Ti-6554 Alloy

Alloy name: Ti-6554
Diagram No.: 635
Type of diagram: TTT
Chemical composition in weight %: Ti-6Cr-5Mo-5V-4Al alloy (Ti-6554): 5.7% Cr, 4.7% Mo, 4.81% V, 3.93% Al, 0.08% Fe, 0.028% Si, 0.025% V, balance is Ti
Alloy group: Titanium-based alloys
Note: TTT curve of Ti-6554 alloy. Metallographic method was used for the determination of TTT curve of Ti-6554 titanium alloy. The results show that the 'nose'temperature of isothermal transformation is about 540 C. When the alloy is aged at 540 C, alpha phase precipitates fastest, and only 5 min is needed. Moreover, this alloy has fast aging response. When the alloy is aged at 480-600 C, the beginning time of alpha phase precipitated from metastable beta phase is less than 30 min.
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