J. Phys. Colloques
Volume 49, Number C6, Novembre 198835th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
|Page(s)||C6-293 - C6-298|
J. Phys. Colloques 49 (1988) C6-293-C6-298
MICROSTRUCTURE OF GRANULAR BAINITEB. JOSEFSSON et H.-O. ANDRÉN
Department of Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden
A 2.25Cr - 1Mo - 0.1C welded steel having a microstructure described as "granular bainite" has been investigated using optical microscopy, electron microscopy and atom probe field ion microscopy. Granular bainite was found to consist of bainitic ferrite and retained austenite, but no cementite. Grains of ferrite are built up by parallel platelike subgrains - bainitic ferrite. The carbon concentration changes abruptly at the ferrite - retained austenite interface but no diffusion of substitutionals could be detected.