Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements

Bong, Hyuk Jong; Lee, Jinwoo; Hu, Xiaohua; Sun, Xin; Lee, Myoung-Gyu

doi:10.1016/j.ijplas.2019.11.009

Title: Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements

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Abstract

The crystal plasticity finite element (CPFE) method was used to predict forming limit strains of hexagonal close-packed (HCP) polycrystalline magnesium alloy sheets, namely AZ31 and ZE10, under an isothermal temperature condition. The strain rate-dependent uniaxial tensile test data along various loading directions and an initial texture were used to determine the constitutive parameters of the crystal plasticity model. A hybrid representative volume element approach, which combines the CPFE and the Marciniak–Kuczynski model, was developed to obtain the forming limit diagram of the magnesium alloys. The predicted forming limits were in excellent agreement with the Nakazima test results. Moreover, the microscopic responses such as slip/twin activation and deformation texture changes during various loading paths from uniaxial tension to the balanced biaxial tension were comprehensively analyzed and discussed from the CPFE results to understand the underlying micro-mechanism for the macro-mechanical responses.

Authors:

Bong, Hyuk Jong ^[1]; Lee, Jinwoo ^[1]; Hu, Xiaohua ^[2]; Sun, Xin ^[2]; Lee, Myoung-Gyu ^[3]

Korea Inst. of Materials Science (South Korea)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Seoul National Univ. (South Korea)

Publication Date:: 2019-11-27

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1606977

Alternate Identifier(s):: OSTI ID: 1702777

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Plasticity

Additional Journal Information:: Journal Volume: 126; Journal Issue: C; Journal ID: ISSN 0749-6419

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Forming limit diagram; Crystal plasticity; Magnesium alloys; Nakazima test; Finite element simulation

Citation Formats


                    Bong, Hyuk Jong, Lee, Jinwoo, Hu, Xiaohua, Sun, Xin, and Lee, Myoung-Gyu. Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements.  United States: N. p., 2019. 
Web.  https://doi.org/10.1016/j.ijplas.2019.11.009.

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                    Bong, Hyuk Jong, Lee, Jinwoo, Hu, Xiaohua, Sun, Xin, & Lee, Myoung-Gyu. Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements.  United States.  https://doi.org/10.1016/j.ijplas.2019.11.009

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                    Bong, Hyuk Jong, Lee, Jinwoo, Hu, Xiaohua, Sun, Xin, and Lee, Myoung-Gyu. Wed .  
"Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements".  United States.  https://doi.org/10.1016/j.ijplas.2019.11.009.  https://www.osti.gov/servlets/purl/1606977.

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@article{osti_1606977,

  title        = {Predicting forming limit diagrams for magnesium alloys using crystal plasticity finite elements},

  author       = {Bong, Hyuk Jong and Lee, Jinwoo and Hu, Xiaohua and Sun, Xin and Lee, Myoung-Gyu},

  abstractNote = {The crystal plasticity finite element (CPFE) method was used to predict forming limit strains of hexagonal close-packed (HCP) polycrystalline magnesium alloy sheets, namely AZ31 and ZE10, under an isothermal temperature condition. The strain rate-dependent uniaxial tensile test data along various loading directions and an initial texture were used to determine the constitutive parameters of the crystal plasticity model. A hybrid representative volume element approach, which combines the CPFE and the Marciniak–Kuczynski model, was developed to obtain the forming limit diagram of the magnesium alloys. The predicted forming limits were in excellent agreement with the Nakazima test results. Moreover, the microscopic responses such as slip/twin activation and deformation texture changes during various loading paths from uniaxial tension to the balanced biaxial tension were comprehensively analyzed and discussed from the CPFE results to understand the underlying micro-mechanism for the macro-mechanical responses.},

  doi          = {10.1016/j.ijplas.2019.11.009},

  journal      = {International Journal of Plasticity},

  number       = C,

  volume       = 126,

  place        = {United States},

  year         = {2019},

  month        = {11}

}

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