Bezold A, Volz N, Xue F, Neumeier S, Göken M (2022)
Publication Type: Journal article
Subtype: other
Publication year: 2022
Book Volume: 1
Pages Range: 243-253-253
Journal Issue: 3
The defect evolution associated with an anomalous work hardening behavior of a single crystalline quaternary Co-Al-W-Ta superalloy at 950 °C was investigated by transmission electron microscopy. As plastic deformation is initially confined to the γ matrix channels, a plateau arises in the stress-strain curve after yielding. At about 1% plastic strain, extensive shearing of the γ′ precipitates under superlattice stacking fault formation occurs leading to extreme work hardening rates up to 12 GPa and a total increase in stress of about 200 MPa. Additional investigations on the temperature and strain-rate dependence of the anomalous work hardening behavior reveal the significance of diffusion and segregation processes on the stress-strain curve and the work hardening behavior.
APA:
Bezold, A., Volz, N., Xue, F., Neumeier, S., & Göken, M. (2022). Anomalous Work Hardening Behavior of a Single Crystalline Co-Base Superalloy. Alloys, 1(3), 243-253-253. https://doi.org/10.3390/alloys1030015
MLA:
Bezold, Andreas, et al. "Anomalous Work Hardening Behavior of a Single Crystalline Co-Base Superalloy." Alloys 1.3 (2022): 243-253-253.
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