Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation

Khaled Alharbi; Hassan Ghadbeigi; Panos Efthymiadis; Mohammad Zanganeh; Steven Celotto; Richard Dashwood; Christophe Pinna

doi:10.1088/0965-0393/23/8/085005

Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation

Khaled Alharbi, Hassan Ghadbeigi, Panos Efthymiadis, Mohammad Zanganeh, Steven Celotto, Richard Dashwood, Christophe Pinna

Vice-Chancellor's Office

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Abstract

Microstructure failure mechanisms and void nucleation in dual-phase (DP) steels during deformation have been studied using a combination of in situ tensile testing in a scanning electron microscope (SEM), digital image correlation (DIC) and finite element (FE) modelling. SEM images acquired during in situ tests were used to follow the evolution of damage within the microstructure of a DP1000 steel. From these images, strain maps were generated using DIC and used as boundary conditions for a FE model to investigate the stress state of martensite and ferrite before the onset of the martensite phase cracking. Based on the simulation results, a maximum principal stress of about 1700 MPa has been estimated for crack initiation in the martensite of the investigated DP1000 steel. The SEM image observations in combination with the FE analyses provide new insights for the development of physically-based damage models for DP-steels.

Original language	English
Article number	085005
Journal	Modelling and Simulation in Materials Science and Engineering
Volume	23
Issue number	8
DOIs	https://doi.org/10.1088/0965-0393/23/8/085005
Publication status	Published - 9 Oct 2015

Keywords

digital image correlation
dual-phase steels
martensite fracturing
microstructure simulation

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10.1088/0965-0393/23/8/085005Licence: CC BY

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Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation. / Alharbi, Khaled; Ghadbeigi, Hassan; Efthymiadis, Panos; Zanganeh, Mohammad; Celotto, Steven; Dashwood, Richard; Pinna, Christophe.

In: Modelling and Simulation in Materials Science and Engineering, Vol. 23, No. 8, 085005, 09.10.2015.

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

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title = "Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation",

abstract = "Microstructure failure mechanisms and void nucleation in dual-phase (DP) steels during deformation have been studied using a combination of in situ tensile testing in a scanning electron microscope (SEM), digital image correlation (DIC) and finite element (FE) modelling. SEM images acquired during in situ tests were used to follow the evolution of damage within the microstructure of a DP1000 steel. From these images, strain maps were generated using DIC and used as boundary conditions for a FE model to investigate the stress state of martensite and ferrite before the onset of the martensite phase cracking. Based on the simulation results, a maximum principal stress of about 1700 MPa has been estimated for crack initiation in the martensite of the investigated DP1000 steel. The SEM image observations in combination with the FE analyses provide new insights for the development of physically-based damage models for DP-steels.",

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AU - Alharbi, Khaled

AU - Ghadbeigi, Hassan

AU - Efthymiadis, Panos

AU - Zanganeh, Mohammad

AU - Celotto, Steven

AU - Dashwood, Richard

AU - Pinna, Christophe

PY - 2015/10/9

Y1 - 2015/10/9

N2 - Microstructure failure mechanisms and void nucleation in dual-phase (DP) steels during deformation have been studied using a combination of in situ tensile testing in a scanning electron microscope (SEM), digital image correlation (DIC) and finite element (FE) modelling. SEM images acquired during in situ tests were used to follow the evolution of damage within the microstructure of a DP1000 steel. From these images, strain maps were generated using DIC and used as boundary conditions for a FE model to investigate the stress state of martensite and ferrite before the onset of the martensite phase cracking. Based on the simulation results, a maximum principal stress of about 1700 MPa has been estimated for crack initiation in the martensite of the investigated DP1000 steel. The SEM image observations in combination with the FE analyses provide new insights for the development of physically-based damage models for DP-steels.

AB - Microstructure failure mechanisms and void nucleation in dual-phase (DP) steels during deformation have been studied using a combination of in situ tensile testing in a scanning electron microscope (SEM), digital image correlation (DIC) and finite element (FE) modelling. SEM images acquired during in situ tests were used to follow the evolution of damage within the microstructure of a DP1000 steel. From these images, strain maps were generated using DIC and used as boundary conditions for a FE model to investigate the stress state of martensite and ferrite before the onset of the martensite phase cracking. Based on the simulation results, a maximum principal stress of about 1700 MPa has been estimated for crack initiation in the martensite of the investigated DP1000 steel. The SEM image observations in combination with the FE analyses provide new insights for the development of physically-based damage models for DP-steels.

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KW - dual-phase steels

KW - martensite fracturing

KW - microstructure simulation

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JO - Modelling and Simulation in Materials Science and Engineering

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SN - 0965-0393

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Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation

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