility for the transformation of interacting products from destructive hydrogenation of titanium-based intermetallics into noninteracting ones by replacement of titanium hydride by titanium nitride, carbide, or oxide during interaction with nitrogen or ammonia, methane or carbon, CO2, CO, or H2O is proved. Heat-resistant TiH2–TiN–Ti3Al–TiAl composite is obtained by annealing the products of Ti3Al destructive hydrogenation (TiH x –Ti3Al–TiAl2–TiAl) in nitrogen at 2.0 MPa and 1073 K.