@misc{song_microstructure_evolution_2019, author={Song, L.,Hu, X.,Wang, L.,Stark, A.,Lazurenko, D.,Lorenz, U.,Lin, J.,Pyczak, F.,Zhang, T.}, title={Microstructure evolution and enhanced creep property of a high Nb containing TiAl alloy with carbon addition}, year={2019}, howpublished = {journal article}, doi = {https://doi.org/10.1016/j.jallcom.2019.151649}, abstract = {The microstructure evolution and carbide precipitation in a Ti-46Al-8Nb-0.7C alloy as well as its creep properties at intermediate temperatures are investigated by high-energy X-ray diffraction and electron microscopy. The alloy with a nearly fully lamellar microstructure exhibits excellent creep resistance, which could be attributed to the good microstructural stability and strengthening effects from both P- and H-carbides. It is also found that the creep parameters have different effects on the precipitation of the carbides. The overall volume fraction of the carbides shows a positive correlation with the creep temperature and time. However, the thermal stability of P-carbides in the γ grain interior decreases at a higher creep temperature. The creep stress hardly affects the precipitation and morphology development of the P-carbides. On the contrary, a higher stress can promote the H-carbide formation at the γ/α2 interfaces via α2 lath decomposition in lamellar colonies.}, note = {Online available at: \url{https://doi.org/10.1016/j.jallcom.2019.151649} (DOI). Song, L.; Hu, X.; Wang, L.; Stark, A.; Lazurenko, D.; Lorenz, U.; Lin, J.; Pyczak, F.; Zhang, T.: Microstructure evolution and enhanced creep property of a high Nb containing TiAl alloy with carbon addition. Journal of Alloys and Compounds. 2019. vol. 807, 151649. DOI: 10.1016/j.jallcom.2019.151649}}