Volz N, Zenk C, Halvaci T, Matuszewska K, Neumeier S, Göken M (2020)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Subtype: other
Publication year: 2020
Publisher: Springer International Publishing
City/Town: Cham
Pages Range: 901-908-908
ISBN: 978-3-030-51834-9
DOI: 10.1007/978-3-030-51834-9_88
Casting of single-crystalline superalloys is known to be difficult due to a variety of challenges. Co-based superalloysCo-base superalloys, however, promise to show quite good castability compared to Ni-based superalloys, as documented in this manuscript. Therefore, an alloy series, which is designed by changing only the Co-to-Ni ratio, is used to address this topic. In addition to the castingCasting behavior, segregationSegregation and recrystallizationRecrystallization behavior were also investigated, since these are closely related to castingCasting challenges. It was found that in the as-cast state, all alloying elements distribute more homogeneously in the Co-rich alloys which is beneficial for castingCasting. CastingCasting of directionally solidified tubes revealed that the Co-rich alloys show a lower susceptibility to hot tearing and predominantly develop cold cracks. Since cold cracking can be addressed by component design, Co-base superalloysCo-base superalloys are suggested to show a better castability compared to Ni-based superalloys. RecrystallizationRecrystallization, however, is more pronounced for the Co-rich alloys. This might become a problem during castingCasting of single-crystalline Co-base components, if high deformation is introduced in the solidified component.
APA:
Volz, N., Zenk, C., Halvaci, T., Matuszewska, K., Neumeier, S., & Göken, M. (2020). Castability and Recrystallization Behavior of γ′-Strengthened Co-Base Superalloys. In Tin S, Hardy M, Clews J, Cormier J, Feng Q, Marcin J, O'Brien C, Suzuki A (Eds.), (pp. 901-908-908). Cham: Springer International Publishing.
MLA:
Volz, Nicklas, et al. "Castability and Recrystallization Behavior of γ′-Strengthened Co-Base Superalloys." Ed. Tin S, Hardy M, Clews J, Cormier J, Feng Q, Marcin J, O'Brien C, Suzuki A, Cham: Springer International Publishing, 2020. 901-908-908.
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