Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment

Bong, Hyuk Jong; Hu, Xiaohua; Sun, Xin; Ren, Yang

doi:10.1016/j.ijplas.2018.09.005

Title: Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment

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Abstract

The constitutive behavior of a hexagonal close-packed (HCP) polycrystalline ZEK100 magnesium alloy was investigated using combined high energy X-ray diffraction (HEXRD) from a synchrotron source and crystal plasticity modeling approach. The in-situ tensile test data coupled with the HEXRD enabled the tracking of the lattice strain evolution during deformation. The microscopic behavior represented by lattice strain and the macroscopic behavior represented by stress-strain curves were then used together as objective function to estimate the critical resolved shear stress (CRSS) and hardening parameters of available slip and deformation twin systems in the ZEK100 alloy. An enhanced predominant twinning reorientation (ePTR) scheme was proposed in the current work, and the ePTR parameters were determined for the first time by the use of basal plane peak intensity along loading direction measured from HEXRD. Two crystal plasticity models, the computationally efficient elastic-plastic self-consistent (EPSC) and crystal plasticity finite element (CPFE) models, were developed incorporating the deformation twinning for the HCP-structured metals. The determined constitutive parameters were further validated by comparing the predicted deformation texture with the measured one. The work provides a useful and computationally-efficient modeling scheme to understand the slip/twin induced deformation behaviors of the ZEK100 alloy in micro- and macro-scales.

Authors:

Bong, Hyuk Jong ^[1]; Hu, Xiaohua ^[2]; Sun, Xin ^[2]; Ren, Yang ^[3]

Korea Inst. of Materials Science, Changwon (Korea, Republic of). Advanced Metals Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy & Transportation Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division

Publication Date:: Sat Sep 15 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Korea Inst. of Materials Science, Changwon (Korea, Republic of)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); Korea Inst. of Materials Science (Korea, Republic of); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

OSTI Identifier:: 1491300

Alternate Identifier(s):: OSTI ID: 1504463; OSTI ID: 1636857

Grant/Contract Number:: AC05-00OR22725; AC02-06CH11357; EE0007756; PNK5650

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Plasticity

Additional Journal Information:: Journal Volume: 113; Journal ID: ISSN 0749-6419

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; crystal plasticity finite element; elastic-plastic self-consistent model; deformation twin; magnesium alloy; high-energy X-ray diffraction

Citation Formats


                    Bong, Hyuk Jong, Hu, Xiaohua, Sun, Xin, and Ren, Yang. Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment.  United States: N. p., 2018. 
Web.  doi:10.1016/j.ijplas.2018.09.005.

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                    Bong, Hyuk Jong, Hu, Xiaohua, Sun, Xin, & Ren, Yang. Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment.  United States.  https://doi.org/10.1016/j.ijplas.2018.09.005

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                    Bong, Hyuk Jong, Hu, Xiaohua, Sun, Xin, and Ren, Yang. Sat .  
"Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment".  United States.  https://doi.org/10.1016/j.ijplas.2018.09.005.  https://www.osti.gov/servlets/purl/1491300.

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@article{osti_1491300,

  title        = {Mechanism-based constitutive modeling of ZEK100 magnesium alloy with crystal plasticity and in-situ HEXRD experiment},

  author       = {Bong, Hyuk Jong and Hu, Xiaohua and Sun, Xin and Ren, Yang},

  abstractNote = {The constitutive behavior of a hexagonal close-packed (HCP) polycrystalline ZEK100 magnesium alloy was investigated using combined high energy X-ray diffraction (HEXRD) from a synchrotron source and crystal plasticity modeling approach. The in-situ tensile test data coupled with the HEXRD enabled the tracking of the lattice strain evolution during deformation. The microscopic behavior represented by lattice strain and the macroscopic behavior represented by stress-strain curves were then used together as objective function to estimate the critical resolved shear stress (CRSS) and hardening parameters of available slip and deformation twin systems in the ZEK100 alloy. An enhanced predominant twinning reorientation (ePTR) scheme was proposed in the current work, and the ePTR parameters were determined for the first time by the use of basal plane peak intensity along loading direction measured from HEXRD. Two crystal plasticity models, the computationally efficient elastic-plastic self-consistent (EPSC) and crystal plasticity finite element (CPFE) models, were developed incorporating the deformation twinning for the HCP-structured metals. The determined constitutive parameters were further validated by comparing the predicted deformation texture with the measured one. The work provides a useful and computationally-efficient modeling scheme to understand the slip/twin induced deformation behaviors of the ZEK100 alloy in micro- and macro-scales.},

  doi          = {10.1016/j.ijplas.2018.09.005},

  journal      = {International Journal of Plasticity},

  number       = ,

  volume       = 113,

  place        = {United States},

  year         = {Sat Sep 15 00:00:00 EDT 2018},

  month        = {Sat Sep 15 00:00:00 EDT 2018}

}

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