Modeling Grain Boundary Mobility during Dynamic Recrystallization of Metallic Alloys

Frank Montheillet; Gilles Damamme; David Piot; S. Lee Semiatin

doi:10.4028/www.scientific.net/MSF.638-642.2303

Paper Titles

Effects of Surface Recrystallization on the Microstructures and Creep Properties of Single Crystal Superalloy DD6
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Morphology of γ' Precipitates in Second Stage High Pressure Turbine Blade of Single Crystal Nickel-Based Superalloy after Serviced
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New Creep Deformation Concept Based on Creep under Lower Stresses
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Creep Behavior and Microstructure of 8Cr Oxide Dispersion Strengthened Martensitic Steel
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Microstructure Evolution in a 9%Cr Heat Resistant Steel during Creep Tests
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Dynamic Recrystallization Modeling during Hot Forging of a Nickel Based Superalloy
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Metadynamic Recrystallization of the Nickel-Based Superalloy Allvac 718Plus^TM
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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Modeling Grain Boundary Mobility during Dynamic...

Modeling Grain Boundary Mobility during Dynamic Recrystallization of Metallic Alloys

Abstract:

A simple analytical model is proposed for estimating grain boundary mobility during dynamic recrystallization in metallic alloys. The combined effects of solutes (solute drag) and second phase particles (Zener pinning) on mobility are considered. The approach is based on (and is consistent with) a recently published mesoscale model of discontinuous dynamic recrystallization. The dependence of grain boundary mobility on solute concentration and particle size is summarized in the form of two-dimensional maps.

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Materials Science Forum (Volumes 638-642)

Pages:

2303-2308

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.2303

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Online since:

January 2010

Authors:

Frank Montheillet, Gilles Damamme, David Piot, S. Lee Semiatin

Keywords:

Dynamic Recrystallization (DRX), Grain Boundary Mobility, Modeling, Solute Drag, Zener Pinning

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References

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[4] F.J. Humphreys, M. Hatherly: Recrystallization and Related Annealing Phenomena (Elsevier 2004). Acknowledgements. This work was conducted as part of a research program on the modeling of the thermomechanical processing of superalloys, supported by Universal Technology Corporation, Dayton, OH, USA, under Contract N° 08-S587-002-C1. The support and encouragement of the Air Force Office of Scientific Research (Dr. Joan Fuller, Program Manager) is also greatly appreciated.

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