Reverse Transformation of α″ and Initial β Decomposition in Quenched Ti-Nb Binary Alloys

Effects of Sn and Zr Additions on Phase Constitution and Aging Behavior of Ti-50 mass%Ta Alloys Quenched from β Single Phase Region

“…The reasons for these results are not clear at present, but they may be ascribed to the decrease in isothermal !-phase precipitates caused by Zr addition, in a similar manner to Al and Sn addition. 8) Phase separation of into 1 and 2 was identified at 823 K; the separation became clear at 873 K. HV in Ti-50Ta-20Zr decreased more gradually than in Ti-50Ta and Ti-50Ta-10Zr between 823 and 923 K (Fig. 6).…”

Phase Decomposition in a Ti-13Nb-13Zr Alloy during Aging at 600°C

“…They are confirmed to be α martensite from the diffraction pattern in (d). In titanium alloys two types of martensitic phase α [12][13][14] and α 11,[15][16][17][18][19][20][21][22][23][24][25][26][27] could be observed. With increasing in β-stabilized element such as Nb, Ta, and V, α rather than α is prefer to be formed during quenching from β phase field.…”

Effect of Cooling Rate on Superelasticity and Microstructure Evolution in Ti-10V-2Fe-3Al and Ti-10V-2Fe-3Al-0.2N Alloys

“…22) On the other hand, the increase in resistivity is attributed to the fluctuation of the concentration of alloying elements such as G.P. zone or spinodal decomposition 23) although there is no clear evidence in titanium alloys at the present time. To clarify the origin of the increase in electrical resistivity, the microstructure change, especially the change in !…”