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Ultra-high-strength Bainitic Steels

2005; The Iron and Steel Institute of Japan; Volume: 45; Issue: 11 Linguagem: Inglês

10.2355/isijinternational.45.1736

1347-5460

Carlos García-Mateo, Francisca G. Caballero,

Hydrogen embrittlement and corrosion behaviors in metals

Novel 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.