|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||A Modified Quenching and Partitioning Process of Medium Mn Steel
||Ran Ding, Jie Su
|On-Site Speaker (Planned)
A modified quenching and partitioning process is performed on an Fe-0.2C-8Mn-2Al medium Mn steel. The final microstructure is significantly changed as compared with the conventional intercritical annealing process. The microstructure evolution and alloy partition behavior are studied by both experimental and simulation method. It is shown that the secondary martensite originates from the initial region of the preserved austenite due to insufficient Mn enrichment which is validated by the simulation and nano-scaled auger electron spectroscopy measurements. C contributed to the stabilization of austenite, leading to the enhanced fraction of retained austenite which is greater than preserved fraction. The ultimate strength is increased with suitable preservation of austenite, but further increasing the amount of preserved austenite significantly deteriorates the ductility.
||Planned: Supplemental Proceedings volume