Cg. De Andres et al., Effect of molybdenum on continuous cooling transformations in two medium carbon forging steels, J MATER SCI, 36(3), 2001, pp. 565-571
Continuous cooling transformations in two medium carbon microalloyed forgin
g steels have been studied. The influence of austenite grain size and molyb
denum content on diffusion-controlled transformations and displacive transf
ormations has been thoroughly analyzed. Moreover, a study of the austenite
grain structure previous to the transformation has been carried out. In thi
s sense, the evolution of austenite grain size with austenitization tempera
ture has been experimentally analyzed. That allowed to detect the temperatu
re at which an undesirable microstructure with a duplex grain morphology st
arts to form. Finally, continuous cooling conditions to reach a final micro
structure formed mainly of acicular ferrite in industrial forging processes
has been determined. (C) 2001 Kluwer Academic Publishers.