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Strengthening and mechanical stability mechanisms in nanostructured bainite

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Abstract

Understanding the main relationships between the microstructure parameters controlling the strength and ductility of low temperature bainitic microstructures is of considerable importance for further development of these grades. Although the microstructure essentially consists of solely two phases, bainitic ferrite and retained austenite, the complexity of the different microstructural characteristics, the natural consequence of its unique transformation mechanisms, might not provide with one unique answer, but a set of several parameters interdependent among them. This paper will deal with some of these relationships’ microstructure properties, strength, and ductility, with special emphasis in the mechanical stability (TRIP effect) of retained austenite.

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Acknowledgements

The authors acknowledge E. Urones-Garrote from the Centro de Microscopia y Citometria (UCM) for assistance with the TEM. C. Garcia-Mateo and F.G. Caballero would like to thank the Spanish Ministry of Economy and Competitiveness Plan Nacional de I + D+I (2008-2011) for supporting their research under the auspices of the National Project MAT2010-15330. L. Morales-Rivas also acknowledges the same Ministry for financial support in the form of a PhD Research Grant (FPI). Behzad Avishan acknowledges the Iranian Science Ministry for the provision of a Grant for a short-term stay in CENIM.

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Authors and Affiliations

  1. Faculty of Materials Engineering, Sahand University of Technology, Tabriz, Iran

    Behzad Avishan & Sasan Yazdani

  2. MATERALIA Research Group, Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio Del Amo, 8, 28040, Madrid, Spain

    Carlos Garcia-Mateo, Lucia Morales-Rivas & Francisca G. Caballero

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  1. Behzad Avishan
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  2. Carlos Garcia-Mateo
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  3. Lucia Morales-Rivas
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  4. Sasan Yazdani
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  5. Francisca G. Caballero
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Correspondence to Carlos Garcia-Mateo.

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Avishan, B., Garcia-Mateo, C., Morales-Rivas, L. et al. Strengthening and mechanical stability mechanisms in nanostructured bainite. J Mater Sci 48, 6121–6132 (2013). https://doi.org/10.1007/s10853-013-7408-4

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