Table 2 Cluster formulas and their total atom number Z of industrial Ti alloys, in which alloy compositions (in wt.% or at.%), alloy types, phase constitution, and the service temperatures are also listed.

Near α-Ti alloys

α + minor β

Ti-5.8Al-4Sn-3.5Zr-0.7Nb-0.5Mo-0.35Si-0.06 C (wt.%) (IMI834)

Al-Ti_11.7Zr_0.3] (Ti₂Al_0.66Sn_0.26Mo_0.04Nb_0.06Si_0.1)

⁹

600

Ti-6Al-2.75Sn-4Zr-0.4Mo-0.45Si (wt.%) (Ti1100)

[Al-Ti_11.67Zr_0.33] (Ti₂Al_0.68Sn_0.18Mo_0.03Si_0.12)

⁵⁸

Ti-6Al-2.8Sn-4Zr-0.5Mo-0.4Si- 0.1Y (wt.%) (Ti600)

[Al-Ti_11.67Zr_0.33] (Ti₂Al_0.69Sn_0.18Mo_0.04Si_0.11)

⁶¹

Ti-6.2Al-2Sn-3.6Zr-0.7Mo-0.15Si-5W (wt.%) (BT36)

[Al-Ti_13.69Zr_0.31]- (Al_0.83Sn_0.13Mo_0.06Si_0.04W_0.22)

⁶⁰

Ti₃Al-based alloys

(α₂ + B2)/(α₂ + B2 + O)

Ti-23Al-7Nb (Ti₃Al-Nb) (at.%)

[Al-Ti_10.91Nb_1.09]Al_2.58

⁵⁹

650–700

Ti-25Al-8Nb-2Mo-2Ta (at.%)

[Al-Ti_10.08Mo_0.32Nb_1.28Ta_0.32]Al₃

²

Ti-24Al-11Nb (at.%)

[Al-Ti_10.26Nb_1.74]Al_2.79

⁶³

Ti-24Al-12.5 Nb (at.%)

[Al-Ti_10.03Nb_1.97]Al_2.79

⁶⁵

Ti-24Al-17Nb (at.%)

[Al-Ti_9.32Nb_2.68]Al_2.79

⁶⁶

Ti-25Al-10Nb-3V-1Mo (at.%)

[Al-Ti_9.76Mo_0.16Nb_1.6V_0.48]Al₃

¹¹

Ti₂AlNb- based alloys

O + B2 + minor α₂

Ti-25Al-25Nb (at.%)

[Al-Ti₈Nb₄]Al₃

⁶⁸

650–750

Ti-22Al-(23~27)Nb (at.%)

[Al-Ti_8.15Nb_3.85]Al_2.38

⁶⁷

TiAl-based alloys

γ + α₂ + minor β/B2

Ti-44Al-4~6Nb-1Mo (at.%)

[Al-Al_3.04Ti₈Nb_0.8Mo_0.16]Al₃

⁷²

750–950

Ti-43Al-4Nb-1.5Mo-0.1B-0.5 C (at.%)

[Al-Al_3.29Ti₈Nb_0.62Mo_0.23]Al_2.4

⁷³

Ti-43Al-9V-0.2Y (at.%)

[Al-Al_2.46Ti₈V_1.51Y_0.03]Al_3.74

⁷⁴

Ti-46Al-2Cr-2Nb (at.%)

[Al-Al_3.36Cr_0.32Ti₈Nb_0.32]Al₃

⁷⁵

Ti-45Al-4Nb-2Mo (at.%)

[Al-Al_3.02Ti₈Mo_0.33Nb_0.65]Al_3.33

⁷⁶

Ti-47Al-2W-0.2Si (at.%)

[Al-Al_3.65Ti₈W_0.31Si_0.03]Al_2.75

⁷⁷

β-Ti alloys

β + α

Ti-15Mo-5Zr-3Al (wt.%)

[(Al_0.91Mo_0.09)-Ti₁₄]Mo_1.19

⁵⁶

<500

Ti-3Al-5Mo-4.5 V (wt.%) (VT16)

[(Al_0.91Mo_0.09)-Ti₁₄](Mo_0.34V_0.72)

⁷⁸

Ti-5Al-2Sn-2Cr-4Mo-4Zr-1Fe (wt.%) (β-CEZ)

[Al-Ti_13.65Zr_0.35] (Al_0.48Sn_0.13Mo_0.33Fe_0.14Cr_0.31)

⁵⁶

Ti-5Al-2Sn-2Zr-4Mo-4Cr (wt.%) (Ti-17)

[Al-Ti_13.83Zr_0.17] (Al_0.48Sn_0.13Mo_0.33Cr_0.61)

⁵⁶

Ti-7Mo-3Nb-3Cr-3Al (wt.%) (Ti-7333)

[Al_0.91Cr_0.09-Ti₁₄] (Mo_0.6Nb_0.26Cr_0.38)

⁷⁹

Ti-4.5Al-6.5Mo-2Cr-2.6Nb-2Zr- 1Sn (wt.%) (TB17)

[Al-Ti_13.82Zr_0.18] (Al_0.36Sn_0.07Mo_0.55Nb_0.23Cr_0.31)

⁸⁰

Ti-5Al-5Mo-5V-1Fe-1Cr (wt.%) (BT22)

[Al-Ti₁₄] (Al_0.5Mo_0.42Fe_0.14V_0.79Cr_0.16)

²

β/(β + α)

Ti-12Mo (wt.%)

[Mo-Ti₁₄]Ti_0.7

⁸¹

Ti-5.2Mo-6.5Sn-10Zr-10.2 Nb (wt.%)

[(Mo_0.5Sn_0.5)-Ti₁₃Zr₁]Nb

³³

Ti-12Mo-6Zr-2Fe (wt.%) (TMZF)

[(Mo_0.71Fe_0.29)-Ti_13.47Zr_0.53]Mo_0.3

²

Ti-10V-2Fe-3Al (wt.%) (Ti-1023)

[Al_0.88-Ti₁₄](Fe_0.28V_1.55)

⁵⁶

Ti-15Mo-3Al-2.7Nb-0.25Si (wt.%) (β21S)

[Al_0.94-Ti₁₄](Mo_1.33Nb_0.25Si_0.08)

⁵⁶

Ti-1Al-8V-5Fe (wt.%) (1-8-5)

[(Al_0.29Fe_0.7)-Ti₁₄]V_1.22

⁵⁶