|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations in Multi-component Systems: An MPMD Symposium Honoring Gary R. Purdy
||In-situ Observation of Austenite Growth in Very Low Carbon Fe-Ni and Mn Alloys
||Masato Enomoto, Xianliang Wan
|On-Site Speaker (Planned)
The austenite formation was observed in-situ under confocal scanning laser microscopy (CSLM) in very low carbon Fe-2Mn, 2Ni and 5Ni alloys. Nucleation began to occur above the T0 temperature and lasted above the Ae3 line. The growth rates observed above the Ae3 line were one or two orders of magnitude greater than those below and near the paraequilibrium and full equilibrium Ae3 line. From comparison with simulation the slower growth below Ae3 is likely to be controlled by carbon diffusion in ferrite or austenite while the faster growth is interface-controlled. The α/γ interface mobility evaluated above Ae3 was smaller than that proposed by Hillert, and was a similar order of magnitude to that evaluated previously from the α/γ interface migration during cooling.
||Planned: A print-only volume