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Title

DEVELOPMENT OF A HIGH TOUGHNESS BAINITE IN A 38MnV7 STEEL

AuthorsMedina, Sebastián F.; Rancel, Lucía; Gómez, Manuel; Calvo, J.; Boulajaaj, A.; Hernández, A.; Cabrera, J. M.
Issue Date28-Oct-2013
CitationMaterials Science and Technology (MS&T'13)
AbstractPrevious works have shown that high toughness can be obtained in medium carbon bainitic steel (38MnV7) after a careful control of the chemistry and heat thermal treatment. Charpy-V tests at room temperature provided 40J for the steel after an isothermal bainitic treatment. Further improvement in toughness was obtained by subsequent tempering reaching an absorbed energy value of 50J with a FATT of -40ºC. Present work is oriented to an optimization of the above chemical composition. To attain this purpose six different casting were prepared, ranging the chemical composition as follows %C: 0.35-0.46, %Mn: 1.33-1.84, %V: 0.066 0.14% and %Ti: 0.010-0.025. To appropriate design the thermomechanical cycle, precipitation curves, TTT curves (including the effect of the initial grain size, i.e. austenitization temperature , were determined for each steel
URIhttp://hdl.handle.net/10261/109679
Appears in Collections:(CENIM) Comunicaciones congresos
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