Characterization and modeling of {101¯2} twin banding in magnesium

Yub Raj Paudel; Joseph Indeck; Kavan Hazeli; Matthew W. Priddy; Kaan Inal; Hongjoo Rhee; Christopher D. Barrett; Wilburn R. Whittington; Krista R. Limmer; Haitham El Kadiri

doi:10.1016/j.actamat.2019.11.020

Characterization and modeling of {101¯2} twin banding in magnesium

Yub Raj Paudel, Joseph Indeck, Kavan Hazeli, Matthew W. Priddy, Kaan Inal, Hongjoo Rhee, Christopher D. Barrett, Wilburn R. Whittington, Krista R. Limmer, Haitham El Kadiri

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

27 Scopus citations

Abstract

We experimentally and numerically examined the localization behavior of {101¯2} extension twins in strongly and weakly textured AZ31 and ZEK100 magnesium alloys as they depart from the surface toward the center of the sheet under the mechanical action of three-point bending. Strain measurement analysis using digital image correlation revealed that twin banding occurs only in the sharply textured AZ31, but with a characteristic spacing between the bands which decreases with the twin height and applied strain. ZEK100 did not exhibit any ordered localization of bands and behaved as a “true” polycrystal. This finding is in agreement with micromechanical calculations by the present authors. We show that full-field plasticity finite element crystal plasticity model was unable to capture many important 2D features of the twin banding. This suggest that twin shear transfer, non-local effects, and the third dimension effects should be included into this model.

Original language	English (US)
Pages (from-to)	438-451
Number of pages	14
Journal	Acta Materialia
Volume	183
DOIs	https://doi.org/10.1016/j.actamat.2019.11.020
State	Published - Jan 15 2020
Externally published	Yes

Keywords

CPFEM
HCP
Magnesium alloy
Twin bands
Twinning

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2019.11.020

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title = "Characterization and modeling of {101¯2} twin banding in magnesium",

abstract = "We experimentally and numerically examined the localization behavior of {101¯2} extension twins in strongly and weakly textured AZ31 and ZEK100 magnesium alloys as they depart from the surface toward the center of the sheet under the mechanical action of three-point bending. Strain measurement analysis using digital image correlation revealed that twin banding occurs only in the sharply textured AZ31, but with a characteristic spacing between the bands which decreases with the twin height and applied strain. ZEK100 did not exhibit any ordered localization of bands and behaved as a “true” polycrystal. This finding is in agreement with micromechanical calculations by the present authors. We show that full-field plasticity finite element crystal plasticity model was unable to capture many important 2D features of the twin banding. This suggest that twin shear transfer, non-local effects, and the third dimension effects should be included into this model.",

keywords = "CPFEM, HCP, Magnesium alloy, Twin bands, Twinning",

author = "Paudel, {Yub Raj} and Joseph Indeck and Kavan Hazeli and Priddy, {Matthew W.} and Kaan Inal and Hongjoo Rhee and Barrett, {Christopher D.} and Whittington, {Wilburn R.} and Limmer, {Krista R.} and {El Kadiri}, Haitham",

note = "Funding Information: Research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-15-2-0025. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Laboratory or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein. Publisher Copyright: {\textcopyright} 2019 Acta Materialia Inc.",

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day = "15",

doi = "10.1016/j.actamat.2019.11.020",

language = "English (US)",

volume = "183",

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T1 - Characterization and modeling of {101¯2} twin banding in magnesium

AU - Paudel, Yub Raj

AU - Indeck, Joseph

AU - Hazeli, Kavan

AU - Priddy, Matthew W.

AU - Inal, Kaan

AU - Rhee, Hongjoo

AU - Barrett, Christopher D.

AU - Whittington, Wilburn R.

AU - Limmer, Krista R.

AU - El Kadiri, Haitham

N1 - Funding Information: Research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-15-2-0025. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Laboratory or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein. Publisher Copyright: © 2019 Acta Materialia Inc.

PY - 2020/1/15

Y1 - 2020/1/15

N2 - We experimentally and numerically examined the localization behavior of {101¯2} extension twins in strongly and weakly textured AZ31 and ZEK100 magnesium alloys as they depart from the surface toward the center of the sheet under the mechanical action of three-point bending. Strain measurement analysis using digital image correlation revealed that twin banding occurs only in the sharply textured AZ31, but with a characteristic spacing between the bands which decreases with the twin height and applied strain. ZEK100 did not exhibit any ordered localization of bands and behaved as a “true” polycrystal. This finding is in agreement with micromechanical calculations by the present authors. We show that full-field plasticity finite element crystal plasticity model was unable to capture many important 2D features of the twin banding. This suggest that twin shear transfer, non-local effects, and the third dimension effects should be included into this model.

AB - We experimentally and numerically examined the localization behavior of {101¯2} extension twins in strongly and weakly textured AZ31 and ZEK100 magnesium alloys as they depart from the surface toward the center of the sheet under the mechanical action of three-point bending. Strain measurement analysis using digital image correlation revealed that twin banding occurs only in the sharply textured AZ31, but with a characteristic spacing between the bands which decreases with the twin height and applied strain. ZEK100 did not exhibit any ordered localization of bands and behaved as a “true” polycrystal. This finding is in agreement with micromechanical calculations by the present authors. We show that full-field plasticity finite element crystal plasticity model was unable to capture many important 2D features of the twin banding. This suggest that twin shear transfer, non-local effects, and the third dimension effects should be included into this model.

KW - CPFEM

KW - HCP

KW - Magnesium alloy

KW - Twin bands

KW - Twinning

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Characterization and modeling of {101¯2} twin banding in magnesium

Abstract

Keywords

ASJC Scopus subject areas

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