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The Formation of Complex Microstructures After Different Deformation Modes in Advanced High-Strength Steels

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Abstract

The microstructure of transformation induced plasticity (TRIP) and dual phase (DP) multiphase steels after stamping of an industrial component at different strain levels was investigated using transmission electron microscopy. The TRIP steel microstructure showed a more complex dislocation substructure of ferrite at different strain levels than DP steel. The deformation microstructure of the stamped parts was compared to the deformation microstructure in these complex steels for different “equivalent” tensile strains. It was found that the microstructures are similar only at high levels of strain (>10 pct) for both steels.

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Acknowledgments

One of the authors (P.D.H.) acknowledges the support of the ARC Laureate Fellowship scheme.

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Authors and Affiliations

  1. Institute for Frontier Materials, Deakin University, Geelong, VIC, Australia

    Ilana Timokhina (Senior Research Academic) & Peter Hodgson (ARC Laureate Fellow, Alfred Deakin Professor, Director)

  2. UOW Electron Microscopy Center, Engineering Materials Institute,, University of Wollongong, Wollongong, NSW, Australia

    Elena Pereloma (Director)

Authors
  1. Ilana Timokhina
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  2. Elena Pereloma
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  3. Peter Hodgson
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Corresponding author

Correspondence to Ilana Timokhina.

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Manuscript submitted October 2, 2013.

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Timokhina, I., Pereloma, E. & Hodgson, P. The Formation of Complex Microstructures After Different Deformation Modes in Advanced High-Strength Steels. Metall Mater Trans A 45, 4247–4256 (2014). https://doi.org/10.1007/s11661-014-2376-0

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