@misc{bauer_influence_of_2015, author={Bauer, A., Neumeier, S., Pyczak, F., Goeken, M.}, title={Influence of Iridium on the Properties of Gamma′-Strengthened Co-Base Superalloys}, year={2015}, howpublished = {journal article}, doi = {https://doi.org/10.1002/adem.201400266}, abstract = {The influence of iridium on the phase stability, oxidation behavior, and high temperature creep strength of γ′-hardened Co-base superalloys is discussed. Ir increases the γ′-solvus temperature and γ′-volume fraction since it partitions slightly to the γ′-phase. However, Ir leads also to a discontinuous precipitation transformation of the metastable γ/γ′-microstructure into a lamellar microstructure of Co3W, CoAl, and a Co-rich fcc phase for the W-rich alloys. A reduction of W in presence of Ir leads to a higher phase stability. The constrained lattice misfit between the γ and γ′ phase in the Ir and high W containing alloy is +0.5%. The alloying element Ir strongly increases the creep strength at 850 °C as long as the γ/γ′-microstructure is not discontinuously transformed. Furthermore, the oxidation resistance is improved by the addition of iridium.}, note = {Online available at: \url{https://doi.org/10.1002/adem.201400266} (DOI). Bauer, A.; Neumeier, S.; Pyczak, F.; Goeken, M.: Influence of Iridium on the Properties of Gamma′-Strengthened Co-Base Superalloys. Advanced Engineering Materials. 2015. vol. 17, no. 6, 748-754. DOI: 10.1002/adem.201400266}}