The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

Dong Feng Li; Catrin M. Davies; Shu Yan Zhang; Calum Dickinson; Noel P. O'Dowd

doi:10.1016/j.actamat.2013.02.038

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

Dong Feng Li, Catrin M. Davies, Shu Yan Zhang, Calum Dickinson, Noel P. O'Dowd

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The micromechanical deformation of an austenitic stainless steel under uniaxial tension at elevated temperature (550 °C) following room-temperature compression has been examined in this work. The study combines micromechanical finite-element modelling and in situ neutron diffraction measurements. Overall, good agreement has been achieved between the measured and simulated stress vs. lattice strain response, when prestrain is accounted for. The results indicate that the introduction of prestrain can significantly influence subsequent microscale deformation and damage development associated with microplasticity and that an appropriate representation of strain history can improve the predictive accuracy at the microscale for a polycrystalline material.

Original language	English
Pages (from-to)	3575-3584
Number of pages	10
Journal	Acta Materialia
Volume	61
Issue number	10
DOIs	https://doi.org/10.1016/j.actamat.2013.02.038
Publication status	Published - Jun 2013

Keywords

Crystal plasticity
Damage evolution
Finite element
Lattice strain
Neutron diffraction

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10.1016/j.actamat.2013.02.038

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title = "The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature",

abstract = "The micromechanical deformation of an austenitic stainless steel under uniaxial tension at elevated temperature (550 °C) following room-temperature compression has been examined in this work. The study combines micromechanical finite-element modelling and in situ neutron diffraction measurements. Overall, good agreement has been achieved between the measured and simulated stress vs. lattice strain response, when prestrain is accounted for. The results indicate that the introduction of prestrain can significantly influence subsequent microscale deformation and damage development associated with microplasticity and that an appropriate representation of strain history can improve the predictive accuracy at the microscale for a polycrystalline material.",

keywords = "Crystal plasticity, Damage evolution, Finite element, Lattice strain, Neutron diffraction",

author = "Li, {Dong Feng} and Davies, {Catrin M.} and Zhang, {Shu Yan} and Calum Dickinson and O'Dowd, {Noel P.}",

year = "2013",

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AU - Li, Dong Feng

AU - Davies, Catrin M.

AU - Zhang, Shu Yan

AU - Dickinson, Calum

AU - O'Dowd, Noel P.

PY - 2013/6

Y1 - 2013/6

N2 - The micromechanical deformation of an austenitic stainless steel under uniaxial tension at elevated temperature (550 °C) following room-temperature compression has been examined in this work. The study combines micromechanical finite-element modelling and in situ neutron diffraction measurements. Overall, good agreement has been achieved between the measured and simulated stress vs. lattice strain response, when prestrain is accounted for. The results indicate that the introduction of prestrain can significantly influence subsequent microscale deformation and damage development associated with microplasticity and that an appropriate representation of strain history can improve the predictive accuracy at the microscale for a polycrystalline material.

AB - The micromechanical deformation of an austenitic stainless steel under uniaxial tension at elevated temperature (550 °C) following room-temperature compression has been examined in this work. The study combines micromechanical finite-element modelling and in situ neutron diffraction measurements. Overall, good agreement has been achieved between the measured and simulated stress vs. lattice strain response, when prestrain is accounted for. The results indicate that the introduction of prestrain can significantly influence subsequent microscale deformation and damage development associated with microplasticity and that an appropriate representation of strain history can improve the predictive accuracy at the microscale for a polycrystalline material.

KW - Crystal plasticity

KW - Damage evolution

KW - Finite element

KW - Lattice strain

KW - Neutron diffraction

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JO - Acta Materialia

JF - Acta Materialia

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ER -

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

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Keywords

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