Modeling of precipitation strengthening in Inconel 718 including non-spherical gamma '' precipitates

Mohammad Reza Ahmadi; markus Rath; Erwin Povoden-Karadeniz; Sophie Primig; Tomasch Wojcik; Anette Danninger; Martin Stockinger; Ernst Kozeschnik

Modeling of precipitation strengthening in Inconel 718 including non-spherical gamma '' precipitates

Mohammad Reza Ahmadi, markus Rath, Erwin Povoden-Karadeniz, Sophie Primig, Tomasch Wojcik, Anette Danninger, Martin Stockinger, Ernst Kozeschnik

Institut für Werkstoffkunde, Fügetechnik und Umformtechnik (3030)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

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.

Originalsprache	englisch
Aufsatznummer	055005
Seitenumfang	16
Fachzeitschrift	Modelling and Simulation in Materials Science and Engineering
Jahrgang	25
Ausgabenummer	5
Publikationsstatus	Veröffentlicht - Juli 2017

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Modeling of precipitation strengthening in Inconel 718 including non-spherical gamma '' precipitates. / Ahmadi, Mohammad Reza; Rath, markus; Povoden-Karadeniz, Erwin; Primig, Sophie; Wojcik, Tomasch; Danninger, Anette; Stockinger, Martin; Kozeschnik, Ernst.

in: Modelling and Simulation in Materials Science and Engineering, Jahrgang 25, Nr. 5, 055005, 07.2017.

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

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abstract = "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.",

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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

M3 - Article

VL - 25

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 -

Modeling of precipitation strengthening in Inconel 718 including non-spherical gamma '' precipitates

Abstract

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