Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths

Cheng, G.; Choi, K. S.; Hu, X.; Sun, X.

doi:10.1007/s11837-017-2333-7

Title: Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths

Abstract

Here in this study, the deformation limits of various DP980 steels are examined with the deformation instability theory. Under uniaxial tension, overall stress–strain curves of the material are estimated based on a simple rule of mixture (ROM) with both iso-strain and iso-stress assumptions. Under complex loading paths, an actual microstructure-based finite element (FE) method is used to resolve the deformation compatibilities explicitly between the soft ferrite and hard martensite phases. The results show that, for uniaxial tension, the deformation instability theory with iso-strain-based ROM can be used to provide the lower bound estimate of the uniform elongation (UE) for the various DP980 considered. Under complex loading paths, the deformation instability theory with microstructure-based FE method can be used in examining the effects of various microstructural features on the deformation limits of DP980 steels.

Authors:

Cheng, G. ^[1]; Choi, K. S. ^[1]; Hu, X. ^[1]; Sun, X. ^[1]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Publication Date:: Wed Apr 05 00:00:00 EDT 2017

Research Org.:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)

OSTI Identifier:: 1357065

Report Number(s):: PNNL-SA-122713
Journal ID: ISSN 1047-4838; PII: 2333

Grant/Contract Number:: EE0005976; AC05-76RL01830

Resource Type:: Accepted Manuscript

Journal Name:: JOM. Journal of the Minerals, Metals & Materials Society

Additional Journal Information:: Journal Volume: 69; Journal Issue: 6; Journal ID: ISSN 1047-4838

Publisher:: Springer

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Cheng, G., Choi, K. S., Hu, X., and Sun, X. Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths.  United States: N. p., 2017. 
Web.  doi:10.1007/s11837-017-2333-7.

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                    Cheng, G., Choi, K. S., Hu, X., & Sun, X. Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths.  United States.  https://doi.org/10.1007/s11837-017-2333-7

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                    Cheng, G., Choi, K. S., Hu, X., and Sun, X. Wed .  
"Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths".  United States.  https://doi.org/10.1007/s11837-017-2333-7.  https://www.osti.gov/servlets/purl/1357065.

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@article{osti_1357065,

  title        = {Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths},

  author       = {Cheng, G. and Choi, K. S. and Hu, X. and Sun, X.},

  abstractNote = {Here in this study, the deformation limits of various DP980 steels are examined with the deformation instability theory. Under uniaxial tension, overall stress–strain curves of the material are estimated based on a simple rule of mixture (ROM) with both iso-strain and iso-stress assumptions. Under complex loading paths, an actual microstructure-based finite element (FE) method is used to resolve the deformation compatibilities explicitly between the soft ferrite and hard martensite phases. The results show that, for uniaxial tension, the deformation instability theory with iso-strain-based ROM can be used to provide the lower bound estimate of the uniform elongation (UE) for the various DP980 considered. Under complex loading paths, the deformation instability theory with microstructure-based FE method can be used in examining the effects of various microstructural features on the deformation limits of DP980 steels.},

  doi          = {10.1007/s11837-017-2333-7},

  journal      = {JOM. Journal of the Minerals, Metals & Materials Society},

  number       = 6,

  volume       = 69,

  place        = {United States},

  year         = {Wed Apr 05 00:00:00 EDT 2017},

  month        = {Wed Apr 05 00:00:00 EDT 2017}

}

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Works referenced in this record:

Quantifying Grain Level Stress-Strain Behavior for AM40 via Instrumented Microindentation
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Influence of Martensite Mechanical Properties on Failure Mode and Ductility of Dual-Phase Steels
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Choi, K. S.; Liu, W. N.; Sun, X.
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Deformation response of ferrite and martensite in a dual-phase steel
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Forming limit stresses predicted by phenomenological plasticity theories with anisotropic work-hardening behavior
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Works referencing / citing this record:

Effects of Bi Addition on the Microstructure and Mechanical Properties of Nanocrystalline Ag Coatings
journal, August 2017

Wang, Yuxin; Cheng, Guang; Tay, See Leng
Materials, Vol. 10, Issue 8
DOI: 10.3390/ma10080932

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Title: Predicting Deformation Limits of Dual-Phase Steels Under Complex Loading Paths

Abstract

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