Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model

Jiahao Cheng; Somnath Ghosh

doi:10.1007/978-3-319-52392-7_26

Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model

Jiahao Cheng
, Somnath Ghosh

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

An advanced, image-based crystal plasticity FE model is developed for predicting discrete twin formation and associated heterogeneous deformation in the single and polycrystalline microstructure of Magnesium. Twin formation is sensitive to the underlying microstructure and is responsible for the premature failure of Mg. The physics of nucleation, propagation, and growth of deformation-twins are considered in the CPFE formulation. The twin nucleation model is based on dissociation of sessile dislocations into stable twin loops, while propagation is assumed by layer-by-layer atoms shearing on twin planes and shuffling to reduce the energy barrier. A non-local FE-based computational framework is developed to implement the twin nucleation and propagation laws, which governs the explicit formation of each individual twin. The simulation matches satisfactorily with the experiments in the stress-strain-response and predicts heterogeneous twin formation with strain localization.

Original language	English
Title of host publication	Magnesium Technology 2017
Editors	Neale R. Neelameggham, Alok Singh, Kiran N. Solanki, Dmytro Orlov
Publisher	Springer International Publishing
Pages	167-174
Number of pages	8
ISBN (Print)	9783319523910
DOIs	https://doi.org/10.1007/978-3-319-52392-7_26
State	Published - 2017
Externally published	Yes
Event	International Symposium on Magnesium Technology, 2017 - San Diego, United States Duration: Feb 26 2017 → Mar 2 2017

Publication series

Name	Minerals, Metals and Materials Series
Volume	Part F8
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	International Symposium on Magnesium Technology, 2017
Country/Territory	United States
City	San Diego
Period	02/26/17 → 03/2/17

Funding

This work has been supported by a GOALI research program sponsored by the National Science Foundation, Mechanics and Structure of Materials Program through Grant No. CMMI-1100818 (Program Manager: Dr. Kara Peters). The authors gratefully acknowledge this support. They thank their GOALI partner General Motors R&D for their support of this research. Computing support by the Homewood High Performance Compute Cluster (HHPC) and Maryland Advanced Research Computing Center (MARCC) is gratefully acknowledged. Acknowledgements This work has been supported by a GOALI research program sponsored by the National Science Foundation, Mechanics and Structure of Materials Program through Grant No. CMMI-1100818 (Program Manager: Dr. Kara Peters). The authors gratefully acknowledge this support. They thank their GOALI partner General Motors R&D for their support of this research. Computing support by the Homewood High Performance Compute Cluster (HHPC) and Maryland Advanced Research Computing Center (MARCC) is gratefully acknowledged.

Keywords

Crystal plasticity finite element
Discrete twin formation
Magnesium

Access to Document

10.1007/978-3-319-52392-7_26

Cite this

Cheng, J., & Ghosh, S. (2017). Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model. In N. R. Neelameggham, A. Singh, K. N. Solanki, & D. Orlov (Eds.), Magnesium Technology 2017 (pp. 167-174). (Minerals, Metals and Materials Series; Vol. Part F8). Springer International Publishing. https://doi.org/10.1007/978-3-319-52392-7_26

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title = "Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model",

abstract = "An advanced, image-based crystal plasticity FE model is developed for predicting discrete twin formation and associated heterogeneous deformation in the single and polycrystalline microstructure of Magnesium. Twin formation is sensitive to the underlying microstructure and is responsible for the premature failure of Mg. The physics of nucleation, propagation, and growth of deformation-twins are considered in the CPFE formulation. The twin nucleation model is based on dissociation of sessile dislocations into stable twin loops, while propagation is assumed by layer-by-layer atoms shearing on twin planes and shuffling to reduce the energy barrier. A non-local FE-based computational framework is developed to implement the twin nucleation and propagation laws, which governs the explicit formation of each individual twin. The simulation matches satisfactorily with the experiments in the stress-strain-response and predicts heterogeneous twin formation with strain localization.",

keywords = "Crystal plasticity finite element, Discrete twin formation, Magnesium",

author = "Jiahao Cheng and Somnath Ghosh",

note = "Publisher Copyright: {\textcopyright} The Minerals, Metals \& Materials Society 2017.; International Symposium on Magnesium Technology, 2017 ; Conference date: 26-02-2017 Through 02-03-2017",

year = "2017",

doi = "10.1007/978-3-319-52392-7\_26",

language = "English",

isbn = "9783319523910",

series = "Minerals, Metals and Materials Series",

publisher = "Springer International Publishing",

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booktitle = "Magnesium Technology 2017",

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Cheng, J & Ghosh, S 2017, Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model. in NR Neelameggham, A Singh, KN Solanki & D Orlov (eds), Magnesium Technology 2017. Minerals, Metals and Materials Series, vol. Part F8, Springer International Publishing, pp. 167-174, International Symposium on Magnesium Technology, 2017, San Diego, United States, 02/26/17. https://doi.org/10.1007/978-3-319-52392-7_26

Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model. / Cheng, Jiahao; Ghosh, Somnath.
Magnesium Technology 2017. ed. / Neale R. Neelameggham; Alok Singh; Kiran N. Solanki; Dmytro Orlov. Springer International Publishing, 2017. p. 167-174 (Minerals, Metals and Materials Series; Vol. Part F8).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Ghosh, Somnath

N1 - Publisher Copyright: © The Minerals, Metals & Materials Society 2017.

PY - 2017

Y1 - 2017

N2 - An advanced, image-based crystal plasticity FE model is developed for predicting discrete twin formation and associated heterogeneous deformation in the single and polycrystalline microstructure of Magnesium. Twin formation is sensitive to the underlying microstructure and is responsible for the premature failure of Mg. The physics of nucleation, propagation, and growth of deformation-twins are considered in the CPFE formulation. The twin nucleation model is based on dissociation of sessile dislocations into stable twin loops, while propagation is assumed by layer-by-layer atoms shearing on twin planes and shuffling to reduce the energy barrier. A non-local FE-based computational framework is developed to implement the twin nucleation and propagation laws, which governs the explicit formation of each individual twin. The simulation matches satisfactorily with the experiments in the stress-strain-response and predicts heterogeneous twin formation with strain localization.

AB - An advanced, image-based crystal plasticity FE model is developed for predicting discrete twin formation and associated heterogeneous deformation in the single and polycrystalline microstructure of Magnesium. Twin formation is sensitive to the underlying microstructure and is responsible for the premature failure of Mg. The physics of nucleation, propagation, and growth of deformation-twins are considered in the CPFE formulation. The twin nucleation model is based on dissociation of sessile dislocations into stable twin loops, while propagation is assumed by layer-by-layer atoms shearing on twin planes and shuffling to reduce the energy barrier. A non-local FE-based computational framework is developed to implement the twin nucleation and propagation laws, which governs the explicit formation of each individual twin. The simulation matches satisfactorily with the experiments in the stress-strain-response and predicts heterogeneous twin formation with strain localization.

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Simulating discrete twin evolution in magnesium using a novel crystal plasticity finite element model

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