Characterization of Yttrium-Rich Precipitate Phases in a Titanium Alloy Weld
Andrew Herzing, Ratna P. Kolli, Sreeramamurthy Ankem
The yttrium-rich (Y-rich) precipitates that form in the fusion zone (FZ) of a Ti-5111 alloy weld were characterized by atom probe tomography and scanning transmission electron microscopy. Two distinct types of precipitates were identified: (1) a higher number density of a nanoscale YAl2 phase, and (2) a lower apparent number density of a larger Y-rich phase that is possibly Y2O3 or Y2O2S. Both types of precipitates can contribute to the reduced hardening and improved ductility of the FZ.
, Kolli, R.
and Ankem, S.
Characterization of Yttrium-Rich Precipitate Phases in a Titanium Alloy Weld, Materials Characterization, [online], https://doi.org/10.1016/j.matchar.2016.10.014
(Accessed September 28, 2023)