|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||Tempering Reactions in Martensitic Stainless Steels Studied by Dilatometry and Correlative Magnetic Saturation Measurements
||Qiuliang Huang, Olena Volkova, Horst Biermann , Javad Mola
|On-Site Speaker (Planned)
The influence of Si and Mn addition on tempering reactions in a Fe–13Cr–0.47C martensitic stainless steel was studied by dilatometry and magnetic saturation measurements. For this purpose, apparent coefficient of thermal expansion (CTE) during continuous dilatometry heating was correlated with a novel method of studying tempering reactions based on the magnetic saturation measurement after each tempering step. The formation of paraequilibrium transition carbides and cementite in dilatometry was associated with a decrease in the apparent CTE. In magnetic saturation measurements, on the other hand, the formation of cementite had a demagnetizing effect. Both methods clearly confirmed the suppressing effect of Si on the cementite formation. Mn too weakly opposed the formation of cementite. Saturation magnetization of all steels increased gradually in the approximate temperature range of 400 °C-600 °C which was attributed to the partitioning of substitutional alloying elements between the martensitic matrix and the pre-existing precipitates.
||Planned: Supplemental Proceedings volume