|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Phase Transformations, Boron Segregation, and the Metatectic Reaction in Boron-containing Steels
||Kara Luitjohan, Matthew J. M. Krane, Volkan Ortalan, David Johnson
|On-Site Speaker (Planned)
Adding small amounts of boron to steel increases the hardenability but makes the steel difficult to cast. These difficulties are predicted to stem from a metatectic reaction in the iron-boron system where delta-iron transforms to gamma-iron and liquid upon cooling. How other alloying elements affect this reaction is not well characterized. In this study, levitation zone melting is used to control the segregation of solute elements in various commercial boron-containing steel alloys. From the directionally solidified ingots, specific compositions are examined in a confocal scanning laser microscope which allows for in-situ observations of the phase transformations. These experimental results are then compared back to the predicted phase diagrams.
||Planned: Supplemental Proceedings volume