Microstructure and Phase Selection of Undercooled Single-Phase Fe-Co Alloy
Fe-Co single-phase alloy melts with different Co contents were undercooled using fluxing method. The maximum undercooling DT = 457K (relative undercooling DT/Tm=0.259) was achieved in this work. At low undercooling (DT), single-phased microstructure was observed, but metastable bcc phase emerged in the as-solidified microstructure once DT exceeded a critical value, DTcrit. In the presence of classical nucleation theory, phase selection in the undercooled Fe-Co melt was investigated, and the theoretical calculation was coincided with the experimental result.
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
N. Liu et al., "Microstructure and Phase Selection of Undercooled Single-Phase Fe-Co Alloy", Advanced Materials Research, Vols. 154-155, pp. 1624-1628, 2011