Abstract
Fe-C-Mn-Al alloys are promising materials to respond to the new European regulations on car CO2 emissions. The austenite growth kinetics for a mid-Mn, mid-Al alloy have been investigated by DICTRA calculations. Our results establish that Al only affects the thermodynamic properties of the system, its diffusivity does not influence the kinetics. Calculations for several heating temperatures have shown that the austenite fraction is a direct function of the final martensite fraction, for austenite fraction above 40%.
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