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Tailoring the fraction and stability of retained austenite in the medium manganese steel has always been an issue of great industrial interest. A novel cyclic austenite reversion treatment (ART) is proposed to obtain considerable amount of retained austenite in a Fe-0.21C-4.53Mn (wt%) steel, and it is found to be more efficient by comparison with the conventional ART. Transformation kinetics, alloying...
The effect of multi-step ausforming with small strain per pass (<10%) on the overall transformation kinetics, microstructures and tensile properties of a high carbon, silicon rich nanobainite steel was investigated. Nanobainite steel with bainite ferrite lath thickness of ∼50nm, ultimate tensile strength of 2154MPa and total elongation of 14% has been produced by being isothermally treated at 300°C...
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