FORMING OF STRUCTURE AND PROPERTIES OF TITANIUM-NIOBIUM ALLOYS WITH HYDROGEN, OF COMPLEXLY-ALLOYED ( alpha + beta )-COMPOUNDS AND PSEUDO- alpha -ALLOYS WITH YTTRIUM IN HEAT TREATMENT

There the study objects are the titanium alloys of titanium - niobium, titanium - niobium - hydrogen, VT18U, titanium - aluminium - iron - vanadium - molybdenum - chromium systems. The change of phase relation in the titanium -niobium alloys in hardening has been ascertained. The formation of massive extractions of omega -phase with size more 100 nm has been detected. The metastable diagram of titanium - niobium - hydrogen has been constructed, on this basis the compound low-alloyed by niobium for the superconductors has been offered. The formation of transitional hydride in the titanium - niobium - hydrogen system has been ascertained. It was showed that the yttrium favours the hindering of grain growth at the expense of adsorption in boundaries. The recommendations for use of complex yttrium - chromium, hafnium - chromium microadditives in VT18U alloy allow to decrease the metal losses by 10%Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio