Abstract

In order to clarify the mechanism of bainite reaction, a metallographic study of isothermal-transformation products formed at various temperatures was made in Fe-9% Ni-0.08% C, -0.23% C, and -0.28% C alloys (mass%) where the solute drag-like effect does not occur. TTT diagrams were also examined. In all the alloys, the TTT diagram consists of two C-curves. The kinetic-B s temperature is observed at 760 K in both of the 0.23 and 0.28% C alloys. In the 0.08% C alloy, the kinetic-B, is not seen, but a «bay» appears around 750 K

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