Characterisation of microstructure and mechanical properties in two different nanostructured bainitic steels |
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| Authors: | B. Avishan S. Yazdani F. G. Caballero T. S. Wang C. Garcia-Mateo |
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| Affiliation: | 1. Department of Materials EngineeringAzarbaijan Shahid Madani University, Tabriz, Iran;2. Faculty of Materials EngineeringSahand University of Technology, Tabriz, Iran;3. MATERALIA Research GroupDepartment of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Madrid, Spain;4. State Key Laboratory of Metastable Materials Science and TechnologyYanshan University, Qinhuangdao 066004, China |
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| Abstract: | Recently, valuable combinations of mechanical properties with strength of 1.9 GPa accompanied by very decent ductility of 19% and toughness of 31 J, have been achieved in a set of nanostructured bainitic steels. However, it is necessary to elucidate the significance of various microstructural features responsible of that extraordinary mechanical response in more detail. Thus, using two steels, with different Mn, Ni and V contents, and changing the nanostructured bainite isothermal transformation temperatures (200–300°C), has led to a plethora of subtle and essential microstructural variations, necessary to explain how the mechanical response of nanostructured bainite is attained. |
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| Keywords: | Nanostructured bainite Mechanical properties TEM XRD SEM |
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