Characterisation of microstructure and mechanical properties in two different nanostructured bainitic steels

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 featur...

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Bibliographic Details
Published inMaterials science and technology Vol. 31; no. 12; pp. 1508 - 1520
Main Authors Avishan, B., Yazdani, S., Caballero, F. G., Wang, T. S., Garcia-Mateo, C.
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 01.09.2015
SAGE Publications
Taylor & Francis Ltd
Subjects
Bainite
Bainitic steel
Manganese
Mechanical analysis
Mechanical properties
Microstructure
Nanostructure
Nanostructured bainite
Nanostructured materials
Nickel
SEM
Steel
Steels
TEM
XRD
Mechanical properties
SEM
XRD
Nanostructured bainite
TEM
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Summary: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.
Bibliography:ObjectType-Article-1
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ISSN:0267-0836
1743-2847
DOI:10.1179/1743284714Y.0000000745