Modeling of precipitation strengthening in Inconel 718 including non-spherical γ" precipitates
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in: Modelling and simulation in materials science and engineering, Jahrgang 25.2017, Nr. 5, 055005, 15.05.2017.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Modeling of precipitation strengthening in Inconel 718 including non-spherical γ" precipitates
AU - Ahmadi, Mohammed Reza
AU - Rath, Markus
AU - Povoden-Karadeniz, Erwin
AU - Primig, Sophie
AU - Wojcik, Tomasz
AU - Danninger, Anette
AU - Stockinger, Martin
AU - Kozeschnik, Ernst
PY - 2017/5/15
Y1 - 2017/5/15
N2 - In this study, the classical strengthening equations for weak and strong particles are advanced to account for oblate-shaped γ'' precipitates in Inconel 718. The model is verified on quantitative stereology of size and distribution for both shearable and non-shearable mechanisms. The evolution of precipitation strengthening of aged superalloy Inconel 718 is simulated. In addition to precipitation strengthening, contributions of solid solution strengthening and the grain size effect are considered. Simulation results indicate a sound prediction of the final yield strength based on the presented model.
AB - In this study, the classical strengthening equations for weak and strong particles are advanced to account for oblate-shaped γ'' precipitates in Inconel 718. The model is verified on quantitative stereology of size and distribution for both shearable and non-shearable mechanisms. The evolution of precipitation strengthening of aged superalloy Inconel 718 is simulated. In addition to precipitation strengthening, contributions of solid solution strengthening and the grain size effect are considered. Simulation results indicate a sound prediction of the final yield strength based on the presented model.
KW - Oblate precipitate
KW - Precipitation strengthening
KW - Shearing mechanism
KW - precipitation kinetics
KW - numerical modeling
KW - alloy 718
KW - morphology
UR - http://www.scopus.com/inward/record.url?scp=85020889181&partnerID=8YFLogxK
U2 - 10.1088/1361-651X/aa6f54
DO - 10.1088/1361-651X/aa6f54
M3 - Article
AN - SCOPUS:85020889181
VL - 25.2017
JO - Modelling and simulation in materials science and engineering
JF - Modelling and simulation in materials science and engineering
SN - 0965-0393
IS - 5
M1 - 055005
ER -
