Austenite Decomposition in Fe-C-Si-Mn Steel under 30 Tesla Magnetic Field

R. A. Jaramillo, S. S. Babu, M. K. Miller, G. M. Ludtka, G. Mackiewicz-Ludtka, R. A. Kisner, J. B. Wilgen and H. K. D. H. Bhadeshia

Abstract

The continuous cooling transformation characteristics of novel bainitic steels have been studied, both under ordinary conditions and whilst subjected to a 30 T magnetic field. The magnetic field has been found to completely change the microstructure obtained, from a mixture of bainite and martensite to one containing an incredibly fine pearlite with an interlamellar spacing of about 50 nm. As a consequence, the pearlite is found to be much harder than any data found in the published literature. The focus of this paper is on the partitioning of solutes during pearlite formation, and on the tendency to form pearlite with and without the magnetic field.

Solid→Solid Phase Transformations in Inorganic Materials, edited by J. M. Howe, D. E. Laughlin, J. K. Lee, U. Dahmen and W. A. Soffa, 2005, Volume 1, pages 873--878.

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