Bezold A, Volz N, Lenz M, Zenk C, Spiecker E, Mills MJ, Göken M, Neumeier S (2021)
Publication Type: Journal article, Original article
Subtype: other
Publication year: 2021
Book Volume: 200
Pages Range: 113928
DOI: 10.1016/j.scriptamat.2021.113928
The anomalous yielding behavior known from Ni3Al or Ni-base superalloys is explained by the formation of immobile dislocation configurations via cross-slip of the leading superpartial of anti-phase boundary-coupled dislocation pairs. A systematic investigation of the anomalous yielding behavior of a single-crystalline Co-11Ti-15Cr superalloy by transmission electron microscopy revealed the absence of similar sessile dislocation configurations during the initial yielding stage. Shearing of γ' precipitates via superlattice stacking fault formation is the dominant deformation mechanism at the peak temperature. Furthermore, the high density of superlattice stacking faults and their interactions also lead to a pronounced work-hardening anomaly.
APA:
Bezold, A., Volz, N., Lenz, M., Zenk, C., Spiecker, E., Mills, M.J.,... Neumeier, S. (2021). Yielding behavior of a single-crystalline γ'-strengthened Co-Ti-Cr superalloy. Scripta Materialia, 200, 113928. https://doi.org/10.1016/j.scriptamat.2021.113928
MLA:
Bezold, Andreas, et al. "Yielding behavior of a single-crystalline γ'-strengthened Co-Ti-Cr superalloy." Scripta Materialia 200 (2021): 113928.
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