|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels IV
||J-6: The effect of alloy elements on the peritectic range of Fe-C-Mn-Si steels
||Qing-Qiang Ren, Tao Liu, Sung Il Baik, Zugang Mao, Bruce Krakauer, David Seidman
|On-Site Speaker (Planned)
The occurrence of peritectic reaction remains a big challenge in the modern production of widely applied Fe-C-Mn-Si steels, hence it is of vital importance to determine the peritectic range to avoid such reactions. However, the effect of alloy elements on the peritectic range is not clear especially for steel composition designs in a large compositional space. Herein, we studied the effect of alloy elements on the peritectic range in the common composition ranges of Fe-C-Mn-Si steels by a combination of experimental measurements and thermodynamic modelling. The phase transition sequences and temperatures at high-temperature range of two model Fe-C-Mn-Si steels are experimentally investigated by differential scanning calorimetry (DSC) and high-temperature confocal laser scanning microscope (HTCLSM), the results of which are in good agreement with the thermodynamic modelling by Thermo-Calc and the TCFE9 databases. The database is then utilized to calculate 1680 phase diagrams for the information of peritectic ranges to explore the common composition ranges. The contour plots of the results reveal the complex interactions rather than single-element effect of Mn, Si, and Ti on the peritectic ranges. Regression equations are also derived based on the thermodynamic modelling, and these equations are utilized to establish links with casting practices.
||Planned: Supplemental Proceedings volume