@misc{wang_identification_of_2019, author={Wang, L., Song, L., Stark, A., Liu, Y., Oehring, M., Lorenz, U., Pyczak, F.}, title={Identification of Laves phases in a Zr or Hf containing γ-γ′ Co-base superalloy}, year={2019}, howpublished = {journal article}, doi = {https://doi.org/10.1016/j.jallcom.2019.07.121}, abstract = {ZrCo2 and HfCo2 Laves phases were found and characterized in γ-γ′ Co-base superalloys using high-energy X-ray diffraction, energy dispersive X-ray spectroscopy and transmission electron microscopy. They formed during casting and are stable during long-term annealing at 900 °C. The ZrCo2 phase with a cubic MgCu2-type structure exhibits numerous nano-twins and stacking faults, while HfCo2 has a hexagonal MgNi2-type structure instead of MgCu2-type in contrast to literature. Their chemical compositions strongly deviated from stoichiometry and significant amounts of Al and W are contained in these phases. These could affect the atomic radius ratio and valence electron concentration and thus change the structure of the Laves phases.}, note = {Online available at: \url{https://doi.org/10.1016/j.jallcom.2019.07.121} (DOI). Wang, L.; Song, L.; Stark, A.; Liu, Y.; Oehring, M.; Lorenz, U.; Pyczak, F.: Identification of Laves phases in a Zr or Hf containing γ-γ′ Co-base superalloy. Journal of Alloys and Compounds. 2019. vol. 805, 880-886. DOI: 10.1016/j.jallcom.2019.07.121}}