J. Phys. IV France
Volume 05, Numéro C8, Décembre 1995
International Conference on Martensitic Transformations – ICOMAT 95
Page(s) C8-61 - C8-70
International Conference on Martensitic Transformations

J. Phys. IV France 05 (1995) C8-61-C8-70

DOI: 10.1051/jp4:1995807

Some Aspects of Bainite Transformation in Fe-Based Alloys

K. Tsuzaki and T. Maki

Department of Materials Science and Engineering, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-01, Japan

The mechanism of the bainite transformation in carbon containing steels was discussed after presenting our recent experimental results ; (1) the bainite transformation has its own C-curve, (2) incomplete phenomenon is a general feature of the bainite transformation, (3) bainitic ferrite grows to a limited size, and (4) bainitic ferrite is highly supersaturated with respect to carbon. It was examined what kinds of interphase boundary structures and carbon concentration gradients in the vicinity of the transformation interface are possible to explain the experimental results. It was concluded that the bainite transformation should be regarded as the transformation that occurs by the movement of a glissile interphase boundary and requires diffusion of interstitial carbon atoms at least to a certain extent in the nucleation and growth stages.

© EDP Sciences 1995