MARTENSITIC TRANSFORMATIONS AND UNELASTIC BEHAVIOR IN HYDROGEN-BEARING TITANIUM-ALLOYS

Effect of hydrogen as a constant alloying element on the mechanism and kinetics of the beta reversible arrow alpha '' martensitic transforma tion (MT) is Studied in titanium-based alloys of hypocritical composit ion. Crystallographic and kinetic parameters of MT as well as the spec ial features of the microstructure and substructure of the alpha '' ma rtensite in the hydrogen-bearing alloys art determined. The diagrams p ermitting the phase composition of the alloys after quenching from bet a and alpha + beta fields and after cooling from beta field at differe nt Fates to he predicted were constructed using an alloy VT23 as an ex ample.