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

被引：22

作者：

Ahmadi, M. R. ^{[1
]}

Rath, M. ^{[2
]}

Povoden-Karadeniz, E. ^{[3
]}

Primig, S. ^{[4
]}

Wojcik, T. ^{[2
]}

Danninger, A. ^{[2
]}

Stockinger, M. ^{[5
]}

Kozeschnik, E. ^{[2
,3
]}

机构：

[1] Graz Univ Technol, Inst Mat Sci Joining & Forming, Kopernikusgasse 24-1, A-8010 Graz, Austria

[2] Vienna Univ Technol, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria

[3] Vienna Univ Technol, Inst Mat Sci & Technol, Christian Doppler Lab Early Stages Precipitat, Getreidemarkt 9, A-1060 Vienna, Austria

[4] UNSW, UNSW Australia, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[5] Bohler Schmiedetech GmbH & Co KG, Mariazellerstr 25, A-8605 Kapfenberg, Austria

来源：

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING | 2017年 / 25卷 / 05期

关键词：

precipitation strengthening; shearing mechanism; oblate precipitate; MULTICOMPONENT MULTIPHASE SYSTEMS; FE-NI ALLOYS; DIFFUSIONAL MOBILITIES; 718PLUS SUPERALLOY; ATOMIC MOBILITY; CO-FE; NICKEL; CR; 1ST-PRINCIPLES; KINETICS;

D O I：

10.1088/1361-651X/aa6f54

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：16

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