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Measurements of anisotropic yielding, bauschinger and transient behavior of automotive dual-phase steel sheets

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Abstract

In order to present better prediction capability in computational analysis, mechanical properties of the dualphase high strength steel have been characterized especially for anisotropy as well as the Bauschinger and transient behavior. As for the anisotropy, the non-quadratic anisotropic yield function Yld2000-2d has been utilized and its material parameters have been obtained using the uni-axial tension tests as well as the hydraulic bulge test. To measure the hardening behavior including the Bauschinger and transient behavior, a newly developed test method has been applied for the uni-axial tension/compression and compression/tension tests, in which solid blocks along the both sides of the sheet specimen prevent buckling. From the tension/compression curves, the equations to describe isotropic and kinematic hardening behavior have been obtained. The modified Chaboche model has been confirmed to well represent the hardening behavior including the Bauschinger and transient behavior.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Seoul National University, 56-1 Sillim 9-dong, Gwanak-gu, 151-742, Seoul, Korea

    Daeyong Kim, Myoung-Gyu Lee, Kwansoo Chung, Jae Ryoun Youn & Tae Jin Kang

  2. Materials & Processes Laboratory, R & D Center & NAO Planning, General Motors, 48090-9055, Warren, MI, U.S.A.

    Chongmin Kim

  3. Manufacturing Systems Research Laboratory, R & D Center & NAO Planning, General Motors, 43210-1178, Columbus, OH, U.S.A.

    Michael L. Wenner

  4. Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, 43210-1178, Columbus, OH, U.S.A.

    Robert H. Wagoner

  5. Material Science Division, Alcoa Technical Center, 100 Technical Drive, 15069-0001, Alcoa Center, PA, U.S.A.

    Frederic Barlat

  6. Research Institute of Advanced Materials, Seoul National University, Seoul, Korea

    Kwansoo Chung

Authors
  1. Daeyong Kim
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  2. Myoung-Gyu Lee
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  3. Chongmin Kim
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  4. Michael L. Wenner
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  5. Robert H. Wagoner
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  6. Frederic Barlat
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  7. Kwansoo Chung
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  8. Jae Ryoun Youn
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  9. Tae Jin Kang
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Corresponding author

Correspondence to Kwansoo Chung.

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Kim, D., Lee, MG., Kim, C. et al. Measurements of anisotropic yielding, bauschinger and transient behavior of automotive dual-phase steel sheets. Met. Mater. Int. 9, 561–570 (2003). https://doi.org/10.1007/BF03027256

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  • DOI: https://doi.org/10.1007/BF03027256

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