Data are presented on specific heat capacity, upper critical field, transition temperature and residual electrical resistivity of Nb
I-xTi
x(

) foils, which are cold deformed, recrystallized, He+ implanted and reannealed after irradiation. The Sommerfeld constant γ, the Debye temperature θ
Dand the Ginzburg-Landau parameter

ρnγ
1/2are determined and analysed.