Micromechanical Modelling of Microtexture Formation in Low Alloy Steel Bainite

Sophie Lubin; Anne Francoise Gourgues-Lorenzon; Brigitte Bacroix; Hélène Réglé

doi:10.4028/www.scientific.net/SSP.172-174.1228

Paper Titles

Kinetics of the Austenite-Ferrite Transformation with and without Applied Stress
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A Convex Hull Algorithm for Minimization of Gibbs Energy in Two-Phase Multicomponent Alloys
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An Equation of State of Amorphous β-Boron under High Pressure.
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Simulation of Atomic Structure and Diffusion Characteristics of Point Defects in BCC and FCC Metals
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Micromechanical Modelling of Microtexture Formation in Low Alloy Steel Bainite
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Atomic Density Function Simulations of Crystal Growth Kinetics of FCC Crystal and BCC-FCC Transition
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In Situ Synchrotron X-Ray Diffraction Investigation of the Fast Recovery of Microstructure during Electropulse Treatment of Heavily Cold Drawn Nanocrystalline Ni-Ti Wires
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Application of Advanced Experimental Techniques for the Microstructural Characterization of Nanobainitic Steels
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In Situ Analysis of Effects of Transformation Strain on the Austenite Phase during Martenistic Transformation of Cr-Ni Steel
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Micromechanical Modelling of Microtexture Formation in Low Alloy Steel Bainite

Abstract:

A micromechanical model was developed to account for the particular microtexture of upper bainite in low alloy steels, i.e. the non-random spatial distribution of variants within a given former austenite grain. A self-consistent scheme and an Eshelby approach, considering both transformation shape strain and viscoplastic strain as eigenstrains, was applied to estimate coupling between parent austenite and two or more bainite variants without any applied stress. Model predictions concerning self-accommodation between variants are sensitive to the plane of the first “lattice invariant shear” in the crystallographic model used to determine the shape strain. No obvious effect of the constitutive equations of phases and of the other model parameters was found.

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Periodical:

Solid State Phenomena (Volumes 172-174)

Pages:

1228-1233

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.1228

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Online since:

June 2011

Authors:

Sophie Lubin, Anne Francoise Gourgues-Lorenzon, Brigitte Bacroix, Hélène Réglé

Keywords:

Bainite, Micro-Mechanical Modelling, Self-Accommodation, Variant Selection

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