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3D Micromechanical Modeling of Failure and Damage Evolution in Dual Phase Steel Based on a Real 2D Microstructure

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Abstract

A plate of dual phase steel was produced from low carbon steel with intercritical annealing treatment. Its optically determined surface microstructure was utilized to construct three different microstructural models. To describe the ductile damage in the ferritic matrix, the Gurson-Tvergaard-Needleman model was used with the failure in the martensite phase being ignored. The numerical results obtained for the mechanism of void initiation and coalescence were compared with the experimental observations. The numerical results obtained from the randomly extruded 3D model showed a significantly better agreement with the experimental ones than those obtained from the 2D model or the uniformly extruded 3D model.

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Authors and Affiliations

  1. Fatigue and Fracture Lab., Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology, 16846, Narmak, Tehran, Iran

    M. R. Ayatollahi, A. Ch. Darabi, H. R. Chamani & J. Kadkhodapour

Authors
  1. M. R. Ayatollahi
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  2. A. Ch. Darabi
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  3. H. R. Chamani
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  4. J. Kadkhodapour
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Correspondence to M. R. Ayatollahi.

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Ayatollahi, M.R., Darabi, A.C., Chamani, H.R. et al. 3D Micromechanical Modeling of Failure and Damage Evolution in Dual Phase Steel Based on a Real 2D Microstructure. Acta Mech. Solida Sin. 29, 95–110 (2016). https://doi.org/10.1016/S0894-9166(16)60009-5

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  • DOI: https://doi.org/10.1016/S0894-9166(16)60009-5

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