Modeling of precipitation strengthening in Inconel 718 including non-spherical γ" precipitates

Mohammed Reza Ahmadi; Markus Rath; Erwin Povoden-Karadeniz; Sophie Primig; Tomasz Wojcik; Anette Danninger; Martin Stockinger; Ernst Kozeschnik

doi:10.1088/1361-651X/aa6f54

Modeling of precipitation strengthening in Inconel 718 including non-spherical γ" precipitates

Mohammed Reza Ahmadi
, Markus Rath
, Erwin Povoden-Karadeniz
, Sophie Primig
, Tomasz Wojcik
, Anette Danninger
, Martin Stockinger
, Ernst Kozeschnik

Technische Universität Graz
Technische Universität Wien
Universität Neusüdwales, Sydney
voestalpine Böhler Aerospace GmbH & Co KG, Kapfenberg

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

14 Zitate (Scopus)

Abstract

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.

Originalsprache	Englisch
Aufsatznummer	055005
Seitenumfang	17
Fachzeitschrift	Modelling and simulation in materials science and engineering
Jahrgang	25.2017
Ausgabenummer	5
DOIs	https://doi.org/10.1088/1361-651X/aa6f54
Publikationsstatus	Veröffentlicht - 15 Mai 2017
Extern publiziert	Ja

Schlagwörter

precipitation kinetics
numerical modeling
alloy 718
morphology

Zugriff auf Dokument

10.1088/1361-651X/aa6f54

Andere Dateien und Links

Link to publication in Scopus

Dieses zitieren

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title = "Modeling of precipitation strengthening in Inconel 718 including non-spherical γ{"} precipitates",

abstract = "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.",

keywords = "Oblate precipitate, Precipitation strengthening, Shearing mechanism, precipitation kinetics, numerical modeling, alloy 718, morphology",

author = "Ahmadi, \{Mohammed Reza\} and Markus Rath and Erwin Povoden-Karadeniz and Sophie Primig and Tomasz Wojcik and Anette Danninger and Martin Stockinger and Ernst Kozeschnik",

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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 - https://www.scopus.com/pages/publications/85020889181

U2 - 10.1088/1361-651X/aa6f54

DO - 10.1088/1361-651X/aa6f54

M3 - Article

AN - SCOPUS:85020889181

SN - 0965-0393

VL - 25.2017

JO - Modelling and simulation in materials science and engineering

JF - Modelling and simulation in materials science and engineering

IS - 5

M1 - 055005

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