Strengthening Mechanisms in Polycrystalline Multimodal Nickel-Base Superalloys

By R. W. Kozar, A. Suzuki, W. W. Milligan, J. Schirra, M. Savage, Tresa M. Pollock. 2009

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On the prediction of the yield stress of unimodal and multimodal γ′ Nickel-base superalloys (2015, methodology): “[14] have employed a similar expression but they have introduced an additional factor in the denominator to account for the size of the precipitates: L − 2r‡.”
Knowledge of process-structure-property relationships to engineer better heat treatments for laser powder bed fusion additive manufactured Inconel 718 (2019, methodology): “Using established values for IN718: friction stress σ0 (325 MPa) [83], the Hall– Petch coefficient k (750 MPa μm1/2) [84], shear modulus G (80 GPa) [85], Burgers vector b (0.”
Influence of heat treatment on the microstructure and tensile properties of Ni-base superalloy Haynes 282 (2017, background): “In particular, yield strength predictions received renewed attention in recent years, with a number of models for unimodal [38] and multimodal [39, 40] Ni-base superalloys being proposed.”
A crystal plasticity model incorporating the effects of precipitates in superalloys: Application to tensile, compressive, and cyclic deformation of Inconel 718 (2017, neutral): “The theory has widely been used for Ni-based superalloys (Kozar et al., 2009; Maciejewski et al., 2013).”