TY - JOUR
T1 - Modeling of precipitation strengthening in Inconel 718 including non-spherical γ'' precipitates
AU - Ahmadi, Mohammad Reza
AU - Rath, markus
AU - Povoden-Karadeniz, Erwin
AU - Primig, sophie
AU - Wojcik, Tomasch
AU - Danninger, Anette
AU - Stockinger, Martin
AU - kozeschnik, Ernst
PY - 2017/7
Y1 - 2017/7
N2 - In this study, the classical strengthening equations for weak and strong particles are advanced to account for oblate-shaped gamma '' 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 gamma '' 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 - precipitation strengthening, shearing mechanism, oblate precipitate
U2 - 10.1088/1361-651X/aa6f54
DO - 10.1088/1361-651X/aa6f54
M3 - Article
SN - 0965-0393
VL - 25
SP - 1
EP - 16
JO - Modelling and Simulation in Materials Science and Engineering
JF - Modelling and Simulation in Materials Science and Engineering
IS - 5
M1 - 055005
ER -