3D mapping of orientation variation and local residual stress within individual grains of pearlitic steel using synchrotron dark field X-ray microscopy

C. Yildirim; C. Jessop; J. Ahlström; C. Detlefs; Y. Zhang

doi:10.1016/j.scriptamat.2021.113783

3D mapping of orientation variation and local residual stress within individual grains of pearlitic steel using synchrotron dark field X-ray microscopy

C. Yildirim^*, C. Jessop, J. Ahlström, C. Detlefs, Y. Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Assessing the local residual stress and orientation with nanometer resolution within embedded steel grains has remained challenging. Here we use an advanced synchrotron technique, dark field X-ray microscopy to map 3D lattice variations, including both the crystallographic orientation and lattice strain, within two pro-eutectoid ferrite grains in pearlitic steel. We found an orientation variation up to 0.5° and compressive elastic strain up to 1.8 × 10⁻³ are present in the as-manufactured sample. There is no direct correlation between the measured compressive strain and lattice orientation. The origin of the variations and their influence on the manufacturing process and mechanical properties are discussed.

Original language	English
Article number	113783
Journal	Scripta Materialia
Volume	197
Number of pages	5
ISSN	1359-6462
DOIs	https://doi.org/10.1016/j.scriptamat.2021.113783
Publication status	Published - 2021

Bibliographical note

Funding Information:
C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255. Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567, M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06.

Funding Information:
C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255 . Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567 , M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06.

Keywords

Pearlitic steels
Residual stresses
Synchrotron radiation
X-ray diffraction (XRD)

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@article{86ba26db512147bdb506945af2fdc2e3,

title = "3D mapping of orientation variation and local residual stress within individual grains of pearlitic steel using synchrotron dark field X-ray microscopy",

abstract = "Assessing the local residual stress and orientation with nanometer resolution within embedded steel grains has remained challenging. Here we use an advanced synchrotron technique, dark field X-ray microscopy to map 3D lattice variations, including both the crystallographic orientation and lattice strain, within two pro-eutectoid ferrite grains in pearlitic steel. We found an orientation variation up to 0.5° and compressive elastic strain up to 1.8 × 10−3 are present in the as-manufactured sample. There is no direct correlation between the measured compressive strain and lattice orientation. The origin of the variations and their influence on the manufacturing process and mechanical properties are discussed.",

keywords = "Pearlitic steels, Residual stresses, Synchrotron radiation, X-ray diffraction (XRD)",

author = "C. Yildirim and C. Jessop and J. Ahlstr{\"o}m and C. Detlefs and Y. Zhang",

note = "Funding Information: C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255. Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567, M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06. Funding Information: C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255 . Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567 , M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06. ",

year = "2021",

doi = "10.1016/j.scriptamat.2021.113783",

language = "English",

volume = "197",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Pergamon Press",

}

TY - JOUR

T1 - 3D mapping of orientation variation and local residual stress within individual grains of pearlitic steel using synchrotron dark field X-ray microscopy

AU - Yildirim, C.

AU - Jessop, C.

AU - Ahlström, J.

AU - Detlefs, C.

AU - Zhang, Y.

N1 - Funding Information: C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255. Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567, M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06. Funding Information: C.Y. thanks Onderzoeks Centrum voor de Aanwending van Staal (OCAS), Belgium, for the financial support of this project. This work has been a part of research activities within the Centre of Excellence CHARMEC (CHAlmers Railway MEChanics, www.charmec.chalmers.se). Parts of the study has been funded within the European Union's Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No 826255 . Y.Z. acknowledges the support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 788567 , M4D). Assoc Prof Fang Liu are acknowledged for careful sample preparation. Finally, the authors acknowledge the ESRF for provision of beamtime on ID06.

PY - 2021

Y1 - 2021

N2 - Assessing the local residual stress and orientation with nanometer resolution within embedded steel grains has remained challenging. Here we use an advanced synchrotron technique, dark field X-ray microscopy to map 3D lattice variations, including both the crystallographic orientation and lattice strain, within two pro-eutectoid ferrite grains in pearlitic steel. We found an orientation variation up to 0.5° and compressive elastic strain up to 1.8 × 10−3 are present in the as-manufactured sample. There is no direct correlation between the measured compressive strain and lattice orientation. The origin of the variations and their influence on the manufacturing process and mechanical properties are discussed.

AB - Assessing the local residual stress and orientation with nanometer resolution within embedded steel grains has remained challenging. Here we use an advanced synchrotron technique, dark field X-ray microscopy to map 3D lattice variations, including both the crystallographic orientation and lattice strain, within two pro-eutectoid ferrite grains in pearlitic steel. We found an orientation variation up to 0.5° and compressive elastic strain up to 1.8 × 10−3 are present in the as-manufactured sample. There is no direct correlation between the measured compressive strain and lattice orientation. The origin of the variations and their influence on the manufacturing process and mechanical properties are discussed.

KW - Pearlitic steels

KW - Residual stresses

KW - Synchrotron radiation

KW - X-ray diffraction (XRD)

U2 - 10.1016/j.scriptamat.2021.113783

DO - 10.1016/j.scriptamat.2021.113783

M3 - Journal article

AN - SCOPUS:85100755028

VL - 197

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

M1 - 113783

ER -