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Ultra-high–strength Bainitic Steels

AuthorsGarcía Mateo, Carlos; García Caballero, Francisca
KeywordsCarbon content
Mechanical properties
Plate thickness
Dislocation density
Issue Date2005
PublisherIron and Steel Institute of Japan
CitationISIJ International, Vol. 45 (2005), No. 11, pp. 1736–1740
AbstractNovel bainitic microstructures, consisting of slender ferrite plates (tens of nm) in a matrix of retained austenite, have reported maximum yield strength of 1.4 GPa, ultimate tensile strength of 2.2 GPa, 30% ductility and respectable levels of fracture toughness (∼51 MPa m0.5). The unusual combination of properties is attributed to the fine bainitic plates and the presence of retained austenite in the microstructure.
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